#linuxcnc Logs
Aug 10 2017
#linuxcnc Calendar
12:35 AM Zebs: Phipliv: Here?
12:41 AM Zebs: Anyone used Chilipeppr?
01:16 AM cncnoob: Spent all night researching on AliExpress to see what equipment was the best deal. Finally go to make my purchase and it is blocked till they can verify my account. They want a copy of your drivers license, credit card, and credit card statement. I have never heard of anything so ridiculous for an online store.
01:17 AM archivist: sounds like a scam
01:17 AM cncnoob: I would have thought so if it weren't such a reputable site
01:19 AM archivist: things get "added" in adverts etc
01:19 AM CaptHindsight: that sounds far and above what aliexpress asks for
01:21 AM CaptHindsight: cncnoob: what krap were you looking to buy? :)
01:24 AM CaptHindsight: what max temp should a roller chain drive be good to? 300-400C?
01:26 AM CaptHindsight: http://chain-guide.com/basics/5-1-1-steel-chains-high-temperatures.html
01:38 AM Zebs: Silly thing.
01:40 AM IchGucksLive: morning from germany
01:41 AM cncnoob: CaptHindsight a high speed spindle
01:42 AM cncnoob: https://www.aliexpress.com/item/2-2kw-spindle-kit-220v-380V-80mm-2200w-CNC-milling-spindle-motor-2-2kw-inverter-80mm/32720250683.html
01:42 AM cncnoob: and an extra mount
01:42 AM cncnoob: https://www.aliexpress.com/item/80-mm-spindle-clamps-bracket-carving-machine-clamp-motor-lathe-chuck-match-use-80mm-1-5KW/2053326885.html
01:42 AM cncnoob: both from the same seller, both shipping from the US to the US
01:43 AM CaptHindsight: cncnoob: so you're in the USA?!
01:43 AM cncnoob: You caught me
01:43 AM CaptHindsight: find another seller
01:43 AM cncnoob: why
01:43 AM IchGucksLive: good price for the set
01:43 AM cncnoob: I thought so too
01:43 AM CaptHindsight: just post your personal info online and give them the link :)
01:43 AM cncnoob: I spend all night reading reviews from like all the sellers
01:44 AM IchGucksLive: cncnoob: please keep in mind that MIN Rpm is 8k
01:44 AM CaptHindsight: you're paying with a credit card, so no other info is needed
01:44 AM cncnoob: That is what they say, but talking with some folks on here they say the can run it lower, but torque suffers
01:44 AM cncnoob: CaptHindsight exactly
01:44 AM cncnoob: it isn't their problem if the credit card is stolen
01:45 AM cncnoob: Credit card companies handle that
01:45 AM Zebs: Good morning.
01:45 AM cncnoob: I took pics of everything they asked for and put black boxes over almost everything
01:45 AM IchGucksLive: Zebs: ;-)
01:45 AM cncnoob: They will probably kick it back
01:46 AM cncnoob: IchGucksLive do you have experience with a VFD driven spindle like the one I linked to?
01:46 AM cncnoob: guess not
01:47 AM CaptHindsight: I's ask them foe the same
01:47 AM cncnoob: lol
01:47 AM CaptHindsight: that should get rid of them
01:47 AM IchGucksLive: cncnoob: i got more then 10 of them runing
01:48 AM CaptHindsight: plus you want them to use one of those counterfeit money checking markers on all your stuff just to be safe
01:48 AM IchGucksLive: CaptHindsight: keep it that way
01:49 AM CaptHindsight: have them prove that they aren't scammers
01:49 AM IchGucksLive: cncnoob: its the fake hunanayung vfd
01:49 AM CaptHindsight: ask them personal questions
01:49 AM cncnoob: The one I linked to?
01:49 AM IchGucksLive: you might not get to the 2kw limit
01:49 AM CaptHindsight: find out where they live and when they are not home
01:50 AM cncnoob: IchGucksLive The one I linked to seemed the most legit. Most sales of a 2.2KW VFD + Spindle, highest rating, and best reviews
01:51 AM IchGucksLive: cncnoob: doesent matter at that price yoiu will make a real god wood mill at 12k rpm and above
01:51 AM cncnoob: I'm cutting plastic and aluminum mostly
01:51 AM IchGucksLive: cncnoob: it will shure fit your need
01:51 AM CaptHindsight: how come RPM is not metric or SAE?
01:52 AM cncnoob: Is that the start of a techie joke or a real question ;)
01:52 AM CaptHindsight: I really want to get to the bottom of these issues
01:52 AM IchGucksLive: rpm is also used in metric system
01:53 AM CaptHindsight: metric minutes
01:53 AM cncnoob: IchGucksLive I hope so. I've been trying to find the best deal that wasn't garbage for over a month now
01:53 AM cncnoob: 4th axis and tailstock next
01:53 AM IchGucksLive: i woudt buy from a local dealer
01:53 AM CaptHindsight: cncnoob: what are you going to use it for?
01:53 AM IchGucksLive: where are you in the USA
01:53 AM IchGucksLive: STATE
01:54 AM cncnoob: Mid west
01:54 AM IchGucksLive: tomorrow there is a grant opening in Sandiego
01:54 AM cncnoob: CaptHindsight plastic and aluminum
01:54 AM cncnoob: Cutting tiny gears
01:55 AM CaptHindsight: https://www.automationtechnologiesinc.com/ same crap but he does warranty it locally
01:55 AM cncnoob: I'm done with them
01:55 AM cncnoob: I purchased my motors, drivers, PSUs, cables, and enclosure from them
01:56 AM cncnoob: The stuff always arrived, but their customer service isn't the best
01:56 AM IchGucksLive: pink here is working also withthise vfd combination
01:56 AM archivist: you dont need high speed for gears
01:56 AM cncnoob: In the end my orders were always corrected
01:56 AM IchGucksLive: i need to leve
01:56 AM CaptHindsight: welcome to China
01:57 AM cncnoob: The main purpose of my mill is to cut gears. I've been doing it with only 3 axis so far but it is kinda painful
01:57 AM cncnoob: I have to do a lot of clean up of the gear after it is done
01:57 AM archivist: you may end up wearing the cutters out if too fast
01:57 AM cncnoob: But when I do fun stuff, I get a little bigger
01:58 AM cncnoob: I made a few turning cubes of varying designs on the mill
01:58 AM cncnoob: When I cut them out of aluminum it takes a long time because my spindle is so slow
01:58 AM archivist: the cutters have to be really sharp to minimise the burrs
01:59 AM cncnoob: My small cutters are good, but I still have stuff leftover when cutting plastic
01:59 AM cncnoob: very annoying
01:59 AM archivist: plastic is like that
02:00 AM cncnoob: I don't have a mister yet either
02:00 AM cncnoob: I tried blasting it with brake clean and that helped
02:00 AM cncnoob: but I got a contact high and it cost me $5 in brake clean
02:05 AM archivist: make sure the rotary is good enough though
02:06 AM cncnoob: You mean for the 4th axis I'm getting ready to purchase?
02:06 AM archivist: yes
02:07 AM cncnoob: This one is the top of my list right now
02:07 AM cncnoob: https://www.aliexpress.com/item/Free-shipping-K11-80mm-100mm-3-jaw-chuck-CNC-4-axis-rotary-axis-4th-axis-A/2053551026.html?spm=a2g0s.13010208.99999999.264.qVA83y
02:07 AM cncnoob: harmonic
02:07 AM CaptHindsight: cncnoob: most often the best parts to make machines to perform these operations are used parts
02:07 AM CaptHindsight: for the lowest price
02:08 AM cncnoob: I looked for used parts on craigslist and ebay but I wasn't finding anything
02:08 AM CaptHindsight: I never use Chinaco parts to make any decent machine
02:09 AM archivist: as the tooth count rises the errors from the drive rise out of proportion tooth to tooth
02:09 AM CaptHindsight: they just don't make them well enough yet
02:10 AM Zebs: Anyone know which command tells GRBL that it is at 0x 0?
02:10 AM Zebs: *0, 0?
02:10 AM cncnoob: I realize I'm kind of rolling the dice, but I don't have 10K to spend on the machine I want.
02:10 AM cncnoob: Just have to hope for the best with the China parts
02:11 AM CaptHindsight: I'd practice my ebay fu
02:11 AM CaptHindsight: I find just about anything I need
02:11 AM cncnoob: archivist are you talking about the harmonic drive or just in general?
02:12 AM CaptHindsight: even air bearing positioners and linear servos
02:12 AM cncnoob: I kinda don't know what I'm doing yet so I'm figuring it out as I go
02:12 AM CaptHindsight: rotary table
02:12 AM cncnoob: All the stuff I'm ordering I've found sufficient documentation for to know it will work with my machine
02:13 AM CaptHindsight: beware of horrible harmonic drives
02:13 AM cncnoob: everything I've read indicates harmonic drives are the best
02:13 AM cncnoob: zero backlash if it is a good one
02:13 AM cncnoob: compact
02:13 AM CaptHindsight: beware of Chinese microns, Kg, ft lbs, HP etc etc
02:13 AM cncnoob: no exposed belt
02:14 AM cncnoob: I figure if the drive goes bad I can replace it with a better quality one of the same size
02:14 AM CaptHindsight: fantasy accuracy and repeatabilty specs
02:14 AM cncnoob: I hope you are wrong
02:15 AM cncnoob: I'm definitely going to be doing some testing for accuracy
02:15 AM CaptHindsight: people believe the wild lies in their spec/s since the prices are so slow
02:15 AM cncnoob: right now I'm accurate to 0.001 which is the worst that is acceptable for me
02:15 AM CaptHindsight: I don't even bother
02:16 AM CaptHindsight: even if you get a good one they don't last
02:16 AM cncnoob: You can kind of tell the real garbage from the just so so stuff
02:16 AM archivist: cncnoob, in general
02:16 AM cncnoob: They have kits like the one I linked to for under $200
02:16 AM CaptHindsight: i save money now by buying known good parts
02:16 AM cncnoob: but those guys also have awful reviews
02:17 AM archivist: cncnoob, I use a Vertex as that has an actual spec, also takes collets
02:17 AM CaptHindsight: don't expect anything to last more than a year or so under use
02:19 AM cncnoob: CaptHindsight remember I'm upgrading an HF 44991 mini mill that I purchased used for $400
02:20 AM cncnoob: I don't want to spend 10K upgrading a machine like that
02:20 AM cncnoob: I would rather learn on this guy then upgrade in a few years and sell it
02:21 AM cncnoob: archivist I googled vertex mill but I'm only seeing vises.
02:21 AM archivist: they make rotaries too
02:21 AM archivist: http://www.collection.archivist.info/archive/DJCPD/PD/2008/2008_10_07_Merlin_worm/p1010054.jpg
02:22 AM archivist: I dont think I could live with a 3 jaw on the tiny stuff
02:23 AM cncnoob: The one I linked to has a 4 jaw option which I would be taking :)
02:23 AM cncnoob: I'm trying to decide between the 100:1 gear reduction and the 50:1 gear reduction
02:23 AM archivist: higher ratio
02:23 AM cncnoob: I'm leaning towards the 100:1 I think because I would assume better accuracy
02:24 AM archivist: the vertex I use is 90:1
02:24 AM archivist: I have measured lower reduction rotaries and the percentage error is worse
02:24 AM cncnoob: I can't tell from that pic, is it moved using a stepper or something of the sort?
02:25 AM cncnoob: I've seen people make 4th axises using old rotary tables
02:25 AM cncnoob: but they almost always had to deal with backlash
02:25 AM cncnoob: that is why I was going to go harmonic
02:26 AM archivist: I drive one direction only to avoid the tiny bit of backlash
02:27 AM archivist: I would want harmonic with collet to I can mount centrally
02:27 AM Deejay: moin
02:29 AM cncnoob: archivist do you have a link to an example of that?
02:29 AM archivist: not seen one, may have to make it :)
02:30 AM cncnoob: So instead of having a 3 or 4 jaw chuck it would have a collet?
02:30 AM archivist: yes then you can make a gear on a stick then shove it in a collet on the lathe to finish
02:32 AM archivist: here I was correcting a built item http://www.collection.archivist.info/archive/DJCPD/PD/2008/2008_10_07_Merlin_Escape/p1010084.jpg
02:32 AM cncnoob: Couldn't I do that anyway with a chuck? I was thinking with the 4th axis I would be able to make a final cut to free the finished piece from the stock just like I have seen people do on a lathe.
02:33 AM archivist: depends how small you are working
02:34 AM archivist: have to go now
02:35 AM cncnoob: ok
02:35 AM cncnoob: take it easy
02:35 AM cncnoob: thanks for the info
02:40 AM pcw_mesa_ is now known as pcw_mesa
03:09 AM Phipliv: Zebs : time zones - I'm off to work!
05:56 AM jthornton: morning
05:56 AM XXCoder: hey
05:59 AM IchGucksLive: hi
06:00 AM XXCoder: hey
06:00 AM IchGucksLive: XXCoder: makerbot is going big from tomorrow as 3 storse open in CA
06:00 AM XXCoder: the 3d printing company?
06:01 AM XXCoder: or do they make cnc machines also?
06:01 AM IchGucksLive: no its not only printing
06:04 AM XXCoder: so whats they make
06:05 AM IchGucksLive: XXCoder: http://makerplace.com/
06:06 AM XXCoder: oh yeah
06:06 AM XXCoder: jthornton: office mill died again lol
06:06 AM XXCoder: its spindle bearing is really shot
06:07 AM jthornton: back to the robo drill?
06:08 AM XXCoder: been running other part on that same time as om.
06:08 AM XXCoder: now its just robo
06:08 AM XXCoder: very hot and humid day
06:09 AM XXCoder: and on way home, i5 was completely jammed with cars
06:09 AM XXCoder: I dodged that but drove long way home
06:09 AM XXCoder: work was ok and boring, but drive home was not fun ugh
06:13 AM jthornton: hmm I'm behind the curve on data usage with 4.8GB used already this month
06:17 AM malcom2073: jthornton: If you have sprint service out there, I found an unlimited (actually unlimited) wireless service for only $25 a month (after you purchase a $200 device)
06:18 AM malcom2073: I just switched from my slow DSL to it, double the speed for 1/4 the price
06:19 AM jthornton: we have verizon and att and some little ones
06:21 AM malcom2073: Ah unfortunte
06:21 AM malcom2073: I had to get an antenna to get service here, but it seems fairly stable
06:21 AM jthornton: yea my internet is on wildblue
06:22 AM jthornton: I have free time from 4am to 8am so I try and do my d/l during that time but sometimes web pages can really screw you with data
06:22 AM malcom2073: Alright, figured I'd suggest it anyway heh
06:23 AM jthornton: thanks for the suggestion
06:23 AM malcom2073: I thought about satelllite, but the download limits would kill me, since we use streaming
06:27 AM jthornton: cell service was so bad out here I had to have an antenna repeater for ATT then verison put up a tower not to far from me and I switched
06:29 AM jthornton: weird this Dell server my buddy gave me the pci ports are reversed on the mb
06:30 AM jthornton: so I can't even pop a different motherboard in it
06:31 AM malcom2073: Heh, gotta love Dell
06:31 AM malcom2073: your power supply will also be pinned different
06:31 AM malcom2073: so don't plug it into another motherboard without re-pinning
06:31 AM XXCoder: dell loves to mess with stuff
06:32 AM jthornton: it does have a Quadro video card that might be nice
06:32 AM jthornton: yea I have a couple more Dell's and the case is useless
06:33 AM XXCoder: can always use it for something else
06:33 AM XXCoder: electrics box for your cnc?
06:38 AM jthornton: I was hoping to have an easy server for my zoneminder setup...
06:39 AM jthornton: XXCoder: got most of the Tiny Whoop parts in yesterday and man is that thing small at 65mm motor to motor
06:43 AM jthornton: this Debian 9 install is a bit flaky and comes up without menus a lot
06:44 AM Tom_L: the lcnc install or regular debian 9?
06:45 AM jthornton: the lcnc
06:45 AM Tom_L: doesn't work well on slower hardware
06:48 AM jthornton: https://www.asus.com/us/Motherboards/E45M1M_PRO/
06:48 AM jthornton: yea its just a dual core mb
06:49 AM Tom_L: i tried it on a D525 and latency was horrible
06:49 AM Tom_L: it was ok on the asrock board though
06:52 AM jthornton: yea that mb has pretty bad latency I just need to swap it out with this ASRock 890FS Deluxe 4 mb I think I have a 6 core processor for it somewhere
09:34 AM thorsten__: Hallo Leute wie kann ich ein Werkstück genau bearbeiten was schräg auf dem Tisch liegt, wie kann ich Linuxcnc dazu bringen den Versatz mit zu berücksichtigen Vielen dank
09:44 AM pcw_home: G10 L2 P1 R45?
09:46 AM JT-Shop: what's a good current mother board for a server pc?
09:48 AM FinboySlick: JT-Shop: I like supermicro's stuff. They're rock-solid.
09:49 AM FinboySlick: JT-Shop: What type of workload are you expecting? Crunching or more of an IO sort of deal?
09:51 AM _methods: +1 for supermicro
09:52 AM cradek: thorsten__: you can locate the workpiece with a probe, and then use those results to calculate offset and rotation. Then as pcw says, G10 L2 is the way to set the coordinate system to match your calculations.
09:53 AM cradek: you might use the atan[]/[] gcode function to calculate the rotation
09:55 AM JT-Shop: just setting up ZoneMinder
09:59 AM JT-Shop: wow some of supermicro mb's are crazy expensive
09:59 AM JT-Shop: what is the difference between a server motherboard and a regular motherboard?
10:01 AM _methods: well can be lots of things
10:01 AM _methods: but usually ram
10:01 AM _methods: and cpu sockets
10:01 AM _methods: but you can use pretty much anything for a zoneminder box
10:02 AM _methods: you don't have to have a server mobo
10:02 AM _methods: how many cams do you want to use?
10:02 AM _methods: https://wiki.zoneminder.com/How_Many_Cameras
10:02 AM JT-Shop: I have one cam here and one more on the way I may have up to 4 dunno
10:03 AM thorsten__: cradek_ thank's I will try it
10:04 AM _methods: yeah 4 cams you can pretty much just use normal mobos
10:04 AM _methods: no need to buy expensive "server" mobo
10:04 AM JT-Shop: ok
10:05 AM JT-Shop: I've had pretty good luck with Gigabyte motherboards
10:05 AM _methods: if you want to record at a higher img size just make sure you get fast hdd or ssd
10:05 AM _methods: and probably want a quad core
10:05 AM _methods: if you want to try and do HD on 4 cams
10:06 AM _methods: you can saturate a network real quick with their traffic
10:06 AM JT-Shop: ok thanks... dang I gotta run and mail some packages
10:06 AM _methods: so you may want to put your camera traffic on a separate network
10:07 AM _methods: but only 4 cams shouldn't be that bad
10:35 AM mtpocketscnc: https://www.youtube.com/watch?v=egdhA2PBF54
10:36 AM mtpocketscnc: has anyone tried this? thinking of getting
11:13 AM codepython777: http://bit.ly/2vmPvhc - I am looking for clamps like this for my cnc machine - any recommendations? I would like to be able to catch things between .125" to 1" thick.
11:15 AM archivist: looks like you found them
11:17 AM archivist: often one has to make clamps to suit the job anyway
11:22 AM codepython777: archivist: http://www.ebay.com/itm/58-pc-7-16-Slot-3-8-Stud-HOLD-DOWN-CLAMP-CLAMPING-SET-KIT-for-BRIDGEPORT-MILL-/310705210579?hash=item48577944d3:g:Bc8AAMXQzr1R4Btn - I still need to check if these are useful on my cnc
11:24 AM archivist: I have a set like that, check your slot size to see if the T nuts fit
11:30 AM codepython777: On their website they say: HG20 Linear Guide Rails
11:36 AM archivist: text unrelated to clamps error at line 1
11:40 AM codepython777: archivist: trying to http://imgur.com/a/KScYt - this is what my slots look like
11:41 AM archivist: you can get nuts for them, but not in those proper clamp sets
11:43 AM codepython777: archivist: The longest length of that hole is 1"
11:46 AM codepython777: archivist: how does one find out which clamp set will work for my machine: http://littlemachineshop.com/products/product_category.php?category=11
11:47 AM cradek: the main consideration is whether the T nuts fit in the T slots
11:49 AM cradek: yours look particularly easy to measure because you can get to the ends!
12:10 PM codepython777: cradek: the problem is they measure 8.6mm roughly - no idea why
12:12 PM cradek: you could just make your own nuts. tap them to fit the studs in one of those existing sets. get the model with the biggest studs that will fit through the slots.
12:13 PM cradek: maybe you can find a set with 5/16 studs
12:14 PM codepython777: cradek: https://www.omiocnc.com/products/x8-2200epl.html
12:19 PM codepython777: cradek: Does anyone make nuts of that particular shape? 5/16 will fit
12:26 PM IchGucksLive: hi
12:28 PM archivist: codepython777, the people making the extrusion make nuts
12:33 PM Zebs: Good news!
12:33 PM Zebs: IchGucksLive, Phipliv, I've gotten it mostly callibrated.
12:33 PM Zebs: *calibrated.
12:33 PM Zebs: Need to figure out a few more things, but I'll have this and the second one calibrated in no time.
12:34 PM Zebs: Thanks!
12:34 PM Zebs: Chilipeppr was super useful.
12:34 PM IchGucksLive: things work out at the time is passing
12:35 PM codepython777: archivist: Not sure who to go to buy those - any pointers?
12:35 PM archivist: I dunno who's extrusion you are using
12:36 PM Zebs: Indeed.
12:37 PM archivist: but an ebay search soon brought up http://www.ebay.co.uk/itm/Aluminium-extrusion-2020-Hammer-T-Nuts-100-m5-3d-printer-CNC-UK-SELLER-/172777492566
12:37 PM archivist: http://www.ebay.co.uk/itm/T-Nuts-for-3030-Aluminium-Extrusion-Profile-30mm-Slot-8-End-Cap-3D-Printer-CNC-/201525243196
12:38 PM Zebs: 80/20 for life.
12:38 PM archivist: or flexible machine :)
12:58 PM phiplii: evening
01:00 PM Zebs: Evening.
01:00 PM Zebs: Chilipeppr was awesome.
01:00 PM Zebs: Still need to figure out how to tell the thing where the head is on the platform ahead of time, and how to invert an axis, but otherwise, it's great.
01:02 PM phiplii: microswitches
01:02 PM phiplii: what version of GRBL are you using?
01:03 PM Zebs: I think I'm using a version built off of .9, or 1.1.
01:03 PM Zebs: I forget.
01:03 PM phiplii: Zebs : https://github.com/grbl/grbl/wiki/Connecting-Grbl
01:03 PM Zebs: It's a slightly modified version to work with these motors.
01:03 PM phiplii: I use a slightly modified version of 0.9
01:03 PM Zebs: I've gotten it connected to chilipeppr though.
01:03 PM Zebs: And was able to jog and mostly calibrate.
01:03 PM Zebs: I love the visual interface.
01:04 PM Zebs: But I'm using 28BYJ-48 with a Darlington array, so they're touchy.
01:04 PM Zebs: Which is why I am using the modified firmware.
01:04 PM Zebs: Is there a way to tell it where it is?
01:04 PM Zebs: Like, where the head is?
01:04 PM phiplii: for z axis you can probe
01:04 PM Zebs: I'd like to tell it when it is zeroed.
01:05 PM phiplii: if you use 0.9 or newer, that is connected to A5
01:05 PM phiplii: for X and Y you can use limit switches
01:05 PM Zebs: Which is connected to A5?
01:06 PM phiplii: Z axis probe
01:06 PM Zebs: I suppose I should probably use limit switches...
01:06 PM Zebs: This is built out of cardboard.
01:06 PM Zebs: And things.
01:06 PM Zebs: Mind you.
01:06 PM Zebs: Not a high tech opperation.
01:06 PM phiplii: switches are cheap
01:06 PM Zebs: This is true.
01:06 PM Zebs: I'm just kind of lazy.
01:06 PM Zebs: Got any nice and sensitive leaf switches you'd recommend?
01:07 PM phiplii: and so the truth is revealed :)
01:07 PM Zebs: I guess I could make some...
01:07 PM Zebs: I could totally make some.
01:07 PM Zebs: Good point, phiplii.
01:07 PM phiplii: anything from china = cheap
01:07 PM Zebs: These go at both ends of the carriages, yes?
01:07 PM phiplii: yeah, but to home you only need one side for each axis
01:08 PM Zebs: I think I'll use two.
01:08 PM Zebs: The cardboard doesn't like collisions.
01:11 PM Zebs: You might like these plotters.
01:11 PM Zebs: They're nearly entirely built from trash.
01:12 PM Zebs: I'll get pictures later.
01:12 PM MacGalempsy: hello
01:13 PM Zebs: But yeah, is it possible to invert an axis?
01:13 PM Zebs: Hello.
01:13 PM MacGalempsy: anyone making chips today?
01:14 PM phiplii: Zebs : yes
01:15 PM phiplii: GRBL panel, one of the options is axes invert
01:15 PM phiplii: given as a binary number, where each bit represents a different thing
01:15 PM Zebs: Remember which command it is?
01:15 PM phiplii: I'll just find a board to plug in so I can look...
01:15 PM Zebs: Appreciate it.
01:16 PM Zebs: Really do appreciate your assistance. You've sped this project up significantly.
01:19 PM IchGucksLive: Zebs: it is offen best to not invert in programm invert the stepepr by changing the cable in pair
01:20 PM Zebs: http://domoticx.com/wp-content/uploads/Stappenmotor-28BYJ-48-bedrading-schema.png
01:20 PM Zebs: Swap 2&3, 4&1?
01:20 PM Zebs: Or 2&4, 1&3?
01:21 PM IchGucksLive: you did not connect the red or
01:21 PM IchGucksLive: change 2-4 and 3-1
01:22 PM Zebs: Wonderful, thank you!
01:22 PM Zebs: That part will be easy.
01:22 PM MacGalempsy: JT-Shop: what is going on today?
01:28 PM Zebs: I'll attach everything and see if it works once I am home.
01:28 PM Zebs: Lastly, can the sender scale files to the device?
01:29 PM Zebs: Or must they be scaled manually?
01:30 PM IchGucksLive: Zebs: the file will be worked as it is on the generaters table
01:32 PM MacGalempsy: JT-Shopp Did you get any rain up there last night?
01:33 PM gloops: quick diy cnc question
01:34 PM Zebs: Whats's up?
01:34 PM gloops: 5v 2a supply from PC power pack ok for BOB?
01:34 PM IchGucksLive: bob
01:34 PM Zebs: What is?
01:34 PM IchGucksLive: gloops: the BOB needs 200mA
01:34 PM phipli: Zebs : dir port invert mask
01:34 PM gloops: breakout board
01:35 PM Zebs: Ahh, thank you, phipli.
01:35 PM phipli: is what it is called if you do try to invert
01:35 PM Zebs: This is going to be awesome.
01:35 PM gloops: 6amp mine i think
01:35 PM IchGucksLive: gloops: what BOB
01:35 PM phipli: but you'll have to look up each bit
01:35 PM phipli: don't have it to hand
01:36 PM IchGucksLive: gloops: https://www.youtube.com/watch?v=I00ArvYvZgI THAT one
01:36 PM gloops: bob = db25-1205
01:39 PM IchGucksLive: as shown in the video you need also 12-24V to get the inputs
01:39 PM gloops: ive got 5v 2a and 5v 0.5a on a PC power pack
01:40 PM gloops: yes thanks, ive got a sperate 36V power pack for the motors, but not got a seperate 5v supply for the signals
01:41 PM gloops: PC supply is well regulated i think it should be ok
01:42 PM IchGucksLive: 5V 0.5A is quite good
01:42 PM gloops: yes i think if i try that i wont blow anything up lol
01:43 PM gloops: im sure the optimum is like 4.5 amp though
01:43 PM gloops: just wondered if anyone had run one from PC power
01:44 PM Zebs: Most electronic applications will not pull more amperage than needde.
01:44 PM Zebs: *needed.
01:44 PM gloops: right
01:44 PM Zebs: As long as your voltage is good, over-amperage is usually fine.
01:44 PM Zebs: This is not true in EVERY case, but those cases are usually related to battery technologies.
01:44 PM Zebs: Things that are volatile.
01:44 PM gloops: yeah youre right
01:44 PM Zebs: Granted, this is from a user level.
01:45 PM Zebs: In circuit design, specific amperage is of course very important for many things.
01:45 PM Zebs: But.
01:45 PM Zebs: You're good.
01:47 PM gloops: theres no good documentation for these chinese components, somebody should do some
01:48 PM IchGucksLive: i did in the vidio
01:48 PM IchGucksLive: and alot of else
01:48 PM IchGucksLive: i see 15 at least
01:48 PM gloops: im going to watch it now
01:48 PM IchGucksLive: gloops: whre are you in the world
01:49 PM IchGucksLive: im in germany
01:49 PM Zebs: Ooh, you do videos. I'll watch this later.
01:50 PM gloops: hey Ich - 12-24v for the input?
01:51 PM phipli: IchGucksLive: you missed thorsten__ earlier
01:51 PM phipli: he was probably in germany
01:52 PM gloops: on the inputs ive got VDD 2x Grounds and +5v terminals
01:52 PM gloops: i thought you meant 12-24v for the drivers
01:53 PM gloops: im in UK
01:53 PM * phipli waves at gloops
01:53 PM gloops: hi!
01:53 PM phipli: me and archivist are in the midlands
01:54 PM gloops: near sheffield
01:54 PM phipli: I'm in Derby
01:56 PM IchGucksLive: gloops: this BOB is DC-DC separeted
01:56 PM IchGucksLive: gloops: it uses 5V for logic out
01:56 PM IchGucksLive: and 12V-24V for ligic input
01:56 PM IchGucksLive: logic
01:57 PM IchGucksLive: so it is shilded
01:57 PM gloops: well this is my exact board and driver - kid only puts 5v in https://www.youtube.com/watch?v=bWVKJUnSLUc
02:02 PM IchGucksLive: gloops: yes that works
02:02 PM IchGucksLive: it is the old one
02:03 PM IchGucksLive: with nonshilded inputs
02:03 PM gloops: this is only cheap rubbish really
02:03 PM IchGucksLive: my BOB is 5USD and has the XH connector for quick driver connect
02:03 PM IchGucksLive: gloops: http://heimwerkermarkt-tretter.de/3achs_elek
02:04 PM IchGucksLive: http://heimwerkermarkt-tretter.de/5achs_elek
02:04 PM IchGucksLive: no cableing
02:05 PM gloops: very tidy
02:06 PM IchGucksLive: http://heimwerkermarkt-tretter.de/4achs_elek
02:06 PM IchGucksLive: this is quite tight
02:06 PM IchGucksLive: but it runs quick
02:07 PM IchGucksLive: https://www.youtube.com/watch?v=sqx9w80diKo
02:07 PM gloops: mine wont look like that lol
02:07 PM IchGucksLive: speed is all you need
02:07 PM IchGucksLive: its the elecroic on that mashine
02:08 PM gloops: what speed is that like how many ipm?
02:09 PM IchGucksLive: its 12
02:09 PM IchGucksLive: 120
02:09 PM gloops: i built a very heavy thing with chain drive lol, almost ready for testing with motors, got some doubts with backlash but it took ages to make, i got to know now! haha
02:09 PM gloops: yeah thats pretty quick for cutting
02:09 PM IchGucksLive: then go for 2400mm/min
02:10 PM IchGucksLive: or less as 50ipm
02:10 PM IchGucksLive: but the driver will make it
02:10 PM IchGucksLive: BOB also
02:10 PM IchGucksLive: depends on pc latency
02:10 PM IchGucksLive: if you can go 5i25
02:10 PM gloops: yes probably be looking at something like that
02:10 PM gloops: 50
02:11 PM IchGucksLive: im off Gn8
02:14 PM Zebs: I found the cutest things.
02:15 PM Zebs: http://www.ebay.com/itm/DC4-6V-5V-Miniature-Stepper-Motor-Driver-Control-Board-2-Phase-4-Wire-Drive-Chip-/322568338322?epid=20004098292&hash=item4b1a923b92:g:V0QAAOSwbiFZURmS
02:15 PM Zebs: http://www.ebay.com/itm/5pcs-Miniature-10MM-2-Phase-4-Wire-Stepper-Motor-Brushless-Motor-Copper-Gear-/262579770522?epid=1682701627&hash=item3d22f9549a:g:fQcAAOSw5cNYEwNq
02:15 PM Zebs: This is happening.
02:17 PM SpeedEvil: They are about 16 steps though
02:18 PM SpeedEvil: maybe 8, I forget
02:46 PM nitrxgen_: i like how they shamelessly use someone else's watermarked images for their listing
02:47 PM nitrxgen_: but it could be another account given the pattern of the username
02:47 PM Zebs: Oh, you know these, SpeedEvil?
02:47 PM Zebs: I would like a really small stepper with moderate precision.
02:47 PM Zebs: Thoughts?
02:47 PM CaptHindsight: not those
02:47 PM SpeedEvil: Zebs: I have some
02:47 PM SpeedEvil: no
02:48 PM SpeedEvil: you could microstep them
02:48 PM SpeedEvil: which would help some
02:48 PM CaptHindsight: they are typically used in cameras to control the focus
02:48 PM nitrxgen_: or cd players to move the head
02:49 PM CaptHindsight: https://www.micromo.com/products/stepper-motors
02:49 PM Zebs: That explains it.
02:49 PM nitrxgen_: or maybe those are a little larger
02:49 PM CaptHindsight: https://www.pololu.com/product/2295
02:49 PM SpeedEvil: There is nothing stopping you using them as CNC
02:49 PM sync: Well, the issue is that microstepping does not improve precision
02:50 PM Zebs: Do you have a particular recommendation?
02:50 PM CaptHindsight: SpeedEvil: outside of needing any torque or precision :)
02:50 PM SpeedEvil: sync: precision is likely to be adequate to be improved some by microstepping.
02:50 PM SpeedEvil: CaptHindsight: well, yes.
02:50 PM sync: No SpeedEvil
02:50 PM sync: Impossible
02:50 PM SpeedEvil: ?
02:50 PM CaptHindsight: "Not for CNC use", " Do not serve with Rice"
02:51 PM Zebs: I'm currently using some really cheap steppers.
02:51 PM Zebs: And they're small.
02:51 PM Zebs: But I want smaller.
02:51 PM sync: Due to the magnetic variance in the poles
02:51 PM Zebs: For smaller device.
02:51 PM SpeedEvil: sync: right. Which is not particularly relevant.
02:51 PM sync: It is
02:51 PM CaptHindsight: http://www.portescap.com/products/miniature-stepper-motor
02:52 PM sync: As there is zero holding torque at your microstep
02:52 PM SpeedEvil: sync: If the step angle is 40 degrees, and the magnetic variance is 5 degrees, if you microstep, you can improve the resolution to 10 degrees with microstepping meaningfully
02:52 PM Wolf__ is now known as Wolf_
02:52 PM SpeedEvil: sync: well, of course.
02:53 PM SpeedEvil: http://spritesmods.com/?art=jello3dprinter - related
02:53 PM sync: And if you cannot expect your step to be where you think it is what good does microstepping do beides smoother running?
02:53 PM CaptHindsight: Zebs: what the teensy stepper motor going to drive?
02:54 PM sync: The only way to do it is to use the stepper as two phase motor with feedback
02:54 PM CaptHindsight: don't forget odor and flavor
02:54 PM SpeedEvil: sync: that's not quite true. If you microstep, you do get a torque holding it at a certain spot. It is a lower torque than that holding it in a natural step, and fuzier.
02:55 PM Zebs: A teensy plotter.
02:55 PM CaptHindsight: http://www.sonishop.com/en/motor-and-servo/44-the-new-nidec-7mm-2-phase-4-wire-miniature-stepper-motor-with-a-slider-bar.html
02:56 PM CaptHindsight: why not a linear servo then?
02:56 PM Zebs: That's cute, but really pricey.
02:57 PM CaptHindsight: is the plotter sub micron?
02:57 PM Zebs: It is not.
02:57 PM CaptHindsight: then I'd suggest a piezo drive
02:57 PM sync: Attatch a good encoder to a stepper and measure the torque, or rather the pos error at a certain torque
02:57 PM sync: It is just not worth it
02:57 PM SpeedEvil: sync: yes, you also need to do harmonic correction. It is often not worth it.
02:58 PM Zebs: Piezo drive?
02:59 PM CaptHindsight: http://www.pi-usa.us/products/PiezoActuators/index.php
02:59 PM CaptHindsight: https://www.americanpiezo.com/piezo-theory/actuators.html
02:59 PM CaptHindsight: https://www.thorlabs.com/navigation.cfm?guide_id=82
03:00 PM sync: 10bux is pricey? Hmm
03:05 PM CaptHindsight: Zebs: what are your speed and torque requirements?
03:05 PM CaptHindsight: or is this just trial and error?
03:07 PM CaptHindsight: any ideas on having LCNC control temperature besides classic ladder and nested PID's?
03:07 PM CaptHindsight: I need to control temp and the ramp rates up and down over time
03:08 PM CaptHindsight: say 30C to 180C and ramp it over 1 hour and then hold it for 3 hours then ramp it down to 30C over 2 hours
03:10 PM CaptHindsight: Zebs: another cheap option might be a DC motor and cheap gearbox
03:12 PM CaptHindsight: Tom_L: did you find out what blew up in the drive?
03:20 PM miss0r2: I just had a rather old 20x70mm carbide endmill do a full depth pass on the outside of a raw stock, covered in scale. and it survived :o
03:21 PM miss0r2: it realy must be one of thoes proprietary blends of 11 herbs and spices
03:21 PM XXCoder: nahh 11 metals alloy ;)
03:22 PM miss0r2: ;)
03:23 PM CaptHindsight: miss0r2: I take the word "made in China" appear no where on the tool
03:24 PM miss0r2: that goes without say :]
03:25 PM CaptHindsight: I broke my favorite 1/4" super allow hard as shite end mill on aluminum the other day
03:25 PM miss0r2: That sucks... This endmill came with the CNC when I bought it, so I didn't have too high expectations. Now it will enter the hall of fame :]
03:26 PM XXCoder: sometimes its random as shit
03:26 PM CaptHindsight: fed to fast using the MPG
03:26 PM XXCoder: I had tool run 10 times longer than average, it engraved 300 parts
03:26 PM miss0r2: MPG?
03:26 PM XXCoder: normally it lasts maybe 40-50
03:27 PM CaptHindsight: https://ae01.alicdn.com/kf/HTB1TBbcLpXXXXb9XXXXq6xXFXXXf/CNC-Pulse-Generator-6-Axis-MPG-Pendant-Handwheel-Emergency-Stop-manual-pulse-generator-for-Siemens-MITSUBISHI.jpg
03:27 PM XXCoder: thats not bad. usb or serial connector?
03:28 PM CaptHindsight: LPT
03:29 PM miss0r2: I am building a machine square clamp? basically a big block of steel, that I can bolt to the table and then bolt stuff to the side of it at 90degrees to the table. The chunk of steel I was handed measures 200x200x65mm :]
03:29 PM miss0r2: I Couldn't quite find one that I like(for the price I am willing to pay, that is)
03:30 PM CaptHindsight: precision ground blocks that size might be $2k or more
03:31 PM miss0r2: I am also going to drill and tap ~40 12mm threads on each side of it
03:31 PM XXCoder: theres cheap 246 blocks I would trust it to be within .001"
03:31 PM XXCoder: $100 bucks each if I recall right
03:31 PM miss0r2: and then some on the sides (Haven't quite planned it out yet). I am going to surface grind it as well
03:31 PM miss0r2: It is mystery metal, so I'm not so sure about hardening it
03:32 PM CaptHindsight: XXCoder: I bought a set from Shars for about that price
03:32 PM CaptHindsight: don't think they are that accurate
03:32 PM miss0r2: xxcoder: I have some sort of OCD about this stuff. All the imprecissions stack up, so I want the stuff I clamp to be very very acurate
03:32 PM XXCoder: capt possibly.
03:33 PM XXCoder: though could be re-ground?
03:33 PM CaptHindsight: http://www.shars.com/246-precision-block
03:33 PM CaptHindsight: yeah if I really needed accuracy I'd regrind them
03:33 PM miss0r2: Also, I like metric...
03:34 PM CaptHindsight: like everything else I get there
03:34 PM gloops is now known as Goodlord
03:34 PM XXCoder: lol yea saw metric versions of 123 it looks weird :P but yeah
03:34 PM miss0r2: i'm hoping to get this acurate to within 0.003mm
03:34 PM CaptHindsight: worst ever was an adapter for R8 to keyless chuck
03:34 PM miss0r2: Wich should be doable if I take my time
03:35 PM CaptHindsight: it was way off center and the R8 part would not even fit into the spindle
03:35 PM miss0r2: lol
03:35 PM XXCoder: shars sell crap stuff eh
03:35 PM miss0r2: You get what you pay for
03:35 PM CaptHindsight: like if the machinist aligned by eye and then put the part into the good bin
03:36 PM miss0r2: bleh.. Family duty calls... See you around
03:36 PM CaptHindsight: yeah, I don't get much there, they are just down the road
03:38 PM Goodlord: accurate to .003 wtf
03:39 PM XXCoder: .003" is great for parts. not so great for precision blocks.
03:41 PM Goodlord: well you want a surface grinder
03:42 PM XXCoder: well yes. not exactly the point :)
03:42 PM Goodlord: and you will not get that even with a surface grinder
03:42 PM Goodlord: youre gonna have to scrape that by hand
03:45 PM CaptHindsight: yeah pretty poor specs
03:45 PM CaptHindsight: I got them since they were metal and close enough
03:45 PM CaptHindsight: and in a hurry
03:46 PM CaptHindsight: Shars has a US supplier of end mills that aren't bad...
03:46 PM CaptHindsight: but I just buy good cutting tools now from other suppliers
03:46 PM XXCoder: my chinese 123 blocks pair is within .0005, flatness .0001 squareness of samiliar
03:47 PM CaptHindsight: yeah, you can get lucky and get the good set they made that day
03:47 PM XXCoder: not too bad for pretty cheap
03:47 PM XXCoder: yeah
03:47 PM CaptHindsight: unfortunately they also package the rejects for sale as good
03:47 PM CaptHindsight: and wait for you to complain
03:47 PM XXCoder: I don't think they actually make em in pairs as required
03:47 PM XXCoder: I was just lucky
03:48 PM Goodlord: how are you measuring that XXCoder?
03:48 PM Goodlord: that is less than a tenth in imperial
03:48 PM XXCoder: work rock and dial indictor.
03:48 PM XXCoder: I could hand em in for cmm measuring but I refuse to do home stuff on other worker time
03:49 PM XXCoder: that rock was rated at .000012" class A so pretty dang flat :)
03:50 PM Goodlord: dial indicator haha
03:50 PM Goodlord: you are taking the piss man you cannot get close
03:52 PM XXCoder: whatever
03:57 PM phipli: anyone got any experience with these : http://www.ebay.co.uk/itm/262968207663
03:57 PM XXCoder: of course it's high quality lol
03:57 PM XXCoder: besides that dunno
03:58 PM phipli: description is bad enough that I don't know if it does what I need :)
03:59 PM XXCoder: (12) in the PWM side of the output is PWM
03:59 PM XXCoder: lol
03:59 PM CaptHindsight: phipli: with a clean power supply they can be ok
04:00 PM CaptHindsight: you can see that they are LM383's
04:00 PM andypugh: What is the application?
04:00 PM CaptHindsight: and the circuit is so simple you can also see the passives chosen
04:01 PM phiplii: need to step up 5v pwm to 10v pwm
04:02 PM Goodlord: it is all good stuff from mr Longs motor co lol
04:02 PM phiplii: to drive a spindle controller's external speed input
04:02 PM CaptHindsight: ah thats not what that board does
04:02 PM Goodlord: vfd?
04:02 PM CaptHindsight: you just need to level shift
04:03 PM phiplii: I have some 2n7000s somewhere
04:03 PM phiplii: but I was feeling lazy :(
04:04 PM phiplii: also don't have a 10v powersupply that I could easily donate so was hoping for something that would trim down a high voltage, or boost 5v
04:05 PM phiplii: Goodlord, yeah
04:06 PM phiplii: misunderstood the badly translated stuff, and for some reason actually thought that the spindle controller I got would actually measure the pwm duty... rather than just treat it as a voltage
04:06 PM phiplii: which looking back I realise I was... optimistic
04:06 PM andypugh: Can’t you configure it to run at dull speed at 5V?
04:07 PM andypugh: (full speed, that is)
04:07 PM phiplii: It only just manages 4.5k at 5v
04:07 PM phiplii: I could just use the pot
04:07 PM phiplii: (and will do until bits get here)
04:07 PM phiplii: but I'd like to be able to set the speed from my computer
04:08 PM andypugh: No option to configure the max speed of the drive for twice what you actually want?
04:08 PM phiplii: just a dumb box
04:08 PM phiplii: cheap chinese stuff
04:09 PM phiplii: power / motor out / pot / "0-10v"
04:09 PM phiplii: that's all I've got :)
04:09 PM andypugh: You can do 5V PWM to 10V PWM with just an opto, I think.
04:09 PM phiplii: yeah
04:09 PM phiplii: considered that
04:10 PM andypugh: Or a ULN2003
04:10 PM phiplii: got some of them somewhere too...
04:10 PM phiplii: I like them
04:10 PM phiplii: great for LEDs
04:11 PM phiplii: I'd probably go 2n7000 because I know the level shifter circuit quite well from doing 3.3v to 5v I2C
04:11 PM phiplii: still need a source of 10v though :)
04:11 PM phiplii: heh
04:11 PM phiplii: 9v batter?
04:11 PM phiplii: *battery
04:16 PM andypugh: Easiest is probably a tiny boost converter from eBay. http://www.ebay.co.uk/itm/281128296063
04:18 PM phiplii: One of them and an optocoupler is probably the simplest circuit
04:19 PM phiplii: if I got an adjustable boost converter I could tweak it to 10v
04:31 PM Deejay: gn8
04:37 PM phiplii: found one of these upstairs :
04:37 PM phiplii: https://finddealsfor.me/banggood/sku310819/2a-dc-sx1308-high-current-adjustable-boost-module
04:38 PM * phiplii goes looking for an optoisolator
05:20 PM yasnak: I love running wonky turret style lathes on parts that require a tapered point
05:20 PM yasnak: nawt
05:46 PM enleth: are shoddily repainted machine tools "in good working condition" a thing in the US too?
05:46 PM enleth: like this: https://8.allegroimg.com/original/0145a8/6f2362a14276bfc2fbec69e69798
05:46 PM cradek: wow they got the pallet too!
05:46 PM enleth: they could have just as well slapped a sign saying "DON'T BUY! BEWARE! PIECE OF SHIT! WE HAD TO HIDE SOMETHING!"
05:46 PM cradek: that's amazing
05:46 PM vfdinfo: how do you search the logs?
05:47 PM vfdinfo: I posted a link a long time ago and need it :/
05:47 PM enleth: cradek: damn, I did not notice the pallet before
05:48 PM enleth: a couple days ago I found a lathe painted green like that too
05:48 PM enleth: right over absolutely everything
05:48 PM vfdinfo: JT-Shopp, do you mind if I wget http://tom-itx.no-ip.biz:81/~tom-itx/irc/logs *.html ?????
05:48 PM enleth: obviously nothing has been moved after painting
05:49 PM enleth: I'd rather buy a dirty shoddy one any day
05:50 PM enleth: if anything, it's exactly the same amount of work getting it back in shape, less removing the paint from all the places it shouldn't be
05:52 PM enleth: I wonder what people who buy that are thinking
05:52 PM BeachBumPete: they think OOohhh its pretty and fresh paint!! ;)
05:53 PM enleth: anyway, I'm slowly preparing to buy a small surface grinder
05:53 PM enleth: but definitely not that green one
05:55 PM enleth: oh man
05:55 PM enleth: that yellow on top of the table riser
05:55 PM enleth: that's not paint
05:55 PM enleth: another photo shows it a bit closer
05:55 PM enleth: it's rust
05:58 PM JT-Shopp: hmm he didn't stay long
05:59 PM phiplii: andypugh, through the optoisolator it just runs at full speed
06:01 PM andypugh: phiplii: I suspect that this is because the opto has no current sink capacity
06:02 PM phiplii: on the input side?
06:02 PM andypugh: On the output side.
06:02 PM andypugh: You probably want a logic-output one
06:02 PM phiplii: http://www.farnell.com/datasheets/73758.pdf
06:03 PM phiplii: that is what I found upstairs
06:03 PM andypugh: https://goo.gl/photos/KrRPc34rDcA75aB76
06:04 PM phiplii: rather than just gating the 10v
06:04 PM phiplii: hum
06:05 PM andypugh: How have you wired the coupler? I would suggest a 1k pull-up to 10V and the opto between the pull-up and gnd
06:05 PM andypugh: That schematic is for analogue 10V supply not PWM
06:05 PM phiplii: I just put it as a switch between the 10v supply and 10v input on the speed thingy
06:06 PM andypugh: Do you have a scope?
06:06 PM phiplii: yes....
06:06 PM phiplii: somewhere
06:06 PM andypugh: I expect you will find that the input stays high even with the opto off
06:06 PM phiplii: have a proper but slightly dodgy one in the shed
06:06 PM phiplii: and a DSO Nano thing upstairs somewhere
06:06 PM phiplii: I know it does
06:06 PM phiplii: because it was latching
06:07 PM andypugh: So, try what I suggested (not the picture, the words)
06:08 PM andypugh: 10V — 1K —*— OPTO — 0V
06:08 PM andypugh: Connect the PWM input to the *
06:08 PM * phiplii casts around for a 1k
06:09 PM andypugh: Or a 2k, 5k, maybe a 330.
06:09 PM andypugh: You just want to make sure the opto current is limited
06:09 PM phiplii: got a 560 in front of me
06:09 PM phiplii: and a 10k
06:09 PM phiplii: :)
06:10 PM Tom_L: put 2 10k together
06:10 PM andypugh: Actually, my way will mean that the input never goes lower than the led forward voltage. Probably not a problem but high-side switching might be better.
06:11 PM phiplii: switch the resistor to the other side?
06:11 PM andypugh: No, wait, I am completely wrong, it’s not the LED side we are talking about
06:11 PM phiplii: yeah
06:11 PM phiplii: 10v is not good for mcu
06:11 PM andypugh: As you were.
06:11 PM phiplii: :)
06:11 PM phiplii: just realised you said input
06:12 PM phiplii: no wait, you meant motor controller input
06:12 PM phiplii: sigh
06:12 PM andypugh: Yes
06:12 PM * phiplii re-reads things
06:13 PM andypugh: Note: Everything I know about electronics is what I have taught myself since starting with LinuxCNC. You might want several second opinons.
06:14 PM phiplii: :)
06:14 PM phiplii: I'm a mecheng too
06:16 PM andypugh: I am no type of engineer.
06:16 PM andypugh: I am actually a physicist.
06:17 PM phiplii: near enough maths>physics>engineering
06:17 PM phiplii: they're not greater than signs...
06:17 PM phiplii: :)
06:17 PM andypugh: Oh, but I think they are :-)
06:17 PM phiplii: damnit
06:17 PM phiplii: stupid lazy arrows
06:21 PM MacGalempsy: \quit
06:22 PM phiplii: andypugh, didn't work - fixed voltage near 10v
06:22 PM phiplii: I'll build a mosfet level shifter over the weekend
06:25 PM JT-Shopp is now known as JT-Shop
06:27 PM phiplii: on the plus side, it is the first time I've been able to run my spindle at about 10k rpm :)
06:50 PM phiplii: night folks
07:01 PM Zebs: Damn, just missed him.
07:01 PM Zebs: Any Chilipeppr people here?
07:02 PM malcom2073: try #reprap, more likely there than here tbh
07:02 PM BeachBumPete: ya mean like red hot chili peppers?
07:03 PM malcom2073: BeachBumPete: Another cloud based machine control
07:03 PM BeachBumPete: meh ok sorry ;)
07:04 PM Zebs: It's actually convenient.
07:05 PM Zebs: Trying to figure out how to set positions for my tool servo.
07:11 PM Zebs: I tried there.
07:11 PM Zebs: They're violent.
07:12 PM malcom2073: You have a higher chance of finding someone who uses tinyg there, and even higher of someone who uses chilipeppr with it than here I would think heh
07:13 PM malcom2073: I've used tinyg a bit, but never chilipeppr
07:13 PM Zebs: Really, just GRBL in general.
07:14 PM malcom2073: Never used grbl besides a quick test a year or so ago, linuxcnc works so much better :P
07:14 PM Zebs: 'sokay.
07:14 PM Zebs: Thanks though.
07:16 PM CaptHindsight: Zebs: whats the chilipepper stuff?
07:17 PM CaptHindsight: yet another cnc controller?
07:17 PM CaptHindsight: YACC?
07:17 PM malcom2073: CaptHindsight: It's a web interface for arduino based controllers
07:17 PM andypugh: I use octoprint and something even nastier than GRBL, Sailfish (X3G)
07:18 PM andypugh: So, Octoprint actually sends raw step counts to the controller. But it makes parts.
07:18 PM CaptHindsight: I just hit myself with a hammer and lose interest
07:18 PM andypugh: Each to their own
07:18 PM malcom2073: andypugh: like octoprint, but where you don't control the server :P
07:19 PM CaptHindsight: I have a hard enough time getting everything into LCNC on my 3d printers
07:20 PM andypugh: So you rely on a seb link to feed the G-code to the control? That seems like a _terrible_ idea, if so.
07:20 PM andypugh: (I mean “web link” I would probably trust a “Seb link”)
07:20 PM malcom2073: Heh
07:20 PM malcom2073: You think?
07:20 PM malcom2073: :P
07:20 PM malcom2073: Ohh, they have an offline version now so you can run your own server
07:21 PM CaptHindsight: what I'd like is LCNC with SCADA
07:21 PM CaptHindsight: vs LCNC with just Classic Ladder
07:22 PM malcom2073: I'd just like a machine that I can leave for long periods of time without having to clear chips and/or oil the part :P
07:22 PM CaptHindsight: having a real high volume coolant flood does that for me
07:23 PM malcom2073: I'm getting there, need to make an enclosure around the bed
07:23 PM CaptHindsight: 1-2gal/min does the trick
07:23 PM malcom2073: err table
07:23 PM malcom2073: I know a couple of people with 3d printer "farms" that they have a SCADA like interface to, doubt it's standards compliant, but it's cool nonetheless
07:24 PM CaptHindsight: sometimes I have 4-5 gal of coolant on the table and tubs
07:24 PM CaptHindsight: when it's full of chips
07:24 PM Tom_L: CaptHindsight, may not be as bad as initially thought
07:24 PM malcom2073: I have a coolant pump and tank inside the mill, jsut need to get it plumbed and finish an enclosure so it doesn't mess everywhere
07:24 PM Tom_L: first glance it blew off the traces on my ssr board
07:24 PM CaptHindsight: malcom2073: shower curtain :)
07:24 PM Tom_L: so maybe the ssr decided to finally give up
07:25 PM CaptHindsight: yeah coincidence
07:25 PM malcom2073: CaptHindsight: Haha, would work.
07:25 PM Tom_L: i hope
07:25 PM Tom_L: further testing needed
07:25 PM CaptHindsight: i didn't see much on the boards that would blow unless they got overvolted somehow
07:26 PM CaptHindsight: I had to add a curtain at times when working with tall parts
07:26 PM Tom_L: i just took a quick look, i'll "investigate" when i have more time
07:26 PM CaptHindsight: the sides around my tables are only ~12" high
07:27 PM malcom2073: That's about how high I'm thinking of doing mine, I like the shower curtain idea, put magnets on the top of the wall, so you can "clip" the curtain in as needed
07:27 PM CaptHindsight: my Z is ~15"
07:27 PM CaptHindsight: or 18"
07:27 PM malcom2073: Heh
07:27 PM malcom2073: Mine is 5
07:27 PM malcom2073: But it's a knee mill
07:28 PM CaptHindsight: I don't use coolant with my Bridgeport
07:28 PM CaptHindsight: maybe just a spray bottle
07:28 PM malcom2073: That's what I have now
07:28 PM malcom2073: just a spritz bottle
07:29 PM malcom2073: But it has provisions for flood coolant, so why not
07:29 PM CaptHindsight: some days i can't stand to use the CNC
07:29 PM CaptHindsight: the sound of the hydraulic pump and spindle motor fan drives me nuts
07:30 PM CaptHindsight: and the coolant pump
07:30 PM malcom2073: That loud?
07:30 PM CaptHindsight: it's just become annoying, the constant hum
07:31 PM CaptHindsight: it's so nice to just have spindle and cutting sounds on the manual mill or lathe
07:32 PM CaptHindsight: I have a CNC shop down the hall from me that runs near 24/7 with maybe 20 machines
07:32 PM malcom2073: Heh, lights out operations
07:32 PM CaptHindsight: I can hear their pumps running all the time
07:32 PM malcom2073: I can see how that would get annoying
07:33 PM CaptHindsight: like a water pumping station
07:33 PM CaptHindsight: so I keep the back door closed
07:33 PM CaptHindsight: then I fire mine up and the noise is back
07:35 PM CaptHindsight: https://www.youtube.com/watch?v=guHGpOzDa9A minus the cavitation
07:35 PM CaptHindsight: mine are a bit more higher pitched
07:36 PM malcom2073: Heh
07:38 PM CaptHindsight: https://youtu.be/G1mOt6R3bJw?t=52s 3rd harmonic
07:38 PM CaptHindsight: ah here it is https://youtu.be/G1mOt6R3bJw?t=2m20s
07:39 PM CaptHindsight: turn the volume up :)
07:40 PM CaptHindsight: I need to rework the pumps
07:40 PM CaptHindsight: no reason they should be that annoying
07:43 PM CaptHindsight: http://openscada.org/
07:43 PM CaptHindsight: malcom2073: why reinvent vs just add on to ^^^ for repraps?
07:44 PM malcom2073: Reprap either means the capability to rebuild yourself, or reinvent the wheel, not sure which :P
07:44 PM malcom2073: A buddy of mine wants me to get into openscada
07:44 PM Tom_L: is it allowable to define a net: net velocity mode something here
07:45 PM Tom_L: then later address it again as: net velocity mode
07:45 PM CaptHindsight: http://www.comedi.org/ already works with LCNC
07:45 PM Tom_L: i have velocity-mode defined on 2 lines and get no error
07:46 PM Tom_L: but they both start out as net velocity-mode motion.spindle-on
07:46 PM Tom_L: but point to different things
07:46 PM CaptHindsight: wouldn't that be 2 different nets since they have 2 different names?
07:46 PM Tom_L: no, it's the same name
07:46 PM Tom_L: just typo here
07:46 PM CaptHindsight: ah
07:46 PM Tom_L: just a sec
07:47 PM Tom_itx: net velocity-mode motion.spindle-on => hm2_[HOSTMOT2](BOARD).0.pwmgen.00.enable pid.0.enable
07:47 PM Tom_itx: net velocity-mode motion.spindle-on => hm2_[HOSTMOT2](BOARD).0.gpio.039.out
07:47 PM Tom_L: the gpio goes to the ssr to enable the spindle driver
07:49 PM CaptHindsight: The same signal-name can be used in multiple net commands to connect additional pins, as long as the rules above are obeyed.
07:49 PM CaptHindsight: http://linuxcnc.org/docs/2.5/html/hal/basic_hal.html
07:49 PM Tom_L: i didn't know if they needed to be all on one line
07:49 PM CaptHindsight: that throws me at times as well
07:50 PM CaptHindsight: sometimes the order will effect things
07:50 PM Tom_L: still trying to figure if it was coincidence or if something went wrong
07:50 PM Tom_L: yeah
07:50 PM CaptHindsight: I really need to get down to the bottom of this myself
07:50 PM Tom_L: it's a mess but let me post the hal and see if you see anything odd that would cause a problem
07:50 PM CaptHindsight: too often it just works so I thank the gods and go on the next issue
07:51 PM CaptHindsight: but that is magic HAL code
07:51 PM CaptHindsight: which I don't like but then I remember that I hate writing code and do something else
07:52 PM CaptHindsight: like the hammer thing i mentioned earlier
07:52 PM CaptHindsight: or scotch
07:52 PM Tom_itx: http://tom-itx.no-ip.biz:81/~webpage/cnc/configs/screenshots/sherline.hal
07:52 PM Tom_L: that was working fine afik
07:53 PM Tom_L: 489 was the last edit
07:53 PM Tom_L: prior it was working flawless
07:54 PM Tom_L: as far as the code goes
07:54 PM Tom_L: the orient isn't tested yet
07:56 PM Tom_L: i see one goof
07:57 PM Tom_L: forgot to rename the setp pid.0 to setp pid.1 when i copied it down
07:58 PM CaptHindsight: so the configs for one PID are going to another
07:58 PM CaptHindsight: mixing PIDs :)
07:58 PM Tom_L: well they're both spindle but one is for orient and the other (pid.0.) is the normal one
07:58 PM Tom_L: neither are active at the same time
07:58 PM Tom_L: thru the mux
07:59 PM Tom_L: it would throw off the tune for sure on the pid.0
07:59 PM Tom_L: fixed btw..
08:00 PM Tom_L: reload the fix if you want
08:01 PM Tom_L: maybe i should use a regular relay instead of the ssr
08:01 PM Tom_L: it was a cheapo ssr from radio shack i got mmm probably 15 yrs ago?
08:02 PM CaptHindsight: might have just been its time
08:02 PM Tom_L: i've got another one somewhere
08:02 PM Tom_L: if i got another 15 from it i'd be happy
08:02 PM CaptHindsight: well swap it out and see if it blows then you'll know :)
08:03 PM Tom_L: thing is the ssr looks ok, but the traces are gone
08:03 PM CaptHindsight: the worst as I understand you setup is having the motor change directions at full speed
08:04 PM Tom_L: yeah i though about that
08:04 PM CaptHindsight: 90V dc motor
08:04 PM Tom_L: the inhibit on switch has a ramp up time
08:04 PM Tom_L: built in the driver
08:05 PM CaptHindsight: if the SSR is rated for 95V then maybe its just been running to close to max
08:05 PM Tom_L: could be
08:05 PM Tom_L: i have no idea what it's rated for
08:05 PM CaptHindsight: or 80V rated
08:05 PM CaptHindsight: and been lucky
08:06 PM Tom_L: wonder where i can get a beefier one that is logic switchable
08:07 PM CaptHindsight: how many amps?
08:07 PM CaptHindsight: 5V ttl levels?
08:07 PM Tom_L: it's coming from the 7i90
08:08 PM Tom_itx: https://www.newegg.com/Product/Product.aspx?Item=9SIAD4R5YW2875&ignorebbr=1&nm_mc=KNC-GoogleMKP-PC&cm_mmc=KNC-GoogleMKP-PC-_-pla-_-EC+-+Circuit+Protection-_-9SIAD4R5YW2875&gclid=EAIaIQobChMI99fvhvjN1QIVAWx-Ch1oQQwhEAQYAyABEgI2ovD_BwE&gclsrc=aw.ds
08:08 PM CaptHindsight: whats your field voltage? 24V
08:08 PM Tom_L: umm i'd have to check
08:08 PM Tom_L: it may be 10
08:09 PM Tom_L: that one may not be big enough
08:09 PM CaptHindsight: oh are you running right off the FPGA connector?
08:09 PM Tom_L: yeah
08:09 PM Tom_L: i ran out of io :D
08:10 PM CaptHindsight: those are 3V with 5V tolerance
08:10 PM Tom_L: if it's output it shouldn't matter alot
08:10 PM Tom_L: i could see overdriving it on input
08:10 PM Tom_L: if the 3v is too low, it just wouldn't turn on
08:11 PM CaptHindsight: I have some of those SSR boards
08:11 PM CaptHindsight: 5v for duinos
08:11 PM Tom_L: are they ok?
08:11 PM CaptHindsight: never used them
08:12 PM CaptHindsight: haven't gotten around to it
08:12 PM zeeshan: anyone design a conveyor before?
08:12 PM zeeshan: especiallyu one that can reverrse
08:12 PM Tom_itx: https://www.sparkfun.com/products/retired/10636
08:12 PM Tom_L: that one's 8A
08:13 PM Tom_L: the pin is just driving an led
08:13 PM CaptHindsight: http://pdf1.alldatasheet.com/datasheet-pdf/view/333500/OMRON/G3MB-202P/+23_523VLlROOcINSHhzYwa+/datasheet.pdf
08:14 PM CaptHindsight: looks like 4V minimum must operate voltage
08:15 PM CaptHindsight: zeeshan: belt or linear motor?
08:15 PM zeeshan: using chains
08:15 PM CaptHindsight: heh, putting one together as we speak
08:16 PM zeeshan: i basically have a center drive conveyor
08:16 PM zeeshan: but im thinking of putting tensioners on both sides of the center drive sprocket
08:16 PM CaptHindsight: only 14" long though with #25 chain :)
08:16 PM zeeshan: mines about 12" long with #40 chain
08:16 PM zeeshan: 4 strand
08:16 PM Tom_L: i'll probably combine that net...
08:16 PM zeeshan: im going to try to use a rosta tensioner
08:17 PM zeeshan: i like em
08:17 PM Tom_L: zeeshan... sparks few n everything.... it was awesome!
08:17 PM zeeshan: you aint living if you aint got sparks!
08:18 PM Tom_L: i hate it when you have no indication as to the problem
08:18 PM CaptHindsight: Forward voltage VF IF=20mA typical 1.2 max 1.4 V
08:19 PM CaptHindsight: Tom_L: for the Sharp SSR ^^
08:19 PM Tom_L: data sheet is unavailable atm
08:19 PM Tom_L: that might work ehh?
08:19 PM CaptHindsight: https://cdn.sparkfun.com/datasheets/Components/General%20IC/S108,208T02%20Series.pdf
08:19 PM Tom_L: too bad they discontinued it
08:20 PM CaptHindsight: well getting 20ma out of the FPGA pin might be asking too much
08:20 PM CaptHindsight: pcw_home: knows this off the top of his head
08:20 PM Tom_L: yeah i'll figure something out
08:21 PM Tom_L: i could add a card to that plug i suppose
08:21 PM Tom_L: probably be safer
08:22 PM Tom_L: every time i switch that though i gotta reverse all the logic
08:22 PM CaptHindsight: DPDT right?
08:22 PM CaptHindsight: oops SPDT
08:22 PM Tom_L: the ssr was spdt if that's how you call it
08:23 PM Tom_L: i probably don't need it really
08:23 PM Tom_L: it was just an additional 'off' to the spindle drive
08:23 PM CaptHindsight: https://www.digikey.com/products/en/relays/solid-state-relays/183?k=&pkeyword=&pv130=239&FV=a40154%2C1fc050e%2C1fc0515%2C1fc0563%2C1fc10ad%2C1fc01ca%2C1fc01cb%2C1fc01cc%2C1fc01cd%2C1fc0218%2C1fc021c%2C1fc021d%2C1fc021e%2C1fc027a%2C1fc18f2%2C1fc18f3%2C1fc18fe%2C1fc028d%2C1fc028e%2C1fc1af6%2C1fc1b1e%2C1fc1b1f%2C1fc1c97%2C1fc1c98%2C1fc1d16%2C1fc1d58%2C1fc1d93%2C1f140000%2Cffe000b7&mnonly=0&ColumnSort=1000011&page=1&stock=1&quantity=0&ptm=0&
08:23 PM CaptHindsight: fid=0&pageSize=25
08:24 PM CaptHindsight: wrong link
08:25 PM Tom_L: a little driver opto might do the trick
08:25 PM Tom_L: was hoping to find a drop in solution
08:25 PM Tom_L: i'm all out of board etchant
08:29 PM CaptHindsight: https://tinyurl.com/y7s9b9o7
08:29 PM CaptHindsight: all these are through hole and switch at 3V
08:34 PM CaptHindsight: http://www.mouser.com/ProductDetail/Sensata/CMX100D10/?qs=ftmCDQnBrlMvJvu9NkGZVg%3d%3d
08:34 PM CaptHindsight: 3-10V input, 10A 100V DC max out
08:34 PM CaptHindsight: but SPST
08:35 PM CaptHindsight: getting 3V in is the hard part
08:35 PM CaptHindsight: level shift to 5V or more and the choices go way up
08:36 PM CaptHindsight: zeeshan: what temp range?
08:37 PM CaptHindsight: mine runs at 400F for days
08:37 PM CaptHindsight: idler gear with spring
08:47 PM CaptHindsight: zeeshan: mine runs a carriage with cam bearings on square linear rods
08:48 PM CaptHindsight: I can adjust the tension by moving the idler gear
08:56 PM Zebs: CaptHindsight, it is indeed a CNC controller, the main thing is interfacing with GRBL.
08:56 PM Zebs: Need to figure out how to set servo positions.
08:59 PM Tom_L: try asking in #robotics
09:05 PM CaptHindsight: I have to try getting openSCADA to talk to Linuxcnc over Modbus
09:07 PM CaptHindsight: looks like LCNC Modbus has been tested with slaves only
09:07 PM jdh: seems reasonable
09:08 PM CaptHindsight: http://wiki.linuxcnc.org/cgi-bin/wiki.pl?ClassicLadder_Ver_7.124#Modbus
09:08 PM CaptHindsight: I have not tested this nor have I tested the TCP modbus master.
09:08 PM CaptHindsight: this could get interesting quickly if it works without too much work
09:09 PM codepython7771: I am trying to build a water table for my cnc so that I can screw it on and cut cf. Using a L shape welded to a rectangular metal plate of 24" x 18". I was thinking of using Alum Sheet 5052 H32 and a angle 6063 T52 - any recommendations for this?
09:11 PM Zebs: Anyways, yeah, just need to set the positions of the Z axis.
09:19 PM CaptHindsight: codepython7771: whatever is available and lowest cost
09:20 PM CaptHindsight: t-slot, angle
09:20 PM CaptHindsight: screws and silicone caulk if you don't have a TIG
09:21 PM codepython7771: CaptHindsight: the cost seems roughly $100 for that material - size 15" x 24"
09:21 PM CaptHindsight: what metal source?
09:21 PM codepython7771: onlinemetals
09:22 PM CaptHindsight: 24 x 18 aluminum sheet 18ga-22ga will be much less
09:22 PM CaptHindsight: yeah they are about 2x what I pay at metal supermarkets
09:22 PM CaptHindsight: but they might not local
09:23 PM codepython7771: CaptHindsight: http://www.onlinemetals.com/merchant.cfm?pid=18002&step=4&showunits=mm&id=240&top_cat=0
09:23 PM codepython7771: .25" is what I was hoping touse
09:23 PM CaptHindsight: with metal supermarkets you generally pay 60% of the online price when you go in person
09:24 PM CaptHindsight: 1/4" is overkill for a water pan
09:24 PM CaptHindsight: half that will be plenty
09:24 PM codepython7771: CaptHindsight: i want to use it as a base too, just in case my cf cuts shoot down - also i want rigidity?
09:25 PM CaptHindsight: do you have a TIG?
09:25 PM codepython7771: CaptHindsight: The play/wobble in Alum sheets is creating trouble for me - Last one had a flex in the iddle
09:25 PM codepython7771: CaptHindsight: I asked a local shop to weld it for me
09:25 PM CaptHindsight: ah so more expense
09:26 PM CaptHindsight: yeah then go heavy and be done with it
09:26 PM CaptHindsight: or steel and coat with epoxy
09:26 PM codepython7771: is stainless steel cheaper?
09:27 PM CaptHindsight: nope
09:27 PM CaptHindsight: SS is not cheap
09:27 PM CaptHindsight: will be 3-4x
09:27 PM codepython7771: wow
09:28 PM codepython7771: CaptHindsight: I am going to try MDF first, sealing it for water is painful
09:29 PM CaptHindsight: STAINLESS SHEET 304 (0.078 (14Ga) ST 304 - #4 SHEET) 18 x 24 Material Cost: $62.87
09:30 PM CaptHindsight: 0.125 thick will be ~$75
09:31 PM CaptHindsight: codepython7771: polyester resin for boats at Home Depot is $30/gal
09:31 PM CaptHindsight: that will seal up the MDF
09:31 PM CaptHindsight: lay it 1/4" thick
09:32 PM jdh: how to you hold the CF in the bath?
09:32 PM CaptHindsight: http://www.homedepot.com/p/3M-Bondo-1-qt-All-Purpose-Fiberglass-Resin-20122/202077790 $15/quart
09:35 PM CaptHindsight: STEEL-COLD ROLLED SHEET A1008 - CQ(0.120 (11 Ga) ST CQ SHEET) 18 x 24 $44.40
10:40 PM Zebs: Anyone recall the GCode to set zero position.
10:40 PM Zebs: ?
10:49 PM Tom_L: http://linuxcnc.org/docs/2.7/html/gcode/g-code.html
11:03 PM codepython7771: CaptHindsight: Thanks. I've neer used fiberglass - would love to try it
11:05 PM codepython7771: CaptHindsight: its going to be hard to make flat surface from that resin :)
11:08 PM Tom_L: why?
11:09 PM Tom_L: that's what moulds and mould release is for
11:19 PM codepython7771: Tom_L: I'm trying to build a flat water container to cut cf
11:36 PM CaptHindsight: the polyester resin is self leveling
11:36 PM CaptHindsight: if you heat it a few (20-30c) over room temp the viscosity will be even lower