#linuxcnc Logs
Aug 08 2019
#linuxcnc Calendar
01:58 AM Deejay: moin
05:09 AM Tom_L: morning
05:09 AM jthornton: morning
05:09 AM Tom_L: rain on the way
05:10 AM jthornton: rained yesterday and chance the rest of the week
06:26 AM _unreal_: any of you guys ever heard of this https://www.estlcam.de/
06:26 AM _unreal_: ?
06:27 AM Loetmichel: _unreal_: heard: yes. used: nope
06:27 AM Loetmichel: also belive the programmer is dead so its not supported any more
06:28 AM XXCoder: dead??
06:28 AM XXCoder: ehat happened?
06:28 AM Loetmichel: i may have mixed taht up
06:28 AM _unreal_: dead?
06:28 AM _unreal_: what are you talking about
06:28 AM XXCoder: last update is july 2019
06:28 AM Loetmichel: something about he was old and simply died of old age a while ago
06:28 AM _unreal_: latest version was just released
06:28 AM Loetmichel: as i said i might mix that up
06:29 AM _unreal_: and the version log is VERY active
06:29 AM Loetmichel: a decade ago or so
06:29 AM Loetmichel: or someone picked up the software
06:29 AM XXCoder: i like that one, but hes turning it into machine controller also and I dont like it
06:29 AM XXCoder: i dont want to pay for cam AND cnc controller when I have linuxcnc
06:36 AM _unreal_: I like that knife holder https://www.estlcam.de/projekte.php
06:37 AM XXCoder: yeah its fun
06:37 AM XXCoder: I decided against it since it has exposed blade edges
06:39 AM * Loetmichel is printing small boats again... -> https://www.youtube.com/watch?v=uiRfaniE90Q ... lets see if thats better than the last one: http://www.cyrom.org/palbum/main.php?g2_itemId=17451&g2_imageViewsIndex=1 ... no wonder though if the teflon liner in the hotend looks like THAT though: http://www.cyrom.org/palbum/main.php?g2_itemId=17454&g2_imageViewsIndex=1
06:39 AM Loetmichel: ups, wrong paste
06:40 AM * Loetmichel just finished the new benchy after changing the throat/liner on my A8... MUUUCH better (same gcode, same PETG material) -> http://www.cyrom.org/palbum/main.php?g2_itemId=17457&g2_imageViewsIndex=1
06:42 AM _unreal_: so last night I re-leveled my PCB milling block
06:42 AM sensille: Loetmichel: where do those small pauses come from?
06:43 AM _unreal_: OMG what a difference now that I aligned the machine better
06:43 AM Loetmichel: sensille: probably the dirt cheap SDcard
06:43 AM Loetmichel: slow as melasses
06:43 AM _unreal_: pauses
06:43 AM _unreal_: ?
06:44 AM Loetmichel: _unreal_: he meant im my video of the print
06:49 AM _unreal_: the only pausing I see would be in direction changing? ramp speed? could be SD card as you say but I would not put settings past it.
06:49 AM Loetmichel: _unreal_: its running at 5000 accel for all axes
06:49 AM _unreal_: hum
06:49 AM Loetmichel: i doubt its ramp speed :-)
06:50 AM sensille: can also be mcu too slow
06:50 AM sensille: or marlin too stupid
06:51 AM Loetmichel: 5000mm/sec^2 that is
06:51 AM Loetmichel: sensille: yeah, all of those
07:33 AM _unreal_: me likes ESTLcam
08:32 AM pingufan: Hello. I am meanwhile very close to upgrading my CNC mill. It currently has a 2-stage belt drive and can reach 13000 rpm on the spindle end. And it is horribly noisy.
08:33 AM pingufan: I think about buying a brushless direct drive with ER11 chuck and inverter. I found one which has an acceptable price.
08:35 AM pingufan: Here is the link: https://www.aliexpress.com/item/32720569421.html
08:35 AM _unreal_: pingufan, how big is your cnc machine
08:35 AM pingufan: Sadly they don't mention the motor weight.
08:36 AM pingufan: It is an old GravoGraph VX.
08:36 AM pingufan: Extremely heavy and therefore precise.
08:37 AM pingufan: What do you estimate? Weight of this spindle motor?
08:37 AM _unreal_: pingufan, could you give a link to a photo? I looked that up and got a bunch of different versions
08:37 AM gregcnc: nameplate says 3.5kg
08:37 AM pingufan: Of my mill?
08:38 AM pingufan: Too heavy then to be moved along Z
08:39 AM _unreal_: ugh...
08:39 AM _unreal_: can you post a link to your machine or a photo of the one you have and what is the SIZE of it
08:40 AM _unreal_: no one here can give you any help at all with out knowing what you have
08:40 AM gregcnc: don't you have google there?
08:40 AM _unreal_: so far you have only given a name that pulls up several versions
08:41 AM pingufan: Moment...
08:41 AM _unreal_: gregcnc, I have found several versions all with the same name GravoGraph VX
08:41 AM _unreal_: and very different sizes and bases etc...
08:42 AM pingufan: Here is a picture: http://www.hantsch.co.at/_temp/VX.jpg
08:42 AM gregcnc: oddly looks like all the other VX.
08:43 AM gregcnc: if you search you will find drawings for those spindles
08:44 AM pingufan: What I need is: 500W, 4000...24000 rpm, low weight.
08:44 AM Loetmichel: pingufan: try the watercooled 800W spindles from china
08:44 AM pingufan: But I don't like brushed motors. At such high rpm they don't last long, I think.
08:45 AM pingufan: Please, no watercooling if possible.
08:45 AM _unreal_: gregcnc, thats very different
08:45 AM _unreal_: https://www.picclickimg.com/d/l400/pict/323314789576_/Fr%C3%A4smaschine-Gravograph-VX-Defekt-f%C3%BCr-Bastler.jpg for example
08:45 AM Loetmichel: why not? its quieter AND lighter than the aircooled version
08:45 AM _unreal_: Thats a different sized machine
08:45 AM Loetmichel: and the pump is not that much of a hassle
08:45 AM gregcnc: same thign different table
08:46 AM pingufan: No. It is exactly my machine. Simply remove the high table
08:46 AM gregcnc: https://www.ebay.com/i/201565959081
08:46 AM _unreal_: pingufan, your not going to get HIGH power in a small package with out a lot ofheat
08:46 AM _unreal_: hence the water cooling
08:47 AM pingufan: Sure. But I currently have 120-150 Watts. If I doule that, it is more than enough.
08:47 AM _unreal_: pingufan, the buttons are different
08:47 AM pingufan: And then air cooling should work easily.
08:48 AM pingufan: I made the entire electronics by myself from scratch. I removed the original buttons.
08:48 AM Loetmichel: pingufan: https://www.ebay.de/itm/800W-CNC-Spindle-Motor-110V-Water-Cooled-1-5KW-VFD-Inverter-Mount-Bracket-Pump/201356969771?hash=item2ee1cf872b:g:c98AAOSwpp1cwEiA
08:48 AM Loetmichel: even comes with a pump
08:48 AM Loetmichel: just add a 5 gallon jug of water-> done
08:48 AM pingufan: How big is thios controller?
08:48 AM Loetmichel: the walls of the jug can provide enough cooling
08:53 AM pingufan: I would prefer to put it (again) into my machine's base.
08:53 AM pingufan: But this one looks big.
08:53 AM pingufan: Well, I still prefer air cooled.
08:53 AM _unreal_: alternative speed controller https://www.amazon.com/gp/product/B0789NKJZM/ref=ppx_yo_dt_b_asin_title_o07_s00?ie=UTF8&psc=1
08:53 AM _unreal_: takes manual or PWM
08:53 AM Loetmichel: pingufan: problem is that the 400W DC motors are garbage
08:53 AM gregcnc: that will not drive an induction motor
08:53 AM _unreal_: that controller I just linked works for ac and DC
08:53 AM pingufan: I don't want to buy garbage.
08:53 AM _unreal_: oh induction
08:53 AM pingufan: Also, they don't exceed 12000 rpm.
08:53 AM gregcnc: those spindle are induction
08:53 AM Loetmichel: the WAY to much overhang on the collet until the first bearing is there, they have only very thin shafts so the collet easy bends out of place, they are loud and pwoerless
08:53 AM net|: https://tsubakimoto.com/power-transmission/linear-actuator/zip-chain-actuator/zca/
08:53 AM Loetmichel: IMHO the lowest useful spindle are those watercooled or air cooled 800W things
08:53 AM Loetmichel: wit VFD
08:53 AM pingufan: This looks ok, but I also need a vfd for it. https://www.ebay.com/i/201565959081
08:53 AM Elmo40: 800W is small
08:54 AM pingufan: maybe 2kg, but not more.
08:55 AM pingufan: Less is better.
08:55 AM Loetmichel: https://www.youtube.com/watch?v=ZwAizto843U
08:55 AM _unreal_: is your Z direct drive is it belt driven? geared? to actuate the Z?
08:55 AM pingufan: This is what I expect.
08:55 AM _unreal_: and what is the oz/in of the motor
08:56 AM pingufan: Can move slower, but I need high rpm for 1mm end-mills.
08:56 AM Loetmichel: http://www.cyrom.org/palbum/main.php?g2_itemId=17088&g2_imageViewsIndex=1 <-there you can see the 10l bucket with the pump inside on the lowest rack
08:58 AM pingufan: I think 250W is almost perfect. I have now 120Watts (estimated) and a 2-stage belt drive. This also is wasting power. So 250W should be plenty enough.
08:58 AM gregcnc: https://www.ebay.com/itm/263174081107
08:59 AM pingufan: https://www.ebay.com/itm/250w-24000rpm-ER8-Brushless-42mm-spindle-motor-MACH3-driver-CNC-spindle-kits/263174089090?_trkparms=aid%3D222007%26algo%3DSIM.MBE%26ao%3D2%26asc%3D20160323102634%26meid%3Df03b037926534ab681dbdfd2dde969f5%26pid%3D100623%26rk%3D2%26rkt%3D6%26sd%3D263174081107%26itm%3D263174089090%26pg%3D2047675&_trksid=p2047675.c100623.m-1
08:59 AM pingufan: I only need a manually set VFD and a switch to turn it on/off from linuxcnc.
08:59 AM gregcnc: i doubt you use that much power engraving?
09:00 AM Loetmichel: pingufan: the 250W are probably ok
09:00 AM Loetmichel: looks fine
09:01 AM pingufan: I think so. But which VFD should I use with it? Poti for speed setting, relay input to turn spindle on/off.
09:01 AM pingufan: That's all I need.
09:01 AM Loetmichel: that set already HAS a driver
09:01 AM pingufan: This MACH controller again needs a PSU and is too much.
09:01 AM Loetmichel: you dont need a VFD with that
09:01 AM Loetmichel: just a brick PSU
09:02 AM Loetmichel: 36V 10 or so
09:02 AM Loetmichel: not that expensive
09:02 AM pingufan: And I need ER11 collet.
09:02 AM pingufan: Ok, I have to leave urgently, forgot that I have a meeting soon. C U tomorrow.
09:02 AM Loetmichel: then you have to probably use a 800W spindle
09:03 AM Loetmichel: thats the smallest io know with ER11
09:07 AM _unreal_: my spindle is an er11
09:08 AM _unreal_: and its TINY
09:08 AM _unreal_: but its brushed
09:09 AM Loetmichel: _unreal_: the smalles brushless
09:09 AM Loetmichel: those 400W brushed motors are crap
09:09 AM Loetmichel: not because of the motor but because of the stickout of the ER11 over the motor shaft/bearings
09:09 AM Loetmichel: they cant take ANY side load
09:10 AM _unreal_: could be
09:11 AM _unreal_: my machine cant produce enough force to bend it I dont think?
09:11 AM _unreal_: though I've had NOOOOO problem bending over 3/16 drill bits
09:11 AM _unreal_: OOPS
09:12 AM gregcnc: ER11 is going to be the limitation for him
09:12 AM Loetmichel: _unreal_: like this? _> http://www.cyrom.org/palbum/main.php?g2_itemId=14784&g2_imageViewsIndex=1
09:12 AM Loetmichel: single handed in a battery drill ;)
09:12 AM Loetmichel: and thats a 5mm or 6mm drill
09:12 AM Loetmichel: aka 1/8"
09:16 AM gregcnc: .125*25.4=3.175mm
09:39 AM Loetmichel: ahem
09:39 AM Loetmichel: 1/4"
09:39 AM Loetmichel: my bad ;)
09:39 AM Loetmichel: <- is german, converting metric to imperial isnt my second nature ;)
09:40 AM gregcnc: leave it up to us who are stuck with having too
09:42 AM _unreal_: Loetmichel, exactly
09:43 AM _unreal_: a cordless drill can produce a LOT more torque then most small spindles if its in first gear
09:44 AM Loetmichel: _unreal_: problem with weak shafts on CNC spindles is that tungsten carbide mill bits dont look kindly on runout or chattering while milling
09:45 AM Loetmichel: you dont even need side loads by the CNC steppers, the chatter from cutting is enough to break the carbide bits
09:45 AM Loetmichel: chatter from cutting with a weak spindle shaft i mean
09:46 AM _unreal_: ya
09:46 AM _unreal_: trust me I KNOW :)
09:46 AM _unreal_: OMG I'm still so WOWED at the difference with my cnc
09:46 AM _unreal_: now that I've really trued it up
09:46 AM _unreal_: very square or at least as square as its ever going to be
09:47 AM _unreal_: I used a 4 flute 3/16ths end mill last night and I can see the marks but I sure cant feel it
09:48 AM _unreal_: very flat
09:48 AM * Loetmichel uses a 20mm router bit to face off the vacuum table...
09:48 AM Loetmichel: you cant feel the marks either
09:49 AM Loetmichel: not even with a finger nail
09:49 AM _unreal_: My bad boy https://drive.google.com/open?id=1D-k13xqrv-9Z-6ok8anqo4-VMt7iCLG4
09:50 AM _unreal_: I love getting paid by work to make stuff https://drive.google.com/open?id=1D35kqiMnAK0GH_AaEDkLZkmSJAxKPVKH
09:50 AM Loetmichel: http://www.cyrom.org/palbum/main.php?g2_itemId=17088&g2_imageViewsIndex=1 <- freshly glued on and faced off 8mm thick micarta(sp?) board
09:50 AM _unreal_: https://drive.google.com/open?id=1DGSfzLhsRSR3ifz4o1mIDvj3MzQsHgmc
09:50 AM Loetmichel: (paper in phenolic resin)
09:51 AM _unreal_: huh? <Loetmichel> (paper in phenolic resin)
09:51 AM Loetmichel: the vacuum table spoilboard
09:51 AM _unreal_: oh
09:52 AM Loetmichel: its made of "micarta" a.k.a paper in phenolic resin
09:52 AM _unreal_: whats with all the cracked plexy glass guards ;)
09:52 AM Loetmichel: sometimes stuff gets flying
09:53 AM _unreal_: OMG I want your lathe
09:53 AM _unreal_: one of the only tools I dont have
09:53 AM Loetmichel: http://www.cyrom.org/palbum/main.php?g2_itemId=17171&g2_imageViewsIndex=1 <- thats how the 20mm router bit looks in use ;)
09:53 AM Loetmichel: thats my private lathe
09:54 AM Loetmichel: the "pocket one"
09:55 AM Loetmichel: http://www.cyrom.org/palbum/main.php?g2_itemId=17295&g2_imageViewsIndex=1 <-like i said: sometimes i do "ballsy" stuff
09:55 AM Loetmichel: thats a 80mm sawblade cutting an aluminium block to size ;)
09:55 AM Loetmichel: (and that block is only fixed with superglue ;)
09:56 AM Loetmichel: the lathe is REALLY small though. https://www.youtube.com/watch?v=4n0rmiiDVD4
09:56 AM Loetmichel: (no, my hands are pretty normal sized)
10:00 AM _unreal_: that blade looks scary
10:02 AM Loetmichel: _unreal_: it WAS scary
10:02 AM Loetmichel: especially if you see how its fixed to the arbor:
10:02 AM _unreal_: I'm guessing you did several passes?
10:04 AM Loetmichel: http://www.cyrom.org/palbum/main.php?g2_itemId=5471
10:04 AM Loetmichel: http://www.cyrom.org/palbum/main.php?g2_itemId=5474
10:05 AM Loetmichel: the underside of the arbor has about 0,2mm steel to hold the blade :-)
10:05 AM Loetmichel: yes i ded
10:05 AM Loetmichel: did
10:09 AM Loetmichel: but thats where the cracks in the Guard PMMA comes from ;)
10:09 AM Loetmichel: -s
10:09 AM Loetmichel: when things suddenly decide to get flying
10:10 AM Connor: Hey guys. 5um or 1um for cross slide on lathe (manual).
10:10 AM * Loetmichel is sometimes either stupid or ballsy, depending on whom you ask... -> https://www.youtube.com/watch?v=1Ym4Y9HEm4s
10:10 AM Loetmichel: :-)
10:10 AM Connor: Guy selling me DRO's saying that 5um is more than enough.. But, I though on the cross slide, since it's double what you want.. 1um might be good.
10:11 AM Connor: plus, cumulative error and all.
10:25 AM skunkworks: https://www.youtube.com/watch?v=PJRh1FB_n0Q
10:25 AM skunkworks: Connor: that is about 2 tenths? Hmm.. I would almost say that would be enough...
10:26 AM skunkworks: maybe on the edge..
10:29 AM Rab: Loetmichel, how thick is that saw blade? How many RPM, and how many watts is your spindle rated?
10:37 AM Rab: I see 80 x something x 24P printed on the blade, can't quite make it out.
10:38 AM _unreal_: wtf... walked out to the kitchen to make food and got an instant head ache
10:46 AM _unreal_: OMG.... make it stop
10:47 AM Connor: He saying most lathes can't hold more than 0.005" I call BS on that.
10:49 AM Connor: "how many 0 can you read from lathe, don't be fool by 1um, companies making parts for spacex are 100% fine with 5um. many people suffer from 1um, you can test 1um out. If your lathe can't read 1um, why do you need 1um scale. If the rims on your car are 16", why do you need 18" tire. Good manual lathe and Bridgeport are accurate within 0.005, 5um is half of 0.005"."
10:51 AM Loetmichel: Rab: around 2mm
10:51 AM Loetmichel: and 24krpm, 800W spindle ;)
10:53 AM Rab: Loetmichel, what was depth of cut on each pass? And were you climb or conventional cutting?
10:54 AM Loetmichel: climb cutting, cant remember how much doc,less than 0,2mm IIRC
10:56 AM Rab: Loetmichel, interesting, thanks. Were you saying it escaped its surly bonds, or was the cut successful?
11:09 AM gregcnc: you can't reliably make parts to 5um with a 5um readout
11:11 AM gregcnc: uh .005" = 127um , breakdown in decimal points I think
11:12 AM gregcnc: .0005" is often within reach on a machine in decent condition
11:12 AM gregcnc: Connor ^
11:19 AM Rab: '5um is half of 0.005"' what
11:19 AM Rab: Trying to think of what unit they could mean. .0025 in is 0.0635 mm, not exactly a round number.
11:20 AM gregcnc: 5um is .0002" or "half" of .0005"
11:33 AM _unreal_: finally my headache is starting to let up a bit
12:01 PM Connor: My response... Well.. With 5um, the effective cross slide resolution on the cross slide is 0.0004" which is almost 1/2 thou.. With 1um, Effective cross slide resolution would be 0.0001" Combine that with cumulative error effects, 1um scales are desirable on the cross slide.. I guess I can always purchase a 1um somewhere else.. I was just checking.
12:02 PM Connor: I had just simply asked if he had 1um scales!
12:39 PM CaptHindsight: if you go usb-micron you can watch the lathe change size over temperature changes during the day
12:39 PM CaptHindsight: usb-/sub
12:40 PM Tom_itx: i had to adjust the okuma over a day's run a little
12:45 PM Tom_itx is now known as Tom_L
12:52 PM rtagro: Hi, I want to connect my Ramps board to linuxcnc, Ive found a link, https://github.com/cdsteinkuehler/LinuxCNC-RepRap
12:53 PM rtagro: does this reqire me to setup pin for parrel port on the Ramps baord sheild ?
01:11 PM Rab: rtagro, sure seems like it!
01:20 PM CaptHindsight: does the *dunio just pass through Step and Dir when connecdted to a PC LPT port?
01:21 PM CaptHindsight: been working the Rpi3 and 4 the past few days
01:22 PM CaptHindsight: might just be too crappy for anything I can warranty to customers
01:26 PM Rab: My business partner got a wild hair to sell a product based on a RPi in a box, a few years back. I made clear that I couldn't be involved. Recent activity of the RPi team wouldn't encourage me.
01:28 PM rtagro: has anyone use linuxcnc on ramps board ? if you can share your experience, be much appericated
01:29 PM Rab: Instead we put a third-party STM32-based embedded datalogger in the box (simple serial logging application). It was very reliable.
01:29 PM CaptHindsight: rtagro: ramps is just an IO board for the arduino with lots of connectors and mostly passives
01:30 PM Rab: Zero SD card corruption across the deployment.
01:30 PM CaptHindsight: rtagro: you can buy a $10 breakout board a dn control steppers from the LPT of a PC
01:30 PM CaptHindsight: Rab: yes, Rpi USB boot has to be set in the OTP so you can't change it back and they don't use u-boot
01:31 PM Rab: CaptHindsight, that's not entirely accurate. RAMPS is also a carrier for stepper drivers, and I'm guessing that's the part rtagro wants to use.
01:31 PM CaptHindsight: to be of any real use we'd have to finish up the u-boot port
01:32 PM CaptHindsight: yes, connectors for the stepper drivers
01:33 PM CaptHindsight: use a bunch of jumpers from BOB to RAMPS
01:36 PM rtagro: Rab, CaptHindsight, i have a bunch of these board lying around, im planing on using it with my tb6560 drivers, pick up mini mill and i wanna get linuxcnc connected to board,
01:39 PM rtagro: the link i provided, theres schematic on hot to wire up parrallel to Arduino, i just need to figure out how to read it lol
01:42 PM Rab: rtagro, if you're using standalone drivers like the TB6560, you don't need the RAMPS boards at all.
01:43 PM Rab: You would ideally use a parallel port BOB like CaptHindsight suggested.
01:44 PM Rab: Here's a cheap one: https://www.ebay.com/itm/152833919438
01:45 PM Rab: You can ignore the USB and Mach3 part. The BOB just runs the parport signals through level shifters, and the screw terminal outputs wire straight to your TB6560.
02:03 PM rtagro: Rab, I orderd BOB from aliexpress, its been over a month and havent arrive yet, mean while i would like to experiement with Arduino and ramps board
02:05 PM Rab: rtagro, the Arduino will not interoperate with LinuxCNC, so you can eliminate that component.
02:06 PM rtagro: but that link i show above is using arduino
02:06 PM Rab: Do you want to experiment with the stepper drivers on the RAMPS board? Or are you hoping to use the RAMPS board to interface your PC parallel port with the TB6560, and control the TB6560 with LinuxCNC?
02:08 PM Rab: I believe that schematic is meant to show the connector which would plug into an Arduino. I do not believe an Arduino is actually involved; the parallel port is wired to the connector in its place.
02:12 PM rtagro: Rab, yes im hoping to use ramps board to interface parrallel port with the tb6560 and control it with linuxcnc
02:12 PM Rab: rtagro, I do not believe the RAMPS board will serve any useful function for you.
02:13 PM rtagro: Rab, ramps board is just a sheild
02:13 PM Tom_L: hey andypugh
02:13 PM Tom_L: how was the meet?
02:13 PM andypugh: It was good, as always.
02:13 PM Tom_L: any pics etc?
02:14 PM andypugh: Someone brought a C1 lathe. One day later it was a CNC lathe.
02:14 PM Rab: It doesn't have even rudimentary level-shifting circuitry, or a parallel port connector, or anything else that would help interface parport to TB6560.
02:14 PM andypugh: I only took one photo. Other might have taken more.
02:15 PM Tom_L: someone here was asking if there were any the other day
02:15 PM andypugh: https://photos.app.goo.gl/GdfBXtVjRVyWPkB16
02:15 PM Tom_L: cool
02:15 PM andypugh: I did take a random video too: https://photos.app.goo.gl/bfmjrfWNmP2yDKTD6
02:16 PM rtagro: Rab, that why theres the arduino for
02:16 PM Tom_L: so do you think the Rpi4 is a contender?
02:16 PM Rab: rtagro, the Arduino will definitely not help.
02:17 PM andypugh: I would like to try the Pi4 with a heatsink. While it worked it was very good. But it seemed to lock up every now and again.
02:17 PM Tom_L: runs hot?
02:17 PM andypugh: Famously so.
02:17 PM rtagro: Rab, the link shows the schematic to wire parrallel port to arduino
02:17 PM andypugh: Finger-on-top hot, probably not _actually_ hot.
02:17 PM Rab: andypugh, I've heard even a cooling fan without a heatsink makes a big difference.
02:19 PM Rab: rtagro, I believe you are misinterpreting the schematic, and I encourage you to email repo owner cdsteinkuehler for clarification.
02:21 PM rtagro: Rab, thats reprap to work on linux cnc
02:22 PM andypugh: What’s the argument here?
02:22 PM Rab: rtagro, right, LinuxCNC *instead of* Arduino.
02:22 PM Tom_L: andy, he wants to hook a ramps board up to a parallel port to run linuxcnc
02:22 PM andypugh: Hmmm
02:23 PM andypugh: The CRAMPS fits to a Beaglebone running LinuxCNC.
02:24 PM andypugh: The RAMPS fits to an Arduino, and then LinuxCNC is not involved.
02:24 PM andypugh: Pico-systems sell the CRAMPS http://pico-systems.com/osc2.5/catalog/product_info.php?products_id=1
02:25 PM Rab: <rtagro> Hi, I want to connect my Ramps board to linuxcnc, Ive found a link, https://github.com/cdsteinkuehler/LinuxCNC-RepRap
02:25 PM andypugh: Neither connect to a parallel port.
02:26 PM rtagro: https://github.com/grbl/grbl
02:26 PM andypugh: Well, not normally <he back-pedals, having read the description…>
02:28 PM andypugh: I suppose that you could use LinuxCNC/parport wired in to the Arduino pinout to control the stepper drivers.
02:28 PM andypugh: He seems to be using the RAMPS as a breakout to Pololu drivers.
02:29 PM andypugh: This might make sense if you already have a RAMPS.
02:29 PM Rab: <rtagro> Rab, yes im hoping to use ramps board to interface parrallel port with the tb6560 and control it with linuxcnc
02:29 PM Rab: <Rab> rtagro, I do not believe the RAMPS board will serve any useful function for you.
02:30 PM rtagro: Rab, https://www.youtube.com/watch?v=ftTMV4TGb74
02:31 PM andypugh: I agree. P-Port to RAMPS to tb6560 makes little sense.
02:31 PM andypugh: P-port-RAMPS-pololu might make some sense, if you have the TAMPS + Pololu.
02:32 PM Rab: rtagro, I believe that video describes using an Arduino to control a CNC machine which is wired to connect to a parallel port, which is rather different from the scenario you've described.
02:34 PM rtagro: Rab, i apperciate your feed back, but im here to find out if anyone in linux cnc community have use it, since your lack of knowlegege i prefer you do you keep your opion to urself
02:35 PM rtagro: <Rab> rtagro, the Arduino will definitely not help ?
02:35 PM Tom_L: nobody here that i'm aware of has.
02:36 PM Rab: rtagro, I agree that I cannot help you. But I wish you good luck and success.
02:37 PM _unreal_: sigh....
02:38 PM _unreal_: tomorrow My brush strip shows up. so I can make a dust shoe with skirt for the spindle. Will be nice to rid it of dust
02:39 PM _unreal_: the little vacuum is a little louder then I'd like it to be but it uses 12v 4amps. I cant argu with the low power consumption
02:40 PM Rab: _unreal_, I bought this one from Home Depot, but never got around to making a dust collector: https://www.homedepot.com/p/Frost-King-E-O-1-3-4-in-x-36-in-White-Plastic-and-Brush-Door-Sweep-C35PH/100193136
02:41 PM rtagro: Rab, https://www.youtube.com/watch?v=m1n_CQJiO8A
02:42 PM _unreal_: https://www.amazon.com/gp/product/B07VPKM5QM/ref=ppx_yo_dt_b_asin_title_o03_s00?ie=UTF8&psc=1
02:42 PM _unreal_: I purchased that
02:43 PM _unreal_: I ordered this https://www.amazon.com/gp/product/B01566L3HQ/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1
02:43 PM Rab: rtagro, how does that relate to LinuxCNC?
02:44 PM rtagro: Rab, lol wrong chat
02:45 PM Rab: _unreal_, interesting product! I guess you could install that in a slot around the dust shoe; if it wears out, just throw it away and use a new piece.
02:45 PM rtagro: Rab, lol wrong group chat
02:45 PM _unreal_: Rab, something like that.
02:45 PM _unreal_: I'm going to design a holder that I can mill out and screw together. then bed some magnets
02:45 PM rtagro: Rab, but ramps is doable with linuxcnc lool
02:47 PM Rab: lool
02:51 PM rtagro: Rab, what is Ligma ?
02:52 PM Rab: rtagro, are you talking about this? https://knowyourmeme.com/memes/ligma
02:55 PM rtagro: Rab, Ligma balls!
02:55 PM Rab: rtagro, I think you might be looking for EFnet.
03:02 PM CaptHindsight: andypugh: nobody told me that you guys were making waffles! I'm going next year!
03:12 PM andypugh: rtagro: GRBL and LinuxCNC both do the same thing. You use one, or the other. There is no useful way to use them both.
03:13 PM andypugh: CaptHindsight: Better still, there was an automatic pancake maker. One of these: https://www.youtube.com/watch?time_continue=16&v=RHsY2W9VX6A
03:15 PM cerna: CRAMPS began its life as a RAMPS on BeagleBone hack.
03:15 PM andypugh: Yes. I think that the C is for “Charles”
03:15 PM cerna: All in one solution to move towards the RepRap community mindset.
03:15 PM cerna: No, it's Cape.
03:16 PM cerna: Cape RAMPS.
03:16 PM cerna: Cape is terminus technicus for BeagleBone "Shields", which is Arduino terminus technicus for extension board.
03:18 PM cerna: There were Parport Capes before, but it was too much PC for 3D printing people to connect BBB to parallel port to BoB to motor drives.
03:19 PM cerna: So, Ramps on parallel port is doable. But does not make much sense.
03:21 PM cerna: Of course, unless one owns it and nothing else. Which is - probably - this case.
03:22 PM CaptHindsight: https://www.pine64.org/devices/single-board-computers/rock64/ anyone have this up close?
03:22 PM andypugh: I own one.
03:23 PM Rab: I made a parport "cape", before I gave up on BBB: https://github.com/G-Cipher/BURPS
03:23 PM andypugh: It’s on the desk next to me. Hoe close do you need?
03:23 PM andypugh: I made a parport hat for the Pi:
03:23 PM CaptHindsight: andypugh: is the Ethernet integrated in the SOC?
03:24 PM CaptHindsight: we were just talking about the options available for a Linuxcnc arm board in the car
03:25 PM andypugh: Rab: https://photos.app.goo.gl/pf1WqqFR47Yuk6x48
03:25 PM CaptHindsight: and the tradeoffs in features vs how much Linux work is involved for stable LCNC
03:25 PM andypugh: CaptHindsight: I dont know how to tell..
03:25 PM Rab: andypugh, very nice, is the IC a level shifter?
03:26 PM Rab: http://reboots.g-cipher.net/burps.jpg
03:26 PM andypugh: Rab: Yes, the almost-magic GTL bidirectional level shifter.
03:26 PM CaptHindsight: http://opensource.rock-chips.com/images/d/d7/Rockchip_RK3328_Datasheet_V1.1-20170309.pdf
03:27 PM CaptHindsight: Rock64 SOC short form data sheet ^^
03:27 PM Rab: andypugh, do you have the part number handy?
03:27 PM CaptHindsight: we build kernels for arm on x86 usi8ng QEMU
03:28 PM CaptHindsight: and the open mali drives for the rock64 are working
03:29 PM CaptHindsight: andypugh: any downsides to the rock64 you have noticed yet?
03:29 PM CaptHindsight: parts falling off, connectors get in the way of each other, fire, etc?
03:30 PM andypugh: I have basically done little more than boot it.
03:30 PM CaptHindsight: and no fires, so good sign
03:31 PM CaptHindsight: we just got a Rpi 4 in, going to push it at 4K 60fps and heavy cpu load
03:32 PM CaptHindsight: sitting idle without a heatsink it's near 60C
03:33 PM CaptHindsight: andypugh: did you notice if it uses u-boot?
03:33 PM andypugh: Rab: https://www.mouser.co.uk/ProductDetail/NXP-Semiconductors/GTL2000DGG118?qs=sGAEpiMZZMutXGli8Ay4kFxM%2FQKq1G34avZVoqx2%252BVQ%3D
03:33 PM andypugh: CaptHindsight: Lut me ssh in….
03:34 PM Rab: andypugh, great, thanks!
03:34 PM CaptHindsight: I see some images for the rock64 that use u-boot
03:35 PM CaptHindsight: https://github.com/ayufan-rock64/linux-u-boot/releases
03:35 PM CaptHindsight: i might order one now
03:36 PM CaptHindsight: the Rpi 4 with u-boot and a nice preempt_rt kernel might work well enough as well
03:37 PM CaptHindsight: the Rpi4 open gpu drivers seem to be working ok
03:37 PM andypugh: CaptHindsight: The Rock64 SD card contains an extlinux folder and extlinux.conf. Does that answer the question?
03:38 PM CaptHindsight: I'll dig into it
03:38 PM CaptHindsight: andypugh: how fast can you toggle the IO on the rock64?
03:39 PM andypugh: I haven’t even built a realtime kernel.
03:39 PM andypugh: As I said, I have done little more than boot it.
03:40 PM skunkworks: andypugh: what amount of memory did you buy for the pi?
03:40 PM andypugh: I have a 4GB one.
03:40 PM andypugh: And a 4GB Rock64
03:41 PM CaptHindsight: Python R64.GPIO takes 530us to toggle a Clock cycle /sys/class/gpio equates to SPI Clock of 1.8 KHz
03:41 PM CaptHindsight: Python RPI.GPIO takes 4us to to toggle a Clock cycle /dev/gpiomem equates to a SPI Clock of 0.25MHz
03:42 PM CaptHindsight: I have just tried to rewrite the R64/RP64.GPIO python wrapper using a C library i wrote that replaces python writes to /sys/class/gpio with c writes.
03:42 PM CaptHindsight: The best I could get was 190us SPI Clock of 5.26KHz
03:42 PM CaptHindsight: it is more than twice as fast but nowhere near the raspberry pi performance.
03:42 PM CaptHindsight: end quote
03:43 PM andypugh: lin /boot I see a vmlinuz
03:43 PM Tom_L: Rab, i used a smaller version of that level shifter on my avr programmer
03:44 PM Tom_L: GTL2003PW
03:45 PM Tom_L: they come in several data widths
03:45 PM Rab: Yeah, looks like it...down to the 2-bit GTL2002.
03:46 PM Tom_L: yup
03:47 PM andypugh: The 2000 is 22 bit.
03:47 PM Tom_L: i tested mine down to 1.7v and below that i couldn't see the led blink anymore :)
03:47 PM andypugh: Enough for a parport
03:58 PM CaptHindsight: https://store.pine64.org/?product=rockpro64-4gb-single-board-computer with PCIe connector
04:00 PM andypugh: Wonder if that will take a 6i25?
04:00 PM CaptHindsight: don't see why not at this point
04:00 PM CaptHindsight: $80 vs $45
04:02 PM andypugh: vs $100 for an x86 mini-ITX
04:02 PM Tom_L: can you make toast with it?
04:03 PM Tom_L: or does it run cool
04:07 PM andypugh: I don’t know. I am an owner, not a user...
04:08 PM Tom_L: heh
04:08 PM CaptHindsight: I purchased a bunch of Celeron boards for $30ea
04:09 PM CaptHindsight: they use laptop sodimm
04:09 PM CaptHindsight: preempt_rt was ~25uS
04:12 PM skunkworks: my laptop speaker seem to be gettin quieter and quieter...
04:13 PM skunkworks: http://electronicsam.com/images/greenmachine/IMG_20190808_154648.jpg
04:13 PM skunkworks: used a stronger maganet to get the swarf off.. Now it gets loud again.. :)
04:15 PM skunkworks: the shavings pushed the element down to the speaker maganet..
04:15 PM skunkworks: pulled?
04:15 PM CaptHindsight: pulled by the magnet, then wedged the cone low
04:16 PM SpeedEvil: 'Is your cone wedged low, does it wobble to and fro...
04:18 PM Deejay: gn8
04:23 PM CaptHindsight: giving the Rpi4 another go with 10A 5v supply and heat sink on SOC
04:30 PM andypugh: skunkworks: I had that problem with my SatNav.
04:30 PM andypugh: (And that lives nowhere near the machines, but I seem to exude metal)
04:53 PM skunkworks: heh - maybe it comes out of your pours...
05:19 PM CaptHindsight: his pores pours metals
06:27 PM _unreal_: That way I can tonights project... take over the worl.... design a dust shoe for my cnc machine
06:28 PM _unreal_: Tonight's project... take over the worl.... design a dust shoe for my cnc machine
06:36 PM roycroft: so the same thing you try to do every night, eh?
06:39 PM jthornton: roycroft, mesaus.com is up and running on dreamhost
06:43 PM Tom_L: jthornton, better hosting?
06:43 PM jthornton: yea, with free ssl
06:48 PM Tom_L: gnipsel there too?
06:48 PM jthornton: not yet it's the last one to move because it's the base
06:48 PM jthornton: gotta move the spyder store first
06:49 PM jthornton: gnipsel.dreamhosters.com is the mirror of what's there
07:46 PM SpeedEvil: https://www.youtube.com/watch?v=bUurvD6OWD0
07:46 PM SpeedEvil: Machinists ring. Kinda neat.
08:16 PM _unreal_: trying to decide how to design my dust shoe
08:16 PM _unreal_: wish I had my brush material
08:29 PM Rab: _unreal_, just wrap the material around the outer diameter of the shoe and put a hose clamp on it.
08:31 PM CaptHindsight: jthornton: which plan at dreamhost are you using?
08:31 PM CaptHindsight: I need to change hosts
08:35 PM _unreal_: rab. I'm going to setup a magnet system
08:35 PM _unreal_: designing the screw on mount right now
08:35 PM _unreal_: Thats that part that will hold the hose
08:35 PM _unreal_: I'm making the lower brush shoe remove able
08:35 PM _unreal_: so I can just pop it off change bits and pop it back on with magnets
08:35 PM jthornton: hmm I got 3 years I think for a better price
08:39 PM jthornton: CaptHindsight, I think it's the shared unlimited and I got 3 years
08:41 PM CaptHindsight: thanks the prices look good
08:42 PM CaptHindsight: i have some shared sites that were on LiquidWeb but they sold it off to deluxe
08:42 PM CaptHindsight: and now it's pretty bad
08:42 PM CaptHindsight: I have to tell them whats wrong
08:43 PM CaptHindsight: 15 smooth sailing on LiquidWeb and now problems all the time
08:43 PM CaptHindsight: 15 years