#linuxcnc Logs
May 24 2020
#linuxcnc Calendar
01:57 AM Deejay: moin
05:49 AM JT-Cave: morning
05:49 AM XXCoder: yo
07:03 AM Tom_L: morning
07:52 AM JT-Cave: morning
08:24 AM skunkworks: I never noticed the metric pitch * gear reduction cancels each other out. Probably easier maths in the olden days ;) .4 tpmm*2.5 pully reduction = 1
08:24 AM skunkworks: on the emco
08:59 AM dirty_d: I'm gonna machine this on my router and see how it comes out https://nasa3d.arc.nasa.gov/detail/gale-crater
08:59 AM dirty_d: probably wont have that much detail though, smallest ball end mill is 1/8"
09:00 AM dirty_d: I should get one of those tapered ball end mills
09:02 AM * SpeedEvil wonders about drag chisels.
09:09 AM tiwake: SpeedEvil: thats what I did to engrave this... https://derpicdn.net/img/view/2016/9/23/1255974.jpeg
09:10 AM SpeedEvil: luna++
09:10 AM tiwake: though the 'chisel' was always force-pointed in the direction of the cut, driven by a little stepper motor
09:10 AM SpeedEvil: I especially mean in soft materials.
09:11 AM tiwake: yeah, brass is soft
09:11 AM SpeedEvil: I made remarkably realistic lunar craterscapes with papier mache back in the day
09:11 AM SpeedEvil: Soft = crumblier than plaster of paris or something
09:11 AM tiwake: oh, if its not a metal then I'm not terribly interested
09:55 AM HexaCube: You guys might know, is there a 'rule of thumb' about how much material I should have around a thread of size x ?
09:59 AM SpeedEvil: Do you mean the 'nut' enclosing the bolt for the maximum strength?
10:00 AM HexaCube: no I mean.... what's the minimum "wall thickness" next to a thread
10:00 AM HexaCube: say I wanna tap a hole into a 6mm thick part, what thread size to I choose :D
10:00 AM HexaCube: M4 would mean only ~1mm on the sides
10:01 AM HexaCube: or is the question too general to reasonably answer?
10:01 AM SpeedEvil: You mean sideways?
10:01 AM HexaCube: yeah
10:01 AM SpeedEvil: That's problematic as it depends on the sort of load
10:02 AM SpeedEvil: A pure tensile load may have a very different result from a load trying to push the bolt out in the direction of the thin bit
10:02 AM HexaCube: alright, was just wondering :P
10:03 AM SpeedEvil: A 'stupid' approximation would be to keep it at the normal nut dimensions for the diameter of thread as a minimum. So, 13mm for M8, ...
10:03 AM SpeedEvil: Testing also works.
10:04 AM HexaCube: that's the biggest downside of where I work at - I can't bend sheets thicker than 2mm, otherwise I'd just lasercut everything :P
10:05 AM SpeedEvil: slotted bends can be a thing, in some cases.
10:05 AM HexaCube: that being said, I could probably just 3d print the bracket I need
10:05 AM SpeedEvil: either score part-depth with a ball cutter say, or cut holes or slots along the bend line.
10:10 AM HexaCube: on a related note, I seriously gotta learn welding :/
10:14 AM SpeedEvil: How hard can it be. Welders do it.
10:15 AM SpeedEvil: More seriously, welding badly is easy.
10:15 AM HexaCube: sure, but welding properly isn't :P
10:16 AM HexaCube: plus welding steel parts for a cnc machine always seems... "meh" considering things like to warp
10:16 AM HexaCube: (or so I read)
10:34 AM skunkworks: HexaCube: http://electronicsam.com/images/KandT/zaxis.JPG
10:50 AM Tom_L: HexaCube, mine seemed to come out ok: http://tom-itx.no-ip.biz:81/~webpage/cnc/Mill_Steel/Welding/Frame_Weld1.jpg
10:51 AM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/cnc/Mill_Steel/Assembly/spindle_cooler/Mill3.jpg
10:55 AM HexaCube: Tom_L you mount your rails etc. directly to the welded assembly?
10:55 AM HexaCube: or do you mill it flat first?
11:00 AM Tom_L: nope
11:00 AM Tom_L: i did check it with a last word indicator and used a couple shims
11:01 AM HexaCube: that's cool
11:01 AM Tom_L: the plan was to mill it flat but my bud was kinda busy and i didn't feel like bothering him with it
11:02 AM Tom_L: milling itself creates warpage...
11:02 AM HexaCube: yeah I know, doing it "properly" is such a major pain that not many can afford it, eh :P
11:02 AM Tom_L: after welding i _should_ have had the whole thing annealed but i didn't
11:03 AM Tom_L: i've milled quite a few things with it and it seems to do fine
11:03 AM Tom_L: it's a hobby anyway
11:03 AM HexaCube: in the end I gotta compromise and will probably be building a aluminum-extrusion based machine
11:03 AM HexaCube: which is far from ideal but the best I can get for now :(
11:03 AM Tom_L: i would do things differently if i were planning to use it in production
11:04 AM Tom_L: i don't have an aluminum mill so i can't really say but i'd venture a guess that the steel frame would be more rigid and adds some dampening weight to it
11:05 AM HexaCube: every now and then I dream of going the epoxy granite way but I don't have any way of moving around 100s of kilos to get milled flat or to cast it flat
11:05 AM Tom_L: mind you i was limited on tools to work with. i had a sherline to do some things
11:08 AM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/cnc/Mill_Steel/Welding/Z_Column1.jpg
11:09 AM Tom_L: those turned out surprisingly flat but i did spend probably an hr or 2 aligning it
11:10 AM HexaCube: I bought a stick welder like 2 years ago and have yet to ever use it
11:11 AM HexaCube: I do need to build a table or something for the router to stand on, though
11:11 AM Tom_L: i traded a stick for a mig
11:11 AM HexaCube: sounds like a great trade :D
11:11 AM Tom_L: not an even trade :)
11:12 AM Tom_L: it was a gas stick welder with a rope pull... no recoil. that kinda dates it a bit
11:12 AM HexaCube: friend of mine did recently buy a cheap wire-welder though (not using gas, but some special wire)
11:13 AM Tom_L: flux core spatters way too much
11:13 AM Tom_L: i got a spool and used it 1 time outdoors in the wind. that's the only reason i used it
11:16 AM HexaCube: hmm, good to know!
11:18 AM Tom_L: can't remember but i think you swap polarity for it too
12:08 PM -!- #linuxcnc mode set to +v by ChanServ
12:08 PM cradek_ is now known as cradek
12:29 PM HexaCube: a possibly dumb question: For mounting ballscrew-seats, is it better to leave some air to have some wiggle room for manual alignment? Or should the part the bearings are mounted in be a tight fit?
12:29 PM HexaCube: ie like this: https://i.imgur.com/Ik7JWgA.png (tight fit)
12:30 PM HexaCube: or with an oversized hole
12:39 PM CaptHindsight: this site hasn't changed since the 90's https://www.finishing.com/index.html
12:45 PM Rab: HexaCube, you're asking about the part that supports the end of the ballscrew?
12:46 PM HexaCube: Rab correct, I don't know how you actually call that part I'm afraid
12:46 PM HexaCube: (if anyone would tell me, that would be greatly appreciated)
12:46 PM Tom_L: pillow block
12:46 PM Tom_L: bearing carrier
12:46 PM CaptHindsight: ball screw support :)
12:46 PM Tom_L: pillow blocks usually aren't rigid
12:46 PM * Loetmichel is just setting up a new PC... downloading the steam library again... 13mb/sec... "maan that takes ages!".., then i thought back: not even 20 years ago that was the transfer rate of a good SCSI1-disk. Internet at that speed?? Unthinkable... the changes we experience... :-)
12:46 PM Tom_L: that too
12:47 PM Tom_L: Loetmichel, you deserve that if you're playing games (steam)
12:49 PM CaptHindsight: HexaCube: one end should be a rigid support with the bearing preloaded
12:49 PM Rab: HexaCube, the end with the motor should be fastened tightly: that's what the screw pushes against. The other end should be able to slide axially but not radially, since the screw may in expand length relative to the rest of the machine as it warms up.
12:49 PM HexaCube: right, but I'm wondering on how to design the part you mount the supports to
12:50 PM HexaCube: ie. loose fit or precision fit :P
12:50 PM Rab: HexaCube, I believe the bearing should be well-fastened in the block.
12:51 PM Loetmichel: Tom_L: i deserve WHAT?
12:51 PM HexaCube: a loose fit would mean I can still align the ballscrew a little by being able to move the supports a bit
12:51 PM Rab: But your mount should be designed so it can be adjusted before tightening to the machine, because it might not be exactly parallel to the rails.
12:51 PM CaptHindsight: one end is a tight fit preloaded, the other end can have some slight play axially and radially
12:52 PM CaptHindsight: axially it should not move since the the other end is fixed
12:53 PM HexaCube: (just to make sure: I'm not talking about fitting the bearing in the pillow block, but fitting the pillow block into the part it mounts to to keep it attached to my z-axis plate)
12:53 PM CaptHindsight: radially it can have a little play but not much since it will whip around if left loose
12:53 PM Rab: HexaCube, okay, I think we're on the same page then.
12:53 PM CaptHindsight: and that is the whole reason why you have chosen to support it at both ends so that the other end does not whip around
12:54 PM HexaCube: https://www.dold-mechatronik.de/media/image/product/37100/lg/bearing-unit-fk6~3.jpg so say I have this part
12:54 PM CaptHindsight: https://www.linearmotiontips.com/choose-end-fixity-conditions-screw-applications/
12:54 PM Rab: HexaCube, the magic cnczone.com search term is "fixity". E.g.: https://www.machinedesign.com/mechanical-motion-systems/linear-motion/article/21828146/the-importance-of-ballscrew-end-fixity
12:54 PM HexaCube: 22g6 would be the outside diameter
12:54 PM HexaCube: so do I just make the hole it fits in a 22H7 or something like that?
12:55 PM HexaCube: or do I make it 22.5 or even 23 so I can move it around for alignment, was my question
12:56 PM Rab: HexaCube, I think some wiggle room for alignment is a good idea, if this is something you're building at home.
12:56 PM Rab: As long as everything is fastened down properly once it's aligned.
12:58 PM HexaCube: though I should check wether a different pillow block might be better suited for my z-plate, now that I think about it
01:00 PM HexaCube: https://www.dold-mechatronik.de/media/image/product/37098/lg/bearing-unit-ek6~3.jpg <- this type might work way better for me heh
01:02 PM HexaCube: thanks either way though!
01:42 PM unterhaus: I went to a tutorial where they discussed an extremely precise lead screw nut mounting for a lathe and it rotted my brain
01:43 PM SpeedEvil: Just use m8 threaded rod and it'll be fine.
02:27 PM _unreal_: pcw_home, hi https://automationforum.in/uploads/default/original/1X/1a52b22710366debc0047fe08f0c7e818dc054ee.png Do I need to wire the 7i96 like that image? for rs485? the hy01d511b only has RS+ RS- GRD
02:29 PM _unreal_: I dont know if the resistor in needed.
02:31 PM pcw_home: Unfortunately There is no MODBUS support for the HM2 UART so if you want to control a VFD with MODBUS, you need a USB <-> RS-485 adapter or similar
02:36 PM _unreal_: ! believe it or not I have a serial to rs485 adapter somewhere
02:36 PM _unreal_: going to have to look for it
02:49 PM _unreal_: pcw_home, I have an other type I think as well somewhere?? https://www.automationdirect.com/adc/shopping/catalog/retired_products/programmable_controllers/fa-isonet
02:52 PM _unreal_: Thought/think I have serial to rs485 as well
04:18 PM Deejay: gn8
05:12 PM Matt1234559: .
05:17 PM Matt1234559: Anybody here get linuxcnc 2.8 working on a PI 4B with raspbian lite? I have been following the tutorials by John Thorton at https://gnipsel.com/linuxcnc/uspace/#
05:18 PM Tom_L: no but i do have 2.8 working on a rpi4
05:18 PM Tom_L: using a test image jepler posted on his private site
05:19 PM Tom_L: he also used jt's guide as a start i think
05:20 PM Tom_L: there is also this: http://buildbot.linuxcnc.org/dists/buster/2.8-rtpreempt/binary-armhf/
05:20 PM Matt1234559: I'll have to check those out
05:21 PM Matt1234559: The problem i'm having following the tutorial, i get an error message when i try
05:21 PM Matt1234559: sudo dpkg -i linuxcnc-uspace_2.8.0~pre1_armhf.deb
05:21 PM Matt1234559: i'm wondering if the name is out of date
05:21 PM Tom_L: his image actually has 2.9 on it but i built 2.8 after the fact on the rpi4
05:23 PM Tom_L: i'm sure there are likely recent changes since it is a new platform for it
05:24 PM Matt1234559: Thats what makes it so interesting using a raspberry pi
05:25 PM XXCoder: latency isnt bad either!@
05:25 PM XXCoder: and theres plenty of pins directly on it, if you need more behind what mesa board you has has
05:26 PM Thorhian: I used 2.9 *shrug
05:27 PM XXCoder: wonder if linuxcnc can use pins on rpi4, or need to add support for it
05:28 PM Tom_L: why not? pcw has 2 cards for it
05:28 PM Tom_L: voltage translation would be an issue if you diy
05:29 PM skunkworks: I have been running pi4 with mesa for quite a while now. runs really well
05:29 PM XXCoder: nice
05:29 PM XXCoder: Tom_L: just had an idea. cnc pins hat. it isolates all input and output
05:30 PM XXCoder: that way no issues if use those
05:30 PM skunkworks: XXCoder: the gpio can be controlled by linuxcnc.. Just pretty limited if you want to run step/dir
05:30 PM XXCoder: and i bet theres other people who would like that for higher risk projects that could backlash and dry rpi
05:30 PM skunkworks: but for gpio - it would be fine
05:30 PM skunkworks: (as long as you don't burn it up ;)
05:30 PM XXCoder: skunk yeah talking about other stuff like control light, brake etc not servo or steppers
05:32 PM skunkworks: right
05:33 PM skunkworks: from my playing - you could maybe get around 10khz step rate..
05:33 PM skunkworks: which might be fine for somethings
05:33 PM XXCoder: slower machines thats for sure
05:34 PM skunkworks: https://www.youtube.com/watch?v=LKjNOVHhHio
05:34 PM XXCoder: handcam videos is dangerous to me now
05:34 PM XXCoder: pausing and using it as "slideshow" now
05:35 PM XXCoder: hey andy
05:35 PM XXCoder: good thing captions mostly work anyway lol
05:37 PM andypugh: ?
05:37 PM XXCoder: related to skunk's video link
05:37 PM andypugh: Right
05:38 PM XXCoder: i couldnt watch it so i used pause and just press right to "watch" it
05:38 PM XXCoder: captions work in that way too though sometimes it skips some caption
07:10 PM dirty_d: that came out ok https://photos.app.goo.gl/6rr4YzMoi68peTC69
07:11 PM XXCoder: nice
07:11 PM zeeshan_: Looks pretty awesome!
07:11 PM zeeshan_: how long did that take?
07:11 PM dirty_d: https://photos.app.goo.gl/C7z7b8hofDAcvnUs5
07:11 PM XXCoder: could use clear resin for top, then you can have moon table or something :)
07:11 PM dirty_d: the roughing op like 10 min, the finish like 30
07:11 PM dirty_d: I wonder how to get a better finish
07:12 PM XXCoder: one more pass with tiny endmill
07:12 PM zeeshan_: ya
07:12 PM dirty_d: Something other than pine would be better
07:12 PM zeeshan_: also is your ball nose cutter designed for wood
07:12 PM dirty_d: yea
07:12 PM zeeshan_: I think it looks pretty good as is
07:12 PM XXCoder: problem is you would need very skinny toolgholder or very long ballend tool
07:12 PM XXCoder: zee agreed
07:12 PM dirty_d: I wonder what one of those harbor fraught soda blasters would do to it?
07:13 PM dirty_d: XXCoder, I was thinking of getting one of those tapered ball end mills
07:13 PM XXCoder: um is yours on only single direction? or vertical too?
07:13 PM dirty_d: the passes? They're only in Y
07:13 PM zeeshan_: Is that the webb crater?
07:13 PM dirty_d: gale crater
07:14 PM XXCoder: ahh you can VASTLY improve it by doing both x and y
07:14 PM XXCoder: linuxcnc has setting for that
07:14 PM XXCoder: (picture to gcode=)
07:14 PM dirty_d: yea I figured, I hadn't planned on making this, I just wanted to see what would happen in case i want to make something like this in the future
07:14 PM dirty_d: I just threw something together as fast as I could in fusion this morning
07:14 PM dirty_d: I learned working with meshes is annoying
07:15 PM XXCoder: lol
07:15 PM dirty_d: I tried converting it to a quad mesh in blender so I could convert it to t-splines or brep, but it didn't work
07:16 PM dirty_d: fusion just gave an unspecific error
07:16 PM dirty_d: so I just used the triangle mesh as it was
07:16 PM XXCoder: interesting
07:17 PM XXCoder: i just used picture heigh map to gcode. :)
07:17 PM dirty_d: It's probably my fault though
07:17 PM dirty_d: probably definitely
07:17 PM XXCoder: https://www.youtube.com/watch?v=kZXK1ljoxF8
07:17 PM XXCoder: testong stuff
07:17 PM XXCoder: you can see world map and swirly stuff
07:18 PM dirty_d: that's cool
07:18 PM dirty_d: I need to get a real spindle
07:18 PM dirty_d: how may rpms was that?
07:18 PM XXCoder: uhh lots
07:18 PM dirty_d: sounds it
07:18 PM XXCoder: its not tool for wood, and very small
07:19 PM XXCoder: it was before i improved stepper setup too I think
07:19 PM dirty_d: my trim router has a lot of runout and vibrates a lot
07:20 PM XXCoder: last project before i shelved it for few years https://www.youtube.com/watch?v=gOWVCvER3i4
07:20 PM XXCoder: phone camera was very poor
07:21 PM veegee: Ok now I'm contemplating buying this 5 ton forklift to lift my car: https://www.kijiji.ca/v-view-details.html?adId=1501996533
07:21 PM veegee: Cost of a hydraulic car lift is similar and this is far more versatile
07:22 PM veegee: The forks open wide too, perfect for my Jeep Wrangler Unlimited
07:22 PM SpeedEvil: https://www.youtube.com/watch?v=-oB6DN5dYWo related.
07:22 PM dirty_d: Yea as soon as I started watching it AvE voice "focus you faack" played in my head
07:24 PM SpeedEvil: Do you know more than the pictures?
07:25 PM XXCoder: SpeedEvil: lol he BROKE the blar off
07:25 PM XXCoder: blade
07:27 PM XXCoder: man that video lol
07:29 PM XXCoder: SpeedEvil: did you know there was a safety video that was so bad it literally made people watching it sick and vomit, and there was bunch of injuries
07:29 PM XXCoder: people ran out of room and trapped some
07:30 PM XXCoder: apparently it was largest amount of accients ever, beating company record
07:36 PM dirty_d: I think I watched that video in high school
07:36 PM dirty_d: "the convincer"
07:39 PM veegee: I'm watching the video lol
07:39 PM veegee: I love German with English subtitles. Reminds me of the Downfall parodies
07:45 PM veegee: That video is gold
08:12 PM dirty_d: windows has a package manager now, and my WLS filesystem is showing up in explorer
08:12 PM dirty_d: wild
08:30 PM _unreal_: just did an upgrade to my home cnc I've been putting off for ever. I now have my ESTOP button setup :)
08:30 PM _unreal_: dont know why but I just never bothered
08:31 PM _unreal_: nifty switch as well
08:31 PM _unreal_: ?
08:33 PM _unreal_: dirty_d, where did you get that gcode for the crater?
08:33 PM dirty_d: _unreal_, generated it in fusion360
08:33 PM dirty_d: got the model from nasa
08:34 PM _unreal_: ahh
08:35 PM _unreal_: I own fusion but I've never gotten to advanced. That and they keep pissing me off. every time i start to really understand it they cahnge shit on me
08:35 PM _unreal_: drives me nutty
08:36 PM dirty_d: I haven't noticed that many things change
08:36 PM dirty_d: usually it's for the better
08:37 PM _unreal_: I have.. then again I only start up fusion once a month
08:37 PM _unreal_: I do most of my cad with designspark
08:37 PM _unreal_: its SOOOO much faster
08:45 PM dirty_d: hmm
09:15 PM Thorhian: I just use FreeCAD ¯\_(ツ)_/¯
09:16 PM andypugh: _unreal_: I find Fusion very fast. Flaky, but fast.
09:16 PM XXCoder: fast, with tires barely bolted on
09:17 PM andypugh: (I seem to find myself submitting a lot of bug reports)
09:17 PM Thorhian: XD
09:17 PM Tom_L: andypugh, have they addressed any of them?
09:17 PM andypugh: In fact, only an hour ago: https://forums.autodesk.com/t5/fusion-360-support/bug-no-way-back-after-quot-file-not-found-quot/m-p/9530360/highlight/false
09:18 PM andypugh: Yes, they are quite responsive.
09:18 PM dirty_d: I submitted a bug report, and they were like, well no one else has complained, lol
09:18 PM Thorhian: I find it extremely offensive I have to wait a couple of minutes to export an STL file.
09:19 PM dirty_d: calculations involving angles are performed at the precision of your display precision for angles in your preferences
09:19 PM dirty_d: at least for setting a revolute joint angle
09:20 PM andypugh: Yes, that makes no sense
09:21 PM dirty_d: and incrementing a joint angle by a very small amount doesn't result in the joint actually moving, even if the small increments add up to a large angle
09:21 PM andypugh: Thorhian: ? I can send an STL to Cura faster than I can change to the Cura window.
09:21 PM dirty_d: so to hack it, you have to increment to angle + pi, then increment to angle + desired_increment
09:23 PM andypugh: I really don’t get the joints in Fusion. I was really happy with the constraints in Inventor, and they seem to have decided to choose something new and worse in Fuson.
09:23 PM Thorhian: andypugh: Anytime I try to export an STL file from Fusion360 it tells me it has to do the file conversion in the cloud and I have to wait a minute or two. Maybe you get better priority if you are on a paid license?
09:25 PM andypugh: Thorhian: Try File -> 3D Print ->unselect “send to Utitity” and it saves the STL locally and immediately.
09:27 PM Thorhian: Hmm, never have tried to do that. I needed to import into Estlcam at the time. Plus, this is in a VM, so I pretty much only run F360 and EstlCAM in the machine. Everything else is running in Arch Linux.
09:33 PM dirty_d: andypugh, I think there are ways to basically get the same behavior
09:34 PM andypugh: The cloud conversion is annoying, but at least it is rather comprehensive.
09:34 PM andypugh: But it can sometimes be bypassed.
09:41 PM Thorhian: Honestly, screw the cloud in this case. I don't want my CAD program relying on servers out of my control doing things my computer could easily do itself.
09:41 PM andypugh: Oh, I share your distaste.
09:42 PM andypugh: But I used to use Inventor full time, so it’s close enough that I can just design stuff without learning a more philosophically pure applicatio.
09:45 PM Thorhian: Ah. I have the advantage of not needing to care about industry standards, so I use Blender and FreeCAD and other FOSS software.
09:45 PM CaptHindsight: now wait a gosh darn minute, these are $65ea https://tropical-labs.com/shop/mechaduino-0-2-servo/
09:45 PM CaptHindsight: the board is $49 https://tropical-labs.com/shop/mechaduino-0-2-pcb/
09:46 PM CaptHindsight: https://tropical-labs.com/mechaduino/
09:47 PM CaptHindsight: $49 for a board that controls a nema45 would make sense, or at least nema23
09:47 PM XXCoder: that was kickstarter right?
09:47 PM CaptHindsight: dunno, mehbe
09:47 PM XXCoder: and yeah price is quite high
09:48 PM andypugh: $65 for a servo-like drive seems cheap enough, if you ignore that it is built around a $15 stepper.
09:49 PM CaptHindsight: it starts to make sense for larger motors
09:49 PM CaptHindsight: nema17 is for toys
09:49 PM andypugh: But being based around a cheap stepper is largely the point.
09:49 PM XXCoder: can it be used on larger?
09:49 PM CaptHindsight: same concept for a robot arm
09:50 PM andypugh: Steppers are wierd brushless motors, and so can make pretty good servos if driven differenlty.
09:50 PM CaptHindsight: XXCoder: it is to low a current drive for more motor, but getting more current is cheap
09:50 PM XXCoder: interesting
09:50 PM CaptHindsight: https://www.omc-stepperonline.com/closed-loop-stepper-motor/
09:51 PM _unreal_: nifty
09:51 PM _unreal_: I have steppers like that that have a built in encoder
09:51 PM _unreal_: but no driver
09:51 PM _unreal_: :(
09:51 PM CaptHindsight: https://www.omc-stepperonline.com/closed-loop-stepper-motor/economic-nema-34-closed-loop-stepper-motor-12-0-nm-1699-68oz-in-encoder-1000cpr.html this with a few extra $ for a controller
09:51 PM CaptHindsight: this is what the Chinese should make
09:52 PM CaptHindsight: and sure some would be absolute crap copies
09:52 PM CaptHindsight: but they could make decent ones for cheap
09:54 PM CaptHindsight: allwinner make ARM SOC's with integrated Ethernet for $3
09:54 PM CaptHindsight: something STM32 with ethernet would be cheap fast on motor control
09:57 PM _unreal_: hum
09:58 PM Tom_L: hmmm. tinkerboard
09:58 PM CaptHindsight: or a lower cost version of STMBL
09:58 PM Tom_L: he's got a tinkerboard
10:04 PM _unreal_: I have a tinker board
10:04 PM _unreal_: at this point IMO they are trash
10:04 PM _unreal_: they have BOOT issues
10:04 PM _unreal_: if you can get past the it wont boot power issue they are VERY powerful
10:04 PM veegee: https://www.youtube.com/watch?v=VR2j3hIGs_o why do the forklift safety videos say to always leave the forks fully lowered?
10:04 PM _unreal_: I've found over and over that if you have anything plugged into the USB when booting the board it will just bootloop
10:05 PM veegee: What's wrong with leaving them a few cm above the ground?
10:05 PM XXCoder: trip
10:05 PM veegee: ah ok
10:05 PM XXCoder: right sort of trip and youre losing your foot
10:05 PM veegee: I don't see how that's really different than tripping over a log while hiking in the woods
10:06 PM _unreal_: less about dripping and more about breaking an ankle
10:06 PM _unreal_: tripping
10:06 PM XXCoder: you could jam your foot under blade and it wouldnt move as youre falling forward
10:06 PM _unreal_: if the forks are up just a bit your likely to get a foot caught under the fork. and if you keep going you break your ankle
10:06 PM XXCoder: plus well lawsuits
10:06 PM unterhaus: I worked with a guy who was driving along and his car got stabbed by a forklift
10:06 PM Tom_L: veegee, leave them knee high and figure out for yourself :)
10:07 PM unterhaus: if they had lowered the forks, that wouldn't have been quite so exciting.
10:07 PM XXCoder: kneww high would be nasty but not as nasty as perfect height to jam your foot in and fall forward
10:07 PM XXCoder: *knee
10:07 PM veegee: Well I'm not operating a business and it's only me in the industrial unit so don't have to worry about other people
10:08 PM veegee: knee high doesn't seem like an issue
10:08 PM unterhaus: fortunately, the forks went on either side of his feet
10:08 PM veegee: Yeah you'll bump into it but there's a whole bunch of other things that high too
10:09 PM unterhaus: I think with forklifts, every possible mistake has been made a nearly infinite number of times
10:09 PM XXCoder: nearly infinite = 0% of infinite
10:09 PM veegee: I'm going to also buy this specific one: https://www.youtube.com/watch?v=NgX7us0EolY&feature=youtu.be
10:09 PM veegee: seller took a video of it
10:10 PM veegee: 10,000 hours on it, but selling for less than $3,000 CAD and it can lift 10,000 lbs
10:10 PM veegee: going to use it as a car lift
10:10 PM XXCoder: you can use it as ride too lol thats very varied machine
10:11 PM veegee: Look how wide the forks go
10:11 PM XXCoder: and it rotates'
10:11 PM veegee: and it looks like it's fully working.
10:11 PM XXCoder: never seen forklife do that
10:11 PM veegee: Even if it's near end of life, no way I'm going to put enough hours on it to push it to end of life
10:12 PM veegee: Yeah no idea what I'd use the rotating for
10:13 PM XXCoder: pouring tub of paint into shop floor
10:15 PM veegee: Ah right, pouring is an application
10:15 PM XXCoder: yeah
10:15 PM veegee: It should have enough of a counterweight to lift a 5,000 lb car right?
10:15 PM veegee: like without having to add an additional counterweight
10:16 PM XXCoder: no idea? i dont know how those work (beyond basic machine functions)
10:16 PM XXCoder: ie: if its rated for 10k pounds, is it with itself only or is it with needed counterweights etc no idea
10:16 PM XXCoder: or is it just blade luft ability
10:17 PM veegee: it means it's rated for lifting 10,000 lbs
10:17 PM XXCoder: i dont even know if max or near it means forklift has more limitions, like limited height can lift etc
10:17 PM veegee: as long as you keep the load center behind what it shows on the nameplate
10:18 PM veegee: My only concern is it tipping. I need to find some jack stands that are as tall as I am
10:18 PM XXCoder: yeah never depend on lifting machine to hold
10:19 PM XXCoder: that way foolhardy way
10:19 PM veegee: Could also just stack some cinder blocks and use the forklift to mount the car on the cinder blocks
10:19 PM veegee: probably the safest thing
10:20 PM XXCoder: probably. careful where weight goes though :)
10:21 PM _unreal_: ya rotating forks thats a new one on me
10:21 PM _unreal_: the motor sounded like it has idle issues
10:22 PM veegee: Should be able to clean out the carb/injectors
10:22 PM veegee: And adjust the idle RPM
10:23 PM XXCoder: plan to clean and hone bores?
10:23 PM XXCoder: or is that too deep of a restore
10:23 PM veegee: That's too much effort
10:23 PM veegee: I'd rather swap the engine out at that point
10:23 PM veegee: Or convert to electric
10:25 PM XXCoder: one of best cars for eelctric is ironically vw beetle
10:25 PM XXCoder: its frame is very very light
10:25 PM veegee: I don't know why people bother with boring out cylinders and all that
10:25 PM XXCoder: and you could swap some parts for cf
10:25 PM veegee: gasoline engines are disposable
10:25 PM XXCoder: for another 40 pounds loss
10:53 PM CaptHindsight: tinkerboard should be fixable
10:55 PM CaptHindsight: there is uboot support
10:57 PM CaptHindsight: https://tinkerboarding.co.uk/wiki/index.php/Setup
11:11 PM _unreal_: so damn happy I finally put an estop on my home cnc hehe
11:11 PM _unreal_: only took 2 years
11:12 PM CaptHindsight: veegee: did you get any concrete removed yet?
11:13 PM _unreal_: CaptHindsight, the tinkerboards are not reliable
11:13 PM _unreal_: I have never really had any issues with them ONCE they boot but getting them to boot is often a WTF problem
11:14 PM _unreal_: I built this entire case for it and in or out of the case THEY JUST dont boot...
11:14 PM _unreal_: then I have to take everything apart. unplug everything from the board and it then boots.
11:14 PM _unreal_: I've found that if ANYTHING is plugged into the USB ports forget about it. its likely to boot loop
11:14 PM CaptHindsight: datz why you have to fix U-boot
11:14 PM _unreal_: its a hardware problem
11:14 PM CaptHindsight: it dah bootloader
11:15 PM _unreal_: has to do with the power
11:15 PM _unreal_: the regulator has a sensory issue and refuses to latch
11:15 PM CaptHindsight: https://tinkerboarding.co.uk/forum/archive/index.php/thread-16-2.html
11:16 PM CaptHindsight: the Rpi guys also have trouble properly desinging power supplies
11:16 PM CaptHindsight: must be some new thing with ARM board devs
11:16 PM CaptHindsight: to cheap
11:16 PM CaptHindsight: too
11:18 PM _unreal_: there are two ways to power the board. VIA the usb port which is not rated for the amp draw that the board requires
11:18 PM _unreal_: OR via the 44pin header
11:18 PM _unreal_: I power via the 44pin header. it helps
11:18 PM CaptHindsight: yeah, they should have the power issues in big red letters
11:19 PM _unreal_: BUT regardless. it has to do with the power regulator.
11:19 PM CaptHindsight: NO CHEAP USB CABLES
11:19 PM _unreal_: I wanted to run my new cnc using the tinkerboard. I mean I did all the software.
11:20 PM _unreal_: got RTOS, linuxcnc compiled everything
11:20 PM _unreal_: but the board is not reliable. it would often just NOT boot
11:20 PM _unreal_: after 30 times pulling the power cord out tring to get it to boot and finally getting it to boot after unplugging everything
11:20 PM _unreal_: it becomes useless
11:21 PM _unreal_: if its NOT in an open EASY to access case. you cant remove anything to fuck with it
11:24 PM _unreal_: CaptHindsight, on top of that ASUS has never offered a fix
11:24 PM _unreal_: That its self should be TELLING
11:26 PM _unreal_: and there are no tinkerboard II's out
11:27 PM _unreal_: There is the tinkerboard S but I believe that one has all the same issues
11:35 PM XXCoder: veegee: fancy https/i.imgur.com/doPQSnB.mp4 heh