#linuxcnc Logs

May 25 2022

12:27 AM randy: morning
12:36 AM travis_farmer853: G'Morning ☕
12:40 AM randy: mhm. got 2 ER20 collets from aliexpress, 1/2" and 1/4"; since i do not have any cutter/endmills in this size, why the ... i ordered them? cant remember :)
12:54 AM roycroft: those are the two most common shank sizes for router cutters in most of the world
12:55 AM roycroft: i'd get those two even if all my tooling was metric
12:57 AM randy: maybe that was exactly my intention :)
12:58 AM roycroft: for my router table, whose spindle is er20, i have a 1/8", 1/4", 8mm, and 1/2" collet
12:58 AM randy: i stumbled over 3 tooth wood cutters with 1/2" shank, but didnt ordered them yet. i believe that was the reason for the ER20.
12:59 AM randy: well, metric land here. i have ER20 from 1mm up to 12mm in 1mm step
01:00 AM roycroft: so what you actually ordered was a 12.7mm collet and a 6.35mm collet :)
01:00 AM randy: so for me 1/8", 1/4" and 1/2" are quite "special".
01:01 AM randy: hehe, yes, exactly. i am thinking "internally" with 3.175mm, 6.35mm and 12.7mm
01:02 AM randy: same btw when working with eagle or kicad
01:03 AM roycroft: i'm really enjoying not having to do unit translations in solidworks
01:04 AM roycroft: i just drew some panels that need to be 1.5" + 1088mm high
01:04 AM roycroft: and that's exactly what i entered into sw
01:56 AM Deejay: moin
02:19 AM -!- #linuxcnc mode set to +v by ChanServ
03:33 AM -!- #linuxcnc mode set to +v by ChanServ
03:40 AM -!- #linuxcnc mode set to +v by ChanServ
04:59 AM Tom_L: morning
05:01 AM travis_farmer853: Off Topic: i fear i may have covid... getting tested today, but it would really not help my financial situation. 😦 it will give me time off work to work on my machine... if i am even able 😦
05:02 AM Tom_L: numbers are pretty low here
05:03 AM Tom_L: they've taken down alot of the plastic barriers in stores
05:05 AM travis_farmer853: same here, but as a household family member tested positive, it looks like i too will be positive. fully vaxed..
05:13 AM Tom_L: probably won't hit you very hard
05:14 AM Tom_L: half our family tested + and the other half was never affected so you never know
05:15 AM travis_farmer853: true, until i get the test results, it could be just a cough + paranoia
05:15 AM Tom_L: we got it during delta and that's one you don't want
05:51 AM CloudEvil: As someone that diddn't recover from a viral infection in 1980, if you are exhausted more than you would expect by exertion following 'recovery' - back the fuck off. Being completely disabled is an option.
05:51 AM CloudEvil: https://imgur.com/gallery/s7ZBwlT related post.
06:03 AM JT-Cave: morning
06:11 AM Splat7847[m]: With a gcode subroutine is there a way to wait for an input to change before it progresses with the next part of the program?
06:38 AM Loetmichel: CaptainHindsight: re:job offer: Thanks but no thanks. Not because of florida but because of US healthcare and laws. i'm good with 3400 eur a month before taxes if that means that in case of another "clumsy moment" i can get all the healthcare i need without going bancrupt.
06:50 AM travis_farmer853: http://linuxcnc.org/docs/devel/html/gcode/m-code.html#mcode:m66
06:54 AM Splat7847[m]: I've rewired how my probe was working twice and still can't fix it to reliably work.. maybe instead of a pull up I should try a pull down and see if I get any better out of it
07:20 AM Splat7847[m]: Well I've done both a pull up and pull down and both ways I'll get the probe tripped during non probe movement while I'm trying to probe in either X- and X+ or Y- and Y+ I'm running out of ideas.. I just need to find the centre of a hole that aligns with the corner of my work piece
07:23 AM Tom_L: noisy data lines?
07:24 AM Splat7847[m]: because I had use for it I've been trying to get it working one axis at a time.. figuring when I had them working separately combining the code wouldn't be that hard.. but I'm currently only having it work once in a while..
07:27 AM Splat7847[m]: maybe I'm running in to a debouncing issue? as it's happening when it's meant to move away from the surface that it just probed..
07:38 AM rmu: Splat7847[m]: what kind of probe is that?
08:09 AM Splat7847[m]: Seems like it was a debounce issue it seems to work fine in X repeatedly now.. Y has a different issue that I should be able to iron out now that it at least finishes the attempt..
08:15 AM Splat7847[m]: It seems obvious now that I know.. but no Google search lead me in that direction
08:27 AM Splat7847[m]: The Y probe code was so easy to fix now that it would run reliably and do what the code was telling it.. after a couple of attempts I was able to realise I copied my X code a little too closely and forgot to change the variable it reads from #5061 to #5062 for some reason probing in Y works better when you read the Y position instead of the X.. heh
08:55 AM -!- #linuxcnc mode set to +v by ChanServ
11:47 AM -!- #linuxcnc mode set to +v by ChanServ
01:28 PM -!- #linuxcnc mode set to +v by ChanServ
01:30 PM Thorhian7490[m]: Hey guys, I've connected my servo drive to my LCNC controller setup (here is the manual for the drive https://cdn.discordapp.com/attachments/502191987760562196/966418905914572810/dkNEW_C.pdf). I've been trying to send commands to it via the input IO pins on the CN2 connector, like enabling the servo, but nothing is happening. I don't get any output signals either. I have double checked the wires and made sure that the CN2 port is
01:30 PM Thorhian7490[m]: connected to my 12V power supply, and it is. However, no power seems to be flowing from the 12V supply to it. My multimeter detects that 12v and ground lines are connected to my PSU, but when I check for continuity at the CN2 port between the 12V line and the ground line, the multimeter can't detect that they are connected. I'm totally lost on how to get LCNC properly communicating with this drive, and I have no way to talk to it
01:30 PM Thorhian7490[m]: using RS 485 in realtime.
01:39 PM ZincBoy[CAON]066: There will be almost 0 power going to the 12V input on this drive. You have powered up the line side as well?
01:39 PM ZincBoy[CAON]066: You need to pull the inputs to gnd to enable them.
01:40 PM ZincBoy[CAON]066: Outputs are opto isolated as well and open collector so you will need a pull-up to see changes.
01:46 PM ZincBoy[CAON]066: If I am reading right, you were trying to measure continuity between 12V and GND on the drive. If so, this will not work. Active devices like this are not something you can measure this way.
01:49 PM Thorhian7490[m]: Thanks ZincBoy. I’m a noob when it comes to electrical hardware. Also, these are pull down IO pins? I must have missed that. Not sure how I will deal with that with my current hardware (regular 7i76).
01:53 PM ZincBoy[CAON]066: Yes, the inputs are active low, the logic supply is connected to the anode of the optoisolators so there is no way to change that. The 7I76 has sourcing and will need a buffer to drive the inputs on the drive. The 7I76D has sinking outputs and would work this this drive.
01:54 PM Thorhian7490[m]: Got any recommendations on buffers for this? Switching to the 7i76D would just give me the same problem but for some of my other electronics lol
01:56 PM ZincBoy[CAON]066: You just need a transistor and a resistor to make this work:
01:56 PM * ZincBoy[CAON]066 uploaded an image: (62KiB) < https://libera.ems.host/_matrix/media/r0/download/jauriarts.org/RdjADRMbuioVyWLxkViFcTqW/unknown.png >
01:58 PM Thorhian7490[m]: I'm just glad the encoder is coming through lol. I need to learn how to use the pot on the 7i76 too lol. I'm feeding it 10V and 0V, but changing the value of spinout manually using setp hasn't changed the output for some reason. I'm probably doing something wrong there as well. Thankfully the drive will actually tell me what voltage that analog pin is receiving.
02:00 PM Thorhian7490[m]: Any specific reason for 22KOhm resistor? Just the amp rating for the transistor? I'm not familiar with the subtleties of the current requirements of small electronics yet unfortunately (hence me blowing up a resistor when I was trying to make my first voltage divider to get 10V for the spindle lol).
02:09 PM ZincBoy[CAON]066: The 22k is just to limit current to the base of the transistor. With 12V on the 7i76 output there would be about 500uA on the base of the transistor. With a minimum hfe of 25, this would mean the transistor would switch at least 12.5mA. Which is more than enough for the optoisolators as they have 5k series resistors which limit the current to about 2mA. All of the above is a simplification and leaves out some details that are
02:09 PM ZincBoy[CAON]066: not relevant to this level of analysis.
02:10 PM Thorhian7490[m]: I see.
02:12 PM Thorhian7490[m]: BTW, how did you determine they were pull down? The engrish and my lack of knowledge on electrical vocab is probably hampering me here lol.
02:14 PM ZincBoy[CAON]066: Schematics in section 2.2.3 and 2.3.1 are fairly clear. I usually find the drawings more accurate than the text.
02:16 PM ZincBoy[CAON]066: Then again, I do electronics for a living so I better be able to read these things 🙂
02:18 PM Thorhian7490[m]: XD I do not. But I need to learn. What's the difference between the switch and open-collector on 2.2.3? I don't know a lot about opto-idolaters either so yeah, I am very ignorant. I'm surprised I managed to get so much of this machine working without this level of trouble.
02:53 PM roycroft: are opto-idolaters folks who worship glowing halos?
03:02 PM travis_farmer853: i use plenty of opto-idolaters in my build. 😉 can never have too many
03:17 PM roycroft: i just got three phone calls from the same number
03:17 PM roycroft: first call: i pick up, dead air, i hang up after five seconds
03:17 PM roycroft: second call: the same thing
03:18 PM Tom_L: they like talking to you
03:18 PM roycroft: third call: i pick up, spammer yells "why do you keep hanging up on me?"
03:18 PM roycroft: i respond: i picked up, said hello, and there was dead air
03:18 PM roycroft: spammer said "when someone calls you you need to wait for the call to be connected after you answer!"
03:18 PM roycroft: *click*
03:19 PM roycroft: fortunately there has not been a fourth call yet
03:19 PM Tom_L: goin for 4?
03:20 PM roycroft: i hope not
03:20 PM roycroft: if there's a fourth one i'll have to log into my phone switch and block the number
03:21 PM Tom_L: awww
03:26 PM roycroft: i should set up a payment portal
03:26 PM roycroft: when spammers call, i'll direct them to the portal, and inform them that i'll be able to speak to them once i've confirmed that they have paid for an hour of my time
03:33 PM JT-Shop: the tally is the top rail on the deck had 3 1/4 pounds of screws holding it on
03:34 PM JT-Shop: I like that idea of making them pay to talk
03:34 PM XXCoder: roycroft: "Okay, I am ready to listen. $100 a minute"
03:35 PM * JT-Shop starts on the bottom rail
03:35 PM XXCoder: lol late on joke
03:35 PM XXCoder: old days, when I used TTY to makes calls, spam calls would give them tty-like sounds
03:36 PM XXCoder: which means number gets delisted from spam calls
03:36 PM XXCoder: *fax-like
03:53 PM Tom_L: yet more rain
03:58 PM roycroft: i'm not greedy
03:58 PM roycroft: i charge my regular rate for spam calls - $125/hour
03:58 PM roycroft: but there's a one hour minimum
04:23 PM Tom_L: you work cheap :)
04:38 PM roycroft: i am not an attorney
04:51 PM JT-Shop: the bottom rails are going to be a pia, the dado is exactly 3.5" and this lumber is a tad wide
04:52 PM JT-Shop: made a jig for the battery saw...
04:52 PM JT-Shop: sure was easier 22 years ago
04:53 PM Thorhian7490[m]: ZincBoy[CA, ON] (@_discord_554508768402997249:jauriarts.org) I managed to borrow some 2N3904's from an old professor I know.
04:54 PM ZincBoy[CAON]066: The resistor value is not critical.
05:00 PM Thorhian7490[m]: I've got 22K resistors already, have plenty of types of those.
05:21 PM roguish[m]: a little warm here today. 97 right now. yesterday topped out at 96
05:35 PM Splat7847[m]: Now that I know my probe issue was a debounce issue.. should I also debounce my limit switches?
05:45 PM XXCoder: 96c eh. pretty toasty there
05:46 PM Tom_L: Splat7847[m], i did
05:48 PM Splat7847[m]: When it either warms up a bit or it gets to being off peak so I can more cheaply turn the heater on I'll have to go and work out how to use multiple debounces and then actually use them
05:49 PM Tom_L: loadrt debounce cfg=4
05:49 PM Tom_L: that would give you 4
05:49 PM Tom_L: addf debounce.0 servo-thread
05:50 PM Tom_L: debounce.0.0.in
05:50 PM Tom_L: debounce.0.1.in
05:50 PM Tom_L: etc
05:51 PM Tom_L: net in-home-x debounce.0.0.in <= hm2_[HOSTMOT2](BOARD).0.gpio.046.in
05:51 PM Tom_L: net out-home-x debounce.0.0.out => joint.0.home-sw-in joint.0.pos-lim-sw-in
05:51 PM Tom_L: then set the delay for them
05:52 PM Splat7847[m]: Yeah I figured it was something like that I just hadn't verified that yet..
05:52 PM Tom_L: typical switch debounce is in the range of 20-50ms depending on the switch
05:54 PM Splat7847[m]: These are the typical mechanical lever type switches.. I really want to switch over to a non contact type but it doesn't seem as straight forward
05:58 PM roguish[m]: _discord_313209880318312448[m]: most important thing with switches is to be repeatable
05:59 PM Tom_L: yeah if you don't wanna use a comp you can debounce with a couple passives
06:00 PM Tom_L: https://www.circuitbasics.com/switch-debouncing/
06:03 PM Splat7847[m]: They are repeatable.. until they break which is likely to happen at some point due to being pressed by the CNC router.. it could be the springs or something else that goes.. I bought some non contact sensors.. but then realised they didn't sense anybody the CNC router.. so on top of needing brackets to hold them they needed something to trigger them being mounted as well
06:07 PM roguish[m]: I use pretty inexpensive chinese limit swithed on y and z, and optical switches on X. no problems that I am aware of.
06:08 PM Tom_L: mine are cheap too but so far quite repeatable
06:12 PM Splat7847[m]: Yeah.. I just know they can break.. not when.. but they are easy to replace when the times comes
06:14 PM Splat7847[m]: The way it seems to go is they work fine for years or you break one within a week of putting it in place.. or that could just be me..
06:19 PM CaptHindsight[m]: https://www.youtube.com/watch?v=YkVF6UbozR0 it's interesting that nobody has been able to automate fabrication like this
06:21 PM sandra[m] is now known as sandra4962[m]
06:38 PM XXCoder: who can edit http://linuxcnc.org/community/ page?
06:49 PM Tom_L: xx jt
06:50 PM Tom_L: capn's fascinated with turning glass lately
06:50 PM XXCoder: yo
06:50 PM XXCoder: interesting video
06:51 PM Tom_L: CaptHindsight[m], watch a lightbulb line
06:51 PM Tom_L: they do quite a few things
06:51 PM Tom_L: i imagine the heat needs to be controlled better in your video though
06:52 PM CaptHindsight[m]: light bulbs and bottles and maybe some vacuum tubes is about all
06:52 PM Tom_L: some artisan things just need human touch
06:53 PM CaptHindsight[m]: nah, you're just lazy :)
06:53 PM Tom_L: never been acused of that
06:54 PM CaptHindsight[m]: I'm just working on some glass automation
06:54 PM CaptHindsight[m]: and a lot hasn't been yet
06:54 PM Tom_L: i know
06:54 PM Tom_L: you mentioned it the other day
06:54 PM Tom_L: more room for tons of patents then!
06:55 PM CaptHindsight[m]: I didn't mean to interrupt your boring metal removal
06:55 PM Tom_L: glass reprap
06:56 PM CaptHindsight[m]: how open source does it have to be to block a patent?
06:56 PM Tom_L: ask my lawyer not me
06:56 PM CaptHindsight[m]: all the examiner has to do is ignore public disclosure
06:56 PM CaptHindsight[m]: so you have to patent and open source
06:58 PM mrec: opensource is not using any code just implementing it
06:58 PM mrec: the binary form might be a bit shady though as far as I understand
06:58 PM mrec: (from the legal point of view)
06:59 PM mrec: parallel to that in Germany everyone is allowed to do the home electric installation -- but you are not allowed to use it without the official review of a certified "master" electrician
06:59 PM CaptHindsight[m]: on to to wood projects....
07:00 PM CaptHindsight[m]: CNC wood lathe to make hash and similar pipes
07:00 PM XXCoder: Tom_L: thanks
07:00 PM XXCoder: JT-Shop: could you edit communty page to update discord url?
07:00 PM CaptHindsight[m]: CNC corn cob pipes are another
07:01 PM CaptHindsight[m]: with all the new weed laws old smoker tech is taking back off again
07:02 PM CaptHindsight[m]: https://youtu.be/4p-PkliZfvw?t=220
07:09 PM CaptHindsight[m]: wood chip removal and cleanup can be a pain on CNC
07:10 PM * roycroft is still doing his wood project
07:10 PM roycroft: i'm almost done sanding the panels i cut for my drawer sides, but that is the easy part - i still have to cut them up into hundreds of parts, and then do all the joinery work
07:12 PM roycroft: but right now, it's time for some thai food with friends
07:12 PM * Thorhian7490[m] uploaded a video: (1155KiB) < https://libera.ems.host/_matrix/media/r0/download/jauriarts.org/oXBMRIutbQPqAUrCKKJmyVLk/IMG_5967.mov >
07:13 PM Thorhian7490[m]: ZincBoy[CA, ON] To do a sanity check, I plugged the spindle enable pin directly to ground. It spins lol.
07:13 PM * roycroft keeps his priorities straight
07:18 PM Tom_L: Thorhian7490[m], so it's active low
07:19 PM Thorhian7490[m]: Yep, like zinc told me.
07:19 PM CaptHindsight[m]: https://youtu.be/O98692KZbWI?t=46
07:19 PM Tom_L: missed that part but.. ok
07:22 PM CaptHindsight[m]: howto add a cheap drill press to a CNC wood lathe
07:22 PM Tom_L: i could do that scroll on my rotary
07:24 PM CaptHindsight[m]: no ATC's on these
07:24 PM Tom_L: i noticed the ATC overshot too
07:25 PM Tom_L: wonder why
07:25 PM CaptHindsight[m]: https://youtu.be/_xZOoNdckTo?t=60 look at the massive material remover tool
07:26 PM Tom_L: don't hit a nail
07:26 PM Tom_L: would be rather costly to replace all the inserts
07:26 PM CaptHindsight[m]: looks like it's for removing bark from trees
07:26 PM CaptHindsight[m]: not shaping a table leg
07:27 PM Tom_L: damn expensive tool for a leg
07:27 PM Tom_L: the motor is about 5x bigger than it needs to be for that too
07:28 PM Tom_L: but
07:28 PM CaptHindsight[m]: it looks like they used to just sell a lathe and a drill press, then got the idea... what if you put the two together
07:28 PM Tom_L: who knows, mabe somebody will want a Ti table leg
07:29 PM CaptHindsight[m]: 5x bigger Chinese is probably about the right size
07:29 PM CloudEvil: I suspect that is a stock planer/jointer head
07:29 PM Tom_L: gee, i think i'll convert my scope stand into a live 5th axis http://tom-itx.no-ip.biz:81/~webpage/scope/scope1.jpg
07:30 PM Tom_L: sry, it reminded me of that
07:31 PM CaptHindsight[m]: well if you mention how to do it properly you get accused of being an "elitist"
07:33 PM XXCoder: wouldnt want to be onme replacing all those inserts
07:34 PM CaptHindsight[m]: gummed up in sawdust
07:35 PM XXCoder: https://youtu.be/50UtHTSGE24
07:35 PM XXCoder: prety cool
07:39 PM CaptHindsight[m]: the problem is making a square cyclone
07:40 PM XXCoder: that one apparently was utter failure
07:41 PM CloudEvil: On a related topic - I've been wondering about shopvac equivalent double acting triple cylinder low-rev air pumps, using fixed geometry linkages to keep the pistons from hitting the bores.
07:41 PM Tom_L: so why did i bother clicking...
07:42 PM XXCoder: tom he makes 4 different designs
07:42 PM XXCoder: one was square one that slows air down. that one was a fail
07:42 PM Tom_L: now you tell me !
07:42 PM Tom_L: :)
07:43 PM CaptHindsight[m]: howto reduce the kinetic energy of the solids but not the gas?
07:43 PM XXCoder: lol
07:44 PM CaptHindsight[m]: vacuum bong
07:44 PM Tom_L: let a black hole accelerate it
07:44 PM XXCoder: loss of air. dont seal your house
07:44 PM Tom_L: i didn't
07:44 PM Tom_L: i like fresh air in the dead of winter :)
07:44 PM CaptHindsight[m]: vacuum with an actual vacuum
07:45 PM XXCoder: yeah, if theres any actual portal tech, we'd use em as free vacuum sources lol
07:45 PM XXCoder: let earth air slowly drain :P
07:45 PM Tom_L: capture lightening and solve the energy crisis too
07:46 PM Tom_L: your tesla need a recharge? BOOM!
07:46 PM CaptHindsight[m]: https://youtu.be/O75Mu1fdW3E?t=14
07:47 PM CaptHindsight[m]: they confuse the dust so that it doesn't known where it is going and just gives up
07:49 PM CaptHindsight[m]: https://www.youtube.com/watch?v=bS2QPDEt284
07:51 PM ZincBoy[CAON]066: cyclone separator design is pretty settled and the problem with most attempts is that they don't have the ratio between the diameter and taper length. https://www.clearvuecyclones.com/ used to have a bunch of stuff on the cyclone design but I don't know if they still do.
07:52 PM XXCoder: wet stage. interesting
07:53 PM XXCoder: capt he really needs a 3d printer lol
07:55 PM XXCoder: cone idea is nice one
07:55 PM XXCoder: cd holder, not so much
07:57 PM CaptHindsight[m]: cyclone, water filter, electrostatic filter, fiber filter, graphene filter
07:58 PM XXCoder: I guess he makes do what he can access
07:59 PM Tom_L: https://www.youtube.com/watch?v=tvVj6fx6MNI
08:00 PM Tom_L: everbody else is posting yt, i didn't wanna feel left out
08:58 PM Thorhian7490[m]: I've managed to turn on my spindle using HAL :)
09:04 PM Thorhian7490[m]: However, I still can't seem to figure out how to use the spinout on my 7i76 properly lol. I've enabled spinena, which the the manual says should activate spinout. Anyone got any advice? I think spinning at 25 RPM isn't very useful for my machine lol.
09:05 PM Thorhian7490[m]: I'm just using halconfig ATM to manually set values.
09:39 PM Tom_L: the 7i76 is fairly new and i'm not familiar with that function
09:40 PM Tom_L: Thorhian7490[m], is that the analog signal out to the spindle?
09:41 PM Thorhian7490[m]: Yes. I'm feeding the the mesa board 0 and 10V for that analog output.
09:41 PM Thorhian7490[m]: Also, the 7i76 is new?
09:41 PM Tom_L: if it is, you need to adjust the scale for the 10v range to match the rpm of your spindle
09:41 PM Tom_L: maybe i'm thinking of another board...
09:41 PM Tom_L: 7i96 maybe?
09:41 PM Tom_L: i forget...
09:42 PM Tom_L: one sec on the scale..
09:43 PM Tom_L: i actually measured the max voltage out on mine and scaled that instead of 10v
09:43 PM Tom_L: it was still pretty close to 10
09:43 PM Thorhian7490[m]: Yeah, right now I'm just trying to set the output voltage manually using halconfig while my LCNC config is running. What values are good for that hal-pin if I just want to set it 10V?
09:44 PM pcw---home: Do you have a 10V supply?
09:44 PM Tom_L: it's likely a parameter in your amp
09:45 PM Thorhian7490[m]: I'm using my 12V supply pcw---home, but with a voltage divider to bring it down to 10. The lower line is just hooked up to the ground of the 12V PSU.
09:47 PM pcw---home: I would use 12V, and scale the output in hal (a series resistor will add non-linearity)
09:47 PM pcw---home: (because the load changes based on PWM)
09:47 PM Thorhian7490[m]: Oh. Also, PWM? I'm not using PWM.
09:48 PM pcw---home: Well you are but its not visible in hal
09:49 PM Thorhian7490[m]: Oh. Is that "digital pot" actually using PWM under the surface?
09:49 PM Tom_L: i also used a 'near' component so the rpm didn't bounce around the setpoint
09:49 PM pcw---home: Yes, the 7I76 isolation circuitry uses PWM
09:49 PM Tom_L: you use pwmgen for that?
09:50 PM Thorhian7490[m]: Then that might be messing with the "pot" then? The voltage to the servo drive doesn't change right now whatever I set the pin to.
09:50 PM Tom_L: i used an external pot as a divider and a 10v source to initially set mine up
09:50 PM pcw---home: So if you set max_scale to the calculated RPM at 12V and max_limit to the RPM at 10V you should be scaled properly
09:51 PM pcw---home: (and the output will be bound to 10V)
09:51 PM Thorhian7490[m]: Okay. Ill do that and see if the spinout still isn't changing then.
09:52 PM pcw---home: Tom_L: The 7I76 uses a DSPIC to generate the analog PWM
09:52 PM Tom_L: ok
09:52 PM Thorhian7490[m]: Thanks @pcw---home :) Hopefully this fixes things?
09:52 PM Tom_L: til the next one
09:53 PM pcw---home: watch the spinout spinena pins (and the scale/limit params)
09:53 PM pcw---home: (with halshow etc)
09:53 PM Tom_L: is that the same circuit as your single channel spin board?
09:55 PM Thorhian7490[m]: Am I correct in that the spinena pin needs to be set to 1/true for the analog output to work pcw---home?
09:59 PM pcw---home: Yes
09:59 PM pcw---home: Tom_l yes
10:00 PM Tom_L: Thorhian7490[m], if you're running a vfd you may need to set the Rated Speed Setting for the max rpm of the motor
10:02 PM Thorhian7490[m]: It's a servo drive already setup to be paired with this motor. It won't go beyond 3000 RPM, even when I manually try to tell it to do so using the driver's UI.
10:02 PM Tom_L: ok
10:03 PM Tom_L: mine was off quite a bit when i got it
10:21 PM pcw---home: Newer isolated analog out circuits like on the 7I96S use a different (simpler) circuit
10:23 PM pcw---home: and allow higher voltages (7I96S is good to about 20V) and lower current draw
10:26 PM Thorhian7490[m]: Oh, that's nice. I wish the 7i76 could handle -10 to 10V lol. I think there might be way to configure my drive to do 0-10V for both directions though.
10:31 PM pcw---home: Many VFDs have a 5V full scale option
10:32 PM sandra4962[m]: You could add a op-amp circuit to swing the 0-5v to -10 to 10v if you really need it.
10:36 PM sandra4962[m]: w2aew on youtube has a nice video on setting up op-amp scaling
10:36 PM sandra4962[m]: https://www.youtube.com/watch?v=OlhN7ADpKds&list=PLlCUoEDzAPseIypFKY-vfEOqImyo249Cb&index=1&t=135s&ab_channel=w2aew
11:12 PM CaptHindsight[m]: https://www.amazon.com/Three-Jaw-Chuck-Alloy-3-Jaw-Accessory/dp/B08KCR7RH5
11:12 PM XXCoder: is it made from zinc?
11:13 PM CaptHindsight[m]: for $24 and some cleanup it might be true enough to hold wood, plastic and glass
11:13 PM CaptHindsight[m]: yeah cast zinc
11:13 PM XXCoder: whole thing or just jaws
11:14 PM CaptHindsight[m]: whole thing
11:14 PM XXCoder: interesting
11:15 PM CaptHindsight[m]: would be better to get them before they machine them
11:15 PM XXCoder: well I do plan to 3d print one
11:15 PM XXCoder: not to actually use in machine but for fun
11:17 PM CaptHindsight[m]: look at making a low cost hobby lathe for soft materials and glass
11:17 PM CaptHindsight[m]: s/look/looking/
11:18 PM CaptHindsight[m]: made in USA thing
11:18 PM CaptHindsight[m]: I have a plant that does hardening just down the street
11:19 PM CaptHindsight[m]: aluminum bed with steel ways
11:19 PM CaptHindsight[m]: or polymer granite and steel ways
11:24 PM CaptHindsight[m]: https://taigtools.com/product/3-jaw-3-1-4-dia-self-centering-scroll-chuck/ $75
11:24 PM CaptHindsight[m]: steel ^^
11:25 PM CaptHindsight[m]: but if you are only cutting butter
11:25 PM XXCoder: not too bad honestly