#linuxcnc Logs
Sep 10 2025
#linuxcnc Calendar
12:22 AM Contract_Pilot is now known as Rhine_Labs
02:44 AM lcnc-relay: <meisterdippel@> goooood morning
02:49 AM lcnc-relay: <lucid.nonsense@> God morgen
02:51 AM lcnc-relay: <lucid.nonsense@> My parents are stuck in Portugal because a WWII bomb was found at Frankfurt airport apparently
03:08 AM lcnc-relay: <meisterdippel@> lucid.nonsense@: has already been removed
03:09 AM lcnc-relay: <lucid.nonsense@> Ah good, just got a message saying they've been put on another flight, but by the time they get back to Norway they'll have been up for nearly 40 hours
03:11 AM lcnc-relay: <lucid.nonsense@> This is why I will drive a long way to get a direct flight, been stuck in Amsterdam way too many times.
03:34 AM lcnc-relay: <lucid.nonsense@> meisterdippel@ if I wanted to dip my toe in RIO, whats the fanciest board currently supported.
03:34 AM lcnc-relay: <lucid.nonsense@> * supported?
04:02 AM lcnc-relay: <meisterdippel@> lucid.nonsense@: The main problem is that there are no ready-made boards available to buy.
04:02 AM lcnc-relay: I am currently testing a Mesa 7c81, which would be the first one.
04:02 AM lcnc-relay: I am still testing the pin assignment and flashing directly from the Raspberry.
04:06 AM lcnc-relay: <pink_vampire@> I can't find any cam software that support rotary cutter for fabric (to have the ability to rotate the knife on the C axis)
04:06 AM lcnc-relay: <lucid.nonsense@> meisterdippel@: Ah, I actually have a 7c81 and a 7c80 on their way from EUsurplus
04:07 AM lcnc-relay: <pink_vampire@> I am still using LPT
04:08 AM lcnc-relay: <meisterdippel@> pink_vampire@: LPT is independent of the cam software
04:08 AM lcnc-relay: <lucid.nonsense@> Don't know enough about it, but could plotter type software work
04:08 AM lcnc-relay: <lucid.nonsense@> Drag knife type of thing
04:10 AM lcnc-relay: <lucid.nonsense@> Or modify the processor in something like fusion
04:16 AM lcnc-relay: <meisterdippel@> rotary cutter is a little bit tricky, you need to calc the angle of the next line (simple), but if you have arcs or cutter offsets .....
04:16 AM lcnc-relay: <meisterdippel@> I had considered incorporating this into my cam, but I can neither test it nor do I have the time for it at the moment.
04:17 AM lcnc-relay: <meisterdippel@> if there is no arc or offset, and you can program python or so, you can build an postprocessor
04:37 AM Tom_L: morning
04:39 AM lcnc-relay: <pink_vampire@> morning tom
04:41 AM lcnc-relay: <lucid.nonsense@> Bit of trial and error with an llm might do to modify a post processor
04:41 AM lcnc-relay: <lucid.nonsense@> Morning
05:11 AM lcnc-relay: <pink_vampire@> not sure what do you mean, I am not sure how to do it.
05:15 AM lcnc-relay: <meisterdippel@> llm = AI , maybe it can build a post-processor for you
05:28 AM Deejay: hi
05:30 AM lcnc-relay: <lucid.nonsense@> pink_vampire@: Try https://www.anthropic.com/claude maybe, heard good things about it
05:30 AM lcnc-relay: <lucid.nonsense@> What CAM software have you used so far?
05:30 AM lcnc-relay: <pink_vampire@> hsmworks
05:34 AM lcnc-relay: <lucid.nonsense@> Ok, maybe one of the AI bots could help edit it's post processor for your use case, I find it often takes a few course corrections to get something useful, but quicker than searching through stackexchange for weeks
05:50 AM lcnc-relay: <pink_vampire@> this is the post processor that I am using https://paste.debian.net/hidden/9fca5cc2/
06:53 AM JT-Cave: hmm I have water on the floor of the equipment room and don't know where it came from
07:27 AM lcnc-relay: <meisterdippel@> is it yellow ? 😆
07:58 AM rdtsc-w: any pets? outdoor critter get in?
09:34 AM JT-Shop: hmm there was some almost clear jelly looking thing on top of the floor drain
09:35 AM JT-Shop: and it was water not piss
11:15 AM lcnc-relay: <willbertvaleroyant@> I am using a MESA 7i96 (not s) and have a xyyza cibfug with a BOB that I use to controle a laser.
11:15 AM lcnc-relay: Is is possible to have another stepper connected to the BOB card`?
11:15 AM lcnc-relay: <willbertvaleroyant@> * config
11:15 AM JT-Shop: yes
11:43 AM pcw-at-home: If it's the common Sainsmart 5 axis BOB, you would use 7i96_5abob_d.bit firmware
12:51 PM lcnc-relay: <willbertvaleroyant@> i have a DollaTek 5 Axis CNC Breaker Board
12:56 PM lcnc-relay: <willbertvaleroyant@> with this fm: https://forum.linuxcnc.org/39-pncconf/44383-ttl-pwm-laser-head-and-mesa-7i76?start=30
12:56 PM lcnc-relay: 7I96 (NOT 7I96S) configuration with 1 PWM
12:56 PM lcnc-relay: output on DB25 pin 2
12:56 PM lcnc-relay: 7i96_p1pd.zip
12:56 PM lcnc-relay: <willbertvaleroyant@> so as long as I dont use P2 I should be fine then.
12:58 PM lcnc-relay: <willbertvaleroyant@> can you help me with the hal config for the bob? m2_7i96.0.ssr.00.out-xx ?
01:11 PM lcnc-relay: <willbertvaleroyant@> JT-Shop: so I can have 6 steppers connected to a 7I96 if I have a BOB?
01:38 PM JT-Shop: yes if you plug it into the expansion port and use the firmware pcw said above
01:39 PM JT-Shop: you can use my mesa configuration tool to flash and make part of the configuration
02:20 PM pcw-at-work: 7i96_5abob_d.bit firmware has PWM on DB25 pin 1 and stepgens 5,6,7 on DB25 pins 2,3 4,5 6,7
02:27 PM lcnc-relay: <willbertvaleroyant@> i have this board will it work? https://www.amazon.se/-/en/dp/B07PNDXZQK?ref_=ppx_hzsearch_conn_dt_b_fed_asin_title_1
02:27 PM lcnc-relay: <willbertvaleroyant@> DollaTek 5 Axis CNC Breaker Board with Optical Clutch for Stepper Motor Driver MACH3
02:31 PM pcw-at-work: That's the Breakout the 5ABOB firmware supports
02:32 PM lcnc-relay: <willbertvaleroyant@> now I have configured the laser like this: net analogout motion.analog-out-00 => hm2_7i96.0.pwmgen.00.value
02:32 PM lcnc-relay: How would it be with this new fm?
02:32 PM pcw-at-work: yes
02:33 PM pcw-at-work: same
02:34 PM pcw-at-work: There's only one PWMgen in either case, change is that the PWMGen is on pin 1 and three stepgens have been added
02:35 PM lcnc-relay: <willbertvaleroyant@> net laser-on hm2_7i96.0.pwmgen.00.enable hm2_7i96.0.ssr.00.out-04 <= halui.machine.is-on
02:35 PM pcw-at-work: (If there's only 1 PWMGen its always pwmgen.00)
02:36 PM lcnc-relay: <willbertvaleroyant@> ok
02:36 PM lcnc-relay: <willbertvaleroyant@> but I need to chang fw? i can not user stepgens 5,6,7 with the fw I have?
02:37 PM lcnc-relay: <willbertvaleroyant@> the one you kindely gave me 2 years ago?
02:47 PM pcw-at-work: Yes, you would need to change firmware as I don't think your firmware has any stepgens on P1
02:48 PM pcw-at-work: so at the minimum you would need to change your firmware and connect your laser PWM to The BOBs pin 1 instead of pin 2
02:49 PM lcnc-relay: <willbertvaleroyant@> ok and then use what ports for the step and dir on the bob?
02:50 PM pcw-at-work: stepgens 5,6,7 on DB25 pins 2,3 4,5 6,7
02:50 PM pcw-at-work: 2=step,3=dir etc
02:51 PM pcw-at-work: (those are the BOBs X,Y,Z step/dir pins)
02:52 PM lcnc-relay: <willbertvaleroyant@> so: setp hm2_7i96.0.stepgen.05.dirsetup [JOINT_5]DIRSETUP
02:52 PM lcnc-relay: should be connected on pins 2,3?
02:53 PM pcw-at-work: with 7i96_5abob_d.bit firmware stepgen 5 step is DB25 pin 2 and stepgen 5 dir is DB25 pin 3
02:54 PM lcnc-relay: <willbertvaleroyant@> so I change num_stepgens=5 to num_stepgens=6 and then I can use pin 2,3 as you say?
02:55 PM lcnc-relay: <willbertvaleroyant@> is there any other config I am forgetting on top of your head?
02:58 PM lcnc-relay: <willbertvaleroyant@> where can I find i96_5abob_d.bit is it part of the mesa support sw?
02:58 PM lcnc-relay: when I try to enter http://store.mesanet.com/index.php?route=product/product&product_id=311
02:58 PM lcnc-relay: My anti virus say: Website blocked due to a Trojan
02:58 PM lcnc-relay: haha can I get it from somewhere else?
03:02 PM lcnc-relay: <willbertvaleroyant@> where can I find i96_5abob_d.bit is it part of the mesa support sw?
03:06 PM lcnc-relay: <willbertvaleroyant@> a new pid of cause
03:08 PM lcnc-relay: <willbertvaleroyant@> Thanks for all the help need to take it up tomorrow again.
03:08 PM lcnc-relay: Have a great day
03:14 PM pcw-at-work: is it blocked because its a zip file?
03:15 PM pcw-at-work: Yes. you woud need to clone the an existing
03:16 PM pcw-at-work: stepgen setup for the new joint/axis (both in the hal and ini files)
03:38 PM JT-Shop: if you use the mesa configuration tool it can download the firmware and flash the board
03:39 PM * JT-Shop goes back to attempting to remove the passenger side half shaft from the C3
05:24 PM JT-Shop: down to the caliper and parking brake cable to remove the trailing arm
05:40 PM Tom_L: you'll have a new C3 before long
05:41 PM JT-Shop: lol that will take a while
05:41 PM JT-Shop: the U joints looked good, the diff has a small leak on the passenger side
05:41 PM JT-Shop: we'll see what the bearing look like when I get the trailing arm off
05:46 PM _unreal_: so I am using my FLOPPY to memstick adapter for the first time
05:46 PM _unreal_: its FREAKING AMAZING
05:47 PM JT-Shop: I'm sure I can't get that excited about a floppy
05:47 PM _unreal_: slower then death but that doesnt matter. I'm recovering a computer and this is the only means I have to get large files on/off till I get the drivers onto it
05:47 PM _unreal_: heh
05:48 PM _unreal_: :S 8min for 30megs
05:48 PM JT-Shop: I am excited about track day next saturday
05:48 PM _unreal_: GOD In dialup days this would have been amazing
05:50 PM JT-Shop: amazing will be how many G's I can pull with the Cup 2 tires
05:50 PM Tom_L: before tha ass end breaks loose
05:51 PM JT-Shop: actually I think the front will break first unless I plant it before the turn
05:51 PM _unreal_: JT-Shop, I'm trying to recover files from my late fathers old computers. I'm down to 25 computers
05:51 PM JT-Shop: that's a lot of recovery
05:52 PM _unreal_: problem is a lot of them have damage etc... accidental but poor choices and hording piles :/
05:52 PM JT-Shop: what do you hope to recover?
05:53 PM _unreal_: photos documents what ever or just discover that there is no valuable info so I can get rid of the damn thing
05:53 PM _unreal_: things
05:53 PM JT-Shop: that makes sense
05:53 PM _unreal_: the back story you dont know. a lot of his computers are from the companies he worked for and mostly security based
05:54 PM JT-Shop: I can't decide if I want to toss my dad's flight logs or not... they date back to 1950
05:54 PM _unreal_: so the HD's are keyed to the motherboards and you cant add in stuff or the description keys wont work to access the HD
05:54 PM _unreal_: I'd offer them to an arciver
05:54 PM _unreal_: archiver
05:54 PM lcnc-relay: <skunkworks8841@> I burned recepts from my parents house that dated back to the 70's
05:55 PM lcnc-relay: <skunkworks8841@> I probably could have calculated how much the materials costed for this house.
05:55 PM lcnc-relay: <skunkworks8841@> had the original building permit.
05:55 PM _unreal_: I had to get rid of 72 plastic totes filled with his old work papers dating back to the 70's all the way till the mid 2k teens
05:56 PM _unreal_: and all of them in the two different attics
05:57 PM _unreal_: what a pain getting basically tree's out of the attics.
05:57 PM _unreal_: woohoo 2min left of transfer
05:58 PM _unreal_: because my dad did high end director level security for multi fortune 100 companies. these computers are all "secure"
05:58 PM _unreal_: more like nutty tinfil had secure
05:58 PM _unreal_: hat
05:58 PM lcnc-relay: <lucid.nonsense@> When I bought the house I'm currently livong in, it came with the original deed, it has thenoriginal red wax seal
05:59 PM lcnc-relay: <lucid.nonsense@> * the original
05:59 PM _unreal_: heh, I was EMAILED my deed, had to print it
05:59 PM _unreal_: PALM TO FACE
06:00 PM lcnc-relay: <lucid.nonsense@> It was written in fountain pen and dated 1895
06:00 PM JT-Shop: are you in England?
06:00 PM lcnc-relay: <lucid.nonsense@> Close
06:00 PM lcnc-relay: <lucid.nonsense@> Wales
06:01 PM JT-Shop: nice, I had a friend that worked with me in west africa from Wales
06:01 PM JT-Shop: got to visit him once on the way home
06:02 PM lcnc-relay: <lucid.nonsense@> Cool
06:02 PM lcnc-relay: <lucid.nonsense@> I'm born and raised in Norway, moved to the UK at 24
06:02 PM JT-Shop: he was a service hand and I was part of the rig crew so we had different schedules
06:03 PM JT-Shop: rig crew worked 28 days then had 28 days off
06:03 PM JT-Shop: I did that for 3 years
06:03 PM lcnc-relay: <lucid.nonsense@> Shell?
06:03 PM JT-Shop: Gulf iirc
06:03 PM lcnc-relay: <lucid.nonsense@> K
06:04 PM JT-Shop: off of Zaire and other places near by
06:04 PM lcnc-relay: <lucid.nonsense@> I'm from Stavanger, the oil capital of Norway
06:04 PM JT-Shop: Angola was Gulf for sure
06:04 PM JT-Shop: but that's been a long long time ago
06:05 PM * JT-Shop calls it a day
06:05 PM _unreal_: my god FINALLY its so nice to be bypassing his BS security and getting pictures and videos off this computer.
06:06 PM _unreal_: got about 30 gigs of home videos from his DIDITAL SD video camera
06:06 PM _unreal_: all in 300 RES :S but from the early early 2k's so it was stupid expensive at the time
06:24 PM _unreal_: FINALLY!!! I have USB write access. now I can with luck connect thumb drives or what ever and start trasnfering all these files off in a reasonable manner
06:24 PM _unreal_: I thought I was going to have to transfer stuff using serial lap-link
06:44 PM _unreal_: NOW its working
06:45 PM _unreal_: OMG usb1.1 I've got about 14 hrs of file transfer...
06:46 PM _unreal_: every time I try to add in hardware thats fast it breaks the HD encryption. and I can no longer access the drive, hell cant even boot
06:46 PM _unreal_: so annoying
06:47 PM _unreal_: this is one computer I can not wait to get rid of. pentium 2
06:49 PM xxcoder: just got rotatary dehumidifer
06:50 PM xxcoder: its not great for most places, but here when its winter its high humid, it should be amazing.
06:50 PM _unreal_: main issue is that I dont have the bios passward, I cant clear the bios because I'll loose access to the encrypted drives. and everything is locked down in the bios ARG.
06:50 PM _unreal_: nice
08:01 PM lcnc-relay: <Mister Wallace> Are kicad symbols available for the mesa boards?
08:03 PM lcnc-relay: <Mister Wallace> Specifically looking for 7I76EU
08:51 PM xxcoder: arent you able to make custom boards?
09:07 PM lcnc-relay: <Mister Wallace> Sure, just curious if anyone else has them already built
09:08 PM xxcoder: ok. yeah good idea to quick question and hope :D
09:08 PM xxcoder: but seems theres a way to make one, so thats good backup in least
09:09 PM lcnc-relay: <Mister Wallace> In other news, looks like I actually need a different board if I want to interface with the existing drives in the Bandit
09:09 PM lcnc-relay: <Mister Wallace> I didn’t fully grasp before that they don’t use step and direction
09:09 PM lcnc-relay: <Mister Wallace> So I need some additional pins and linuxcnc in table mode
09:10 PM xxcoder: I uppose can test one part a time, if you dont have enough pins
09:10 PM xxcoder: confirm that you cant cover all with current board you has.
09:10 PM lcnc-relay: <Mister Wallace> I haven’t bought a board yet
09:11 PM lcnc-relay: <Mister Wallace> So I’m good
09:11 PM xxcoder: ahh ok
09:13 PM pcw-at-home: Yeah with 4 pins per drive, you can do 2.5 Axis with a 7I76EU...
09:17 PM pcw-at-home: You could add one of those cheap "5 Axis" parallel port BOBs to get 10 more buffered signals
09:17 PM xxcoder: thats an idea. cheap way to add pins, for less critical pins
09:18 PM lcnc-relay: <Mister Wallace> Why not do like 7I92TM+7I75?
09:19 PM pcw-at-home: Its probably OK but 3.3V signals
09:20 PM pcw-at-home: (the 7I75 has no buffering just protection)
09:20 PM pcw-at-home: 7I92TM plus 2x Cheap 5 Axis BOB maybe
09:22 PM pcw-at-home: That gives you 20 5V buffered step/dir like pins plus some protected inputs
09:23 PM lcnc-relay: <Mister Wallace> Why is the buffer needed here?
09:24 PM lcnc-relay: <Mister Wallace> Also does mesa just have a board that can also do the buffering?
09:24 PM pcw-at-home: Not sure what the interface hardware is and levels required
09:25 PM pcw-at-home: a 7I75 may be fine if 3.3V signals are OK
09:27 PM pcw-at-home: a 7I88 would be a buffer option (16x 5V buffered signals) but its fancy differential signals are wasted
09:28 PM pcw-at-home: Seems like a simple PCB (or wire wrapped card) with a couple octal buffers and the right connectors to match the drive would be ideal
09:30 PM pcw-at-home: Heck, you could even try this for 1 or 2 axis with a parallel port
09:30 PM lcnc-relay: <Mister Wallace> pcw-at-home: Just to clarify, why can it only do 2.5 axis?
09:32 PM pcw-at-home: the 7I76EU has 10 step/dir pins so 10/4 = 2.5
09:47 PM lcnc-relay: <Mister Wallace> Ah yeah I see now, 2 pins per coil
09:48 PM lcnc-relay: <Mister Wallace> 8+2 per drive
10:01 PM lcnc-relay: <Mister Wallace> https://jauriarts.org/_heisenbridge/media/matrix.org/xjWUzbnqknUYmwFSVugOmpbz/Rjo2tV5lSWQ/IMG_0495.jpeg
10:01 PM lcnc-relay: Oh hey