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  • Tchefter
  • Tchefter's Avatar
20 Dec 2024 05:04
Replied by Tchefter on topic Linux CNC auf Virtualbox Simulation

Linux CNC auf Virtualbox Simulation

Category: Deutsch

axis_mm.ini sagt mir nichts.

Seine Maschine muss dann wohl "axis_mm" heißen, da i.d.R. die "ini" nach dem Namen der Maschinen benannt wird, wie auch die "hal" usw.
  • Cant do this anymore bye all
  • Cant do this anymore bye all's Avatar
20 Dec 2024 04:54
Replied by Cant do this anymore bye all on topic Some new Linux CNC board by Bigtreetech looks cool still trying to get more info

Some new Linux CNC board by Bigtreetech looks cool still trying to get more info

Category: Computers and Hardware

Actually I doubtful of the Linuxcnc compatibility, and unless they come up with a driver..

Also I don't see any Linuxcnc compatible interfaces, personally I wouldn't trust wifi for running a cnc machine based on the Linuxcnc model. Maybe CAN or SPI but that would limit the choices of the computer platform.
  • abdulasis12
  • abdulasis12
20 Dec 2024 04:51
Replied by abdulasis12 on topic Skew correction/perpendicularity correction (millkins or millkins_xyz)

Skew correction/perpendicularity correction (millkins or millkins_xyz)

Category: Basic Configuration

Hi
I have question.I would like to know if I can use skewkins together with xyzac-trt-kins. If it is possible to use them together, what steps do I need to take? Please provide me with some guidance.

Thank you,
Asis
  • IronManDylan
  • IronManDylan
20 Dec 2024 04:28
Replied by IronManDylan on topic Fast Hole EDM from Hacked Parts

Fast Hole EDM from Hacked Parts

Category: General LinuxCNC Questions

Hi,

So I spent the rest of the day trying to figure out how to get a gcode command to turn a relay on and off using the output pin from the mesa 7i96s.  The relay controls the pumps and it needs to be turned on before I start EDMing.  I think getting a simple relay to work before trying to mess with a PID loop is best. I am not sure if it is relevant but the pin is TB3 pin 14 based on the mesa 7i96s manual.  

I believe what I need to do is have a user defined mcode (this allows me to easily turn the pumps on and off and I can also modify my gcode post processor to turn this off and on after I output any drilling operations).  The name of the file is M101. I will also write a M102 to turn the pumps off once I get this first one working. And btw this is just placed in the main folder that is this machine.  Here is what is in the M101 file:

#!/bin/bash
halcmd setp motion.digital-out-00 true
chmod +x M101
exit 0


I am also trying to modify the .hal file to actually call up the mcode command. Here is what I have in the .hal file:
setp hm2_7i96.0.output.00 true
net edm-pump-output <= motion.digital-out-00
net edm-pump-output => hm2_7i96.0.output.00 true

Something is not right though because I am getting the debug error "paramater or pin 'hm2_7i96.0.output.00' not found" and the machine won't boot up (I did get it to boot up after flashing though).

I am going to look at this with fresh eyes in the morning.  But this is not an area I am proficient in and I am not finding a webpage that clearly lays out the syntax.  I get that the pin needs to be set, and then connected.  But I really do not know how to do that.  So if someone would be willing to point out what I have wrong I would really really appreciate it.  

Thank you.

Best,
-Dylan
  • dbtayl
  • dbtayl
20 Dec 2024 03:12
Replied by dbtayl on topic 4 thou error on a small part

4 thou error on a small part

Category: General LinuxCNC Questions

(for context for anybody not reading the gcode: he's doing a profile to 0.500 wide all around the part, then machining to 12mm by taking another 2 cuts at a higher Z level- one roughing, one finishing, taking all of the 0.7mm from one side of the part)

First thing that strikes me is 0.5 IPM feed seems really low at 1500 RPM. If you're using a 4 flute cutter, that's 0.00008 IPT (not a typo- under a tenth chip load). Possibly nothing to do with anything, but I'd bump up the feed quite a bit. I often finish at 10x that chipload (albeit in aluminum, but that's not going to change the scallop height), roughing obviously at more. Seems like you're going to burn up endmills like that. Check out a speeds/feeds calculator (GWizard, FSWizard, HSMAdvisor, etc.) if you haven't.

Does the DRO agree when you're cutting metal, not just air?

Do the DRO scales feed back into LinuxCNC?

What size stock are you using? I guess the 1018 is cold-rolled? 1018 CRS is notorious AFAIK for having internal stresses that cause the part to "banana", especially if you remove more material from one side than the other. I don't know how you're measuring, but if you're putting caliper jaws across the entire length of the 12mm dimension, that could be throwing it off.

Do you get closer to your desired result if you re-cut the same part (eg, run the program twice without changing the stock/setup)? Or does it cut a little more off the 12mm dimension? You could alternately add a "spring pass" to your gcode- just repeat the 12mm finishing cut.


The gcode looks OK to me.

You can try cutting in a different/easier material (eg, plastic or aluminum, adjusting the speeds/feeds accordingly) to see if the dimensions come out the same- that would presumably help narrow down deflection vs some other problem.


Finally, note that especially steel-cutting end mills are commonly up to 0.002" under the nominal diameter (eg, www.destinytool.com/raptor-dvh). May or may not have anything to do with anything, given your 0.500" dimension is right... but it could be an undersized end mill + backlash cancelling each other out. When you cut on one side for the 12mm dimension, you wouldn't have that effect.
  • Cncninja
  • Cncninja
20 Dec 2024 02:41
Some new Linux CNC board by Bigtreetech looks cool still trying to get more info was created by Cncninja

Some new Linux CNC board by Bigtreetech looks cool still trying to get more info

Category: Computers and Hardware

So, I just watched a video showing off this new CNC board from BigtreeTech. The video said it works with LinuxCNC, and I see it supports two other firmware as well. Has anyone worked with them on this? 
biqu.equipment/collections/control-board...treetech-scylla-v1-0

 
  • tommylight
  • tommylight's Avatar
20 Dec 2024 02:06
Replied by tommylight on topic Some 3D printing advice to start this section

Some 3D printing advice to start this section

Category: Additive Manufacturing

3D printers seem to be the tool you didn't know you needed until after you have owned on.

I bought one as i needed a case for some electronics i built for a friend, needed it quick so had no time to build one, then i bought 11 more as i kept finding them with wrong prices on a local online store, like 3 to 4 times lower than in china!!! Gave some to friends (free), dismantled some and sold some, then built 5 more Voron 2.4R2's for me and 6 Voron Legacy's for some friends.
  • spicer
  • spicer's Avatar
20 Dec 2024 01:24
Replied by spicer on topic Linux CNC auf Virtualbox Simulation

Linux CNC auf Virtualbox Simulation

Category: Deutsch

axis_mm.ini sagt mir nichts.
  • mBender
  • mBender
20 Dec 2024 00:54
Replied by mBender on topic LinuxCNC-RIO - RealtimeIO for LinuxCNC based on FPGA (ICE40 / ECP5)

LinuxCNC-RIO - RealtimeIO for LinuxCNC based on FPGA (ICE40 / ECP5)

Category: Computers and Hardware

Ah, ok. I guess the first thing for the wiki was identified. How to help with documentation. :)
  • PCW
  • PCW's Avatar
20 Dec 2024 00:51
Replied by PCW on topic linuxcnc 2.9.2 (live) on the intel n100 cpu

linuxcnc 2.9.2 (live) on the intel n100 cpu

Category: Computers and Hardware

Did you try isolcpus=3

isolcpus 1,2,3 leaves only one CPU for non-realtime tasks so
would likely be painfully slow...
  • edmarwjr
  • edmarwjr
20 Dec 2024 00:47
4 thou error on a small part was created by edmarwjr

4 thou error on a small part

Category: General LinuxCNC Questions

Hello,
I have a Precision Matheus 728, with Linuxcnc 2.9.2, Mesa cards, and gmoccapy GUI

My milling vise came with a slot key (0.5000"), that does not fit my milling machine (12mm slot).I designed a new key on FreeCAD 1.0. Generated G-code. Used it without issues.

But the new key did not fit the milling machine slot.

Using a micrometer, the base of the key measures exactly 0.5000"
But the slot side measures 0.476x (It should be 0.4724).
I am using a 3/8" end mill (carbide, new)
Sotck is 1018 steel, Spindle 1500, Horz feed = 0.5 ipm

I don't understand why the first operation produces the expected result, but the second is 4 thou thicker than it should.
Does anyone can give me an insight on what could be wrong ?

Details:
- The 3/8 endmill is loaded in the beginning of the program.
- The first operations makes a full profile around the stock and produces a dead on 0.5000 depth. (Clockwise, 3 thou depth of cut on last pass)
- All relevant operations are executed using the same tool, same speed and feeds. There are a few M codes between operations though.
- I milled a second part with exact same results (one dimension dead on, the other 4 thou off)
- For the second part I also used a "profile" operation (also Clockwise, 10 thou depth of cut on last pass). The first was done wirh an "adaptive" operation
- The attached G-code is the one I used in the second part ("profile" operation)
- As a sanity check, I run the program again cutting "air". Annotaded the DRO values for Y at the relevant moments, and everything seems correct.
DRO Y abs:
5.4375
4.5625 -> less tool -> 0.5000
and
4.5901 -> less tool -> 0.4724

Is it possible the 10 thou depth of cut on last operation (versus 3 on the first operatiion) could cause a deflection of 4 thou in the column ?
I can only measure a few tenths using my hands
Thanks in advance for any suggestions.
Edmar
 
  • itsbrian
  • itsbrian
19 Dec 2024 23:56
Replied by itsbrian on topic linuxcnc 2.9.2 (live) on the intel n100 cpu

linuxcnc 2.9.2 (live) on the intel n100 cpu

Category: Computers and Hardware

Adding my results since this is the most popular thread for 'LinuxCNC N100' on Google Search.

Hardware
  • PC: Topton 12th Gen Fanless Mini Computer Alder Lake N100 Quad Core Dual LAN 2 Industrial PC
  • Vendor: Topton Direct Store on AliExpress
  • Specs: 8GB DDR4, 128GB NVMe, WiFi, BT
  • Price: $142.60 total after some Black Friday discounts
  • Reason:
    • Old PC gave out due to overheat from dust / woodchips
    • Wanted new and cheap PC compared to the old/used stuff I've been always using.
    • I wanted an out the box, dual NIC device so that I can remote into it from my network and also have it connected to the Mesa Card. I knew about this chipset due to it being popular in the homelab space for those that run their own router (pfSense, OPNsense) since most devices that use this chipset have multiple NICs. Seeing this thread pop up in the search and the low latency results made it an easy choice for me.
    • Fanless, hopefully this prevents overheat in future as it'll be easier for me to clean. Having it now in an easily accessible area due to its small form factor will also help with that.
Latency test command
latency-histogram --nobase --sbinsize 1000 --show

Results
Lowest Latency Settings - 17.0 microseconds (μs) max
  • Test was run on an actual install of LinuxCNC 2.9.3 ISO image (not Live CD)
  • The following BIOS settings were Disabled
    • C-States
    • Virtualization
    • *Speed Shift
    • Speed Step
    • Race to Halt
  • isolcpus=1,2,3
  • *Stress tested single core by running
    yes > /dev/null
  • glxgears x 8
Notes
  • *Disabling Speed Shift gave me the best results by far, but made PC basically unusable for multi-tasking. I was going to have multiple YouTube videos playing, but trying to load it was unbearable so I decided just to stress test the CPU using the command line. With Speed Shift enabled made the PC great for multi-tasking but my latency increased to a steady 50 μs running glxgears x 8 and 2 Youtube videos. I don't intend on using this PC for anything else besides LinuxCNC, but it is cool to know I can multi-task on it while it is running as 50 μs suitable with a Mesa card.
  • Live CD proportionally gets worse results by about ~15 μs. The same test above got me 30 μs.
  • I was not able to install LinuxCNC 2.8.4 image due to a lot of driver issues. I was hoping to do a brainless PC swap, but I guess this gave me reason to upgrade.
 

Overall this is a cool little device, see attachments for pics. My biggest worry is buying a PC from an unknown OEM and future BIOS support. I guess we'll see if this stands the test of time. Otherwise, I am going back to my old, go-to, decommissioned Enterprise PCs.
  • my1987toyota
  • my1987toyota's Avatar
19 Dec 2024 23:35
Replied by my1987toyota on topic Some 3D printing advice to start this section

Some 3D printing advice to start this section

Category: Additive Manufacturing

3D printers seem to be the tool you didn't know you needed until after you have owned on.

machinedude  it's been 2 years later how has the machine held up?
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