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  • my1987toyota
  • my1987toyota's Avatar
02 Mar 2025 00:01 - 02 Mar 2025 02:51
Replied by my1987toyota on topic hot wire cutting

hot wire cutting

Category: General LinuxCNC Questions

ok so to me it looks like a simple photo coupler digital output. That said I don't know how your system is
put together. I use Mesa boards for control when Linuxcnc is involved. With that said I can only give
a general direction. If it were me I would wire the photo coupler output into an input pin, go through the
linuxcnc 2.9 manual (section 11.3.2) use the pause / resume example and test from there. When I
was first starting out with Linuxcnc I would set up multiple different profiles for the same machine
then add one or 2 things in to see how pncconf or stepconf would write the connections and play
around with it from there.
  • JT
  • JT's Avatar
01 Mar 2025 23:54
Replied by JT on topic Mesa hm2/hm2_7i96s.0: error finishing read

Mesa hm2/hm2_7i96s.0: error finishing read

Category: Driver Boards

yes currently I have quiet isolcpus=11 idle=poll

JT
  • beauxnez
  • beauxnez
01 Mar 2025 23:29 - 01 Mar 2025 23:30
Replied by beauxnez on topic ESP32/S2/S3 LinuxCNC Controller (6 axis hardware step gen), USB plug-and-play

ESP32/S2/S3 LinuxCNC Controller (6 axis hardware step gen), USB plug-and-play

Category: Computers and Hardware

Hello, I finally managed to install the program on the card, the card responds well to ping 192.168.111.1
 the configuration of the card with 3 motors too
 I copied the .ini and .hal files into a directory under configs and opened with linuxcnc but impossible to get the emergency stop button out?
ESP32LCNC_Controller > restart
Restarting...WiFi Lost Connection!
WiFi Station Stopped!
ets Jun  8 2016 00:22:57

rst:0xc (SW_CPU_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
configsip: 0, SPIWP:0xee
clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00
mode:DIO, clock div:2
load:0x3fff0030,len:1184
load:0x40078000,len:13232
load:0x40080400,len:3028
entry 0x400805e4
P F
=================================================
==================== STARTUP ====================
=================================================

============ SPI ETH RELEASE BUILD ==============

Version: v20240714.02
Setup started..
APBFreq: 80000000
Total heap: 289676
Free heap: 263848
Total PSRAM: 0
Free PSRAM: 0
Boot Count: 0
Reading NVS Config...
NVS Config Version: 4
BOARD TYPE: 7
BOARD NAME: ESP32-WROOM-DEV

WiFi Station: Connecting to WiFi SSID: La ?
WiFi Station Started
WiFi MAC: 94:54:C5:B7:E1:E0
OTA Setup
OTA Setup Done
*** Configuring 3 motors  ***
Creating stepper 0
configuring stepper 0
attached stepper 0
stepper 0 created successfully
Creating stepper 1
configuring stepper 1
attached stepper 1
stepper 1 created successfully
Creating stepper 2
configuring stepper 2
attached stepper 2
stepper 2 created successfully
*** Motors configured successfully ****
loop_Core1_EspNowSenderControllerTask running...
WARN: ESP-NOW server is currently disabled in config
loop_Core1_ServoStatsTask running...
Setup completed successfully
setup_Core0()
WiFi Connected!
Starting Ethernet...
Ethernet Started

ETH Started
WiFi IP: 192.168.1.115
SPI Ethernet driver setup successfully
Starting Telnet server on port 23
UDP Server Listening on Port: 58000
loop_Core0_UDPSendTask running...
UDP Send connect to IP: 192.168.111.2, Port: 58001, Result: 1
loop_Core0_CommandHandlerTask running...
Attaching hw timer for ServoMovementCmds ISR
loop_Core0_InputPinHandlerTask running...
Configuring inputs...
INPUT[0] GPIO: 26, Name: 'Unused' PullUp: 1, PullDown: 0
INPUT[1] GPIO: 27, Name: 'Unused' PullUp: 1, PullDown: 0
INPUT[2] GPIO: 32, Name: 'Unused' PullUp: 1, PullDown: 0
INPUT[3] GPIO: 33, Name: 'Unused' PullUp: 1, PullDown: 0
INPUT[4] GPIO: 34, Name: 'Unused' PullUp: 1, PullDown: 0
INPUT[5] GPIO: 35, Name: 'Unused' PullUp: 1, PullDown: 0
INPUT[6] GPIO: 36, Name: 'Unused' PullUp: 1, PullDown: 0
Core0 setup completed successfully

Type 'help' to get the list of commands.
Use UP/DOWN arrows to navigate through command history.
Press TAB when typing command name to auto-complete.
ESP32LCNC_Controller > 
  • Jdolecki
  • Jdolecki
01 Mar 2025 23:24 - 01 Mar 2025 23:25
Replied by Jdolecki on topic For Sale or trade?.

For Sale or trade?.

Category: User Exchange

I thought I read somewhere the pci and pcie are not compatible.


So I don’t know if slot adapter will work.
  • persei8
  • persei8's Avatar
01 Mar 2025 22:49
Replied by persei8 on topic Parse Error

Parse Error

Category: General LinuxCNC Questions

I am having virtually the same problem, but with a twist. Using the qtvcp gcode_graphics widget, which uses qt5_graphics, I can load any .ngc file with any tool number no problem. However, when the display is a VTK render window, any ngc file that specifies a tool greater than 9 causes a gcode interp error. For example, if line 3 in the ngc file contains:
G21 G40 G49 G64 P0.03 M6 T1
it works fine. If I change the line to:
G21 G40 G49 G64 P0.03 M6 T13
it throws:
!!!interp_error=1 result=2 last_sequence_number=3
I looked for the reason in gcodemodule.cc but C++ is beyond my brain capacity.
BTW, T13 is a valid tool. If I specify an invalid tool, so long as it's less than 10, it only throws a tool not found in tool table error, which is perfectly normal. Any insights would be greatly appreciated.
Jim
 
  • rodw
  • rodw's Avatar
01 Mar 2025 22:42
Replied by rodw on topic Ethercat installation from repositories - how to step by step

Ethercat installation from repositories - how to step by step

Category: EtherCAT

try: sudo apt update and try again
It just worked for me. do you have internet access?
the script is here but you should not need it
forum.linuxcnc.org/ethercat/53785-instal...thercat-repositories
  • PCW
  • PCW's Avatar
01 Mar 2025 22:22
Replied by PCW on topic HURCO KMB-1 Control Update

HURCO KMB-1 Control Update

Category: Milling Machines

They don't _have_ to be:

0 = 7i77 #1 digital I/O
1 = 7I77 #1 analog output
2 = 7I77 #1 expansion channel

Buts that's the way the standard firmware arranges them.
  • rodw
  • rodw's Avatar
01 Mar 2025 21:58
Replied by rodw on topic Laser Head Height Sensor – Looking for a Beta Tester

Laser Head Height Sensor – Looking for a Beta Tester

Category: Plasma & Laser

This one says height sensor is Ethercat or +- 10v
alleriastore.com/products/automatic-lase..._fid=c31262f39&_ss=c
Some of their  controller packages refer to a TTA interface but don't describe it anywhere
alleriastore.com/products/automatic-lase..._fid=c31262f39&_ss=c

Having a more open spec rather than closed source will be much better anyway.
  • gene_weber
  • gene_weber's Avatar
01 Mar 2025 21:34
Replied by gene_weber on topic RPi 4B w/LinuxCNC 2.9.3, Mesa 7C81, Isolation Card, PWM Card, Relay Card, More

RPi 4B w/LinuxCNC 2.9.3, Mesa 7C81, Isolation Card, PWM Card, Relay Card, More

Category: User Exchange

As noted the MicroSD card has the OS and LinuxCNC. It has the KiCad files. It also has the data sheets and documents for boards and components used on the boards I made.
 

Here is a screenshot of the system running. The Pi is mounted on the 7C81.
 

Here are screen shots of the directories with the included files mentioned above.
 
 

If you have any questions you can email me directly at This email address is being protected from spambots. You need JavaScript enabled to view it.

Best
  • gene_weber
  • gene_weber's Avatar
01 Mar 2025 21:26 - 07 Mar 2025 14:57
Replied by gene_weber on topic RPi 4B w/LinuxCNC 2.9.3, Mesa 7C81, Isolation Card, PWM Card, Relay Card, More

RPi 4B w/LinuxCNC 2.9.3, Mesa 7C81, Isolation Card, PWM Card, Relay Card, More

Category: User Exchange

I was planning to use this controller setup for a Precision Matthews 728v-t mill using Teknic ClearPath SD servos. I was not keen on interfacing to the servos and mill spindle directly from the FPGA card, so I designed a 3v - 5v level shifting buffer / isolation card. I did the design in KiCad and all KiCad schematic and PCB files are included on the microSD card. Here is the schematic of the card.

 

This browser does not support PDFs. Please download the PDF to view it: Download PDF



Here is how the card was going to be used in this controller setup. The 7C81 had been flashed as a 5ABOBX3D.  There are three cards because the minimum board order was three. I decided to build out all three in case there was an issue with one, and to have spares. The boards have been powered up and tested. They are fully functional.

Obviously given HAL you don't have to use the board exactly as I intended.

 

This browser does not support PDFs. Please download the PDF to view it: Download PDF



Here is the how the controller power was planned.

 

This browser does not support PDFs. Please download the PDF to view it: Download PDF

  • prokopcio
  • prokopcio's Avatar
01 Mar 2025 21:10
Replied by prokopcio on topic Laser Head Height Sensor – Looking for a Beta Tester

Laser Head Height Sensor – Looking for a Beta Tester

Category: Plasma & Laser

Also I noted that on some laser cutting solutions the capacitive BCL-AMP is being superceded by amplifiers with a 0-10 volt signal?

could you give an example / link ?
I was looking some time ago for such sensors but I found only one that did not meet my requirements.
  • gene_weber
  • gene_weber's Avatar
01 Mar 2025 21:08
RPi 4B w/LinuxCNC 2.9.3, Mesa 7C81, Isolation Card, PWM Card, Relay Card, More was created by gene_weber

RPi 4B w/LinuxCNC 2.9.3, Mesa 7C81, Isolation Card, PWM Card, Relay Card, More

Category: User Exchange

For sale as a group. $500 US shipping included.

MESA 7C81 is FPGA motherboard host for a Raspberry Pi
1.5" RPI GPIO cable for 7C80 and 7C81
DIN Tray 107MM X 102MMFor 7C81

Raspberry Pi 4 Model B (8 GB).
Includes SanDisk Ultra 32GB microSD card with RT PREEMPT 6.6 linux kernel version of Raspberry PI OS. See this thread regarding installation.
Pi heatsinks, power cord, fans.

KBSI-240D (9431) Signal Isolator. DIN tray for this card.

2 DPDT Signal Relay Module Board, DC 24V . DIN tray for this card and PWM card.

Ideal Power's 56YSD15S 24v DC 15W DIN Rail Mount power supply

3.3V PWM to 0 to 10 V Voltage Converter . DIN tray for this card and Relay card.

Three signal isolation cards I designed and fabricated. DIN tray for this card. Ribbon cables from 7C81 to signal isolation board. Connectors and pins for the connectors that mate to the signal isolation board.

Cards are described in detail in the next post.

 
 
 
 
 
 
 
 


 
  • prokopcio
  • prokopcio's Avatar
01 Mar 2025 21:03 - 01 Mar 2025 21:06
Replied by prokopcio on topic Laser Head Height Sensor – Looking for a Beta Tester

Laser Head Height Sensor – Looking for a Beta Tester

Category: Plasma & Laser

This is "only" a sensor that transmits the distance value to the CNC System. The CNC System must be able to use it.

If you have any ideas how i can help, I would be grateful for your advice.

At the moment I have accepted that the frequency will be the best solution.

so I implemented freq. scale
0-10mm -->> 20kHz - 70kHz   (10kHz = colision )
( each of steps 0.05kHz = 0.01mm ).
It works exactly as it should.
of course is availabe analog output 0-10V and you can use the analog output or frequency (a square 50% duty signal and any voltage) depended what you need.

first test frequency output on my desk :

  • rodw
  • rodw's Avatar
01 Mar 2025 20:23
Replied by rodw on topic Laser Head Height Sensor – Looking for a Beta Tester

Laser Head Height Sensor – Looking for a Beta Tester

Category: Plasma & Laser

Linuxcnc is not really designed for serial transmission in real time.
Yes, Mesa has its smart serial interface that it uses principally for its own daughter cards but its not well developed for third party devices. It would add additional development complexity. Plus it would limit the hardware platform that could be used with Linuxcnc.

Using frequency or a voltage is well understood and easy to decode and support on different hardware
With the emergence of Ethercat controlled laser cutting heads, its important to consider a wider audience and how it can be incorporated into an Ethercat machine.
Also I noted that on some laser cutting solutions the capacitive BCL-AMP is being superceded by amplifiers with a 0-10 volt signal

I think Proma needs to gives some thought on to how to keep their audience as broad as possible. I think that while using a frequency read by an encoder is quite simple and broadly available, 0-10 volt may open the device up to a broader audience but may not have the advantage of sensing collissions etc via specific frequencies.  Using serial communications reduces the audience to Linuxcnc users using specific hardware. I think frequency sounds the most flexible now.

Finally a question about frequencies. How would you sense a void? eg say you wanted to find the material edge so the axes can be rotated around the Z axis to account for a skewed sheet? Or to sense the edge of a sheet when severing it to turn off the laser?
  • gene_weber
  • gene_weber's Avatar
01 Mar 2025 20:04
Replied by gene_weber on topic Raspberry Pi OS PREEMPT RT 6.13 Kernel Cookbook

Raspberry Pi OS PREEMPT RT 6.13 Kernel Cookbook

Category: Installing LinuxCNC

Yes, RPi suggests that parallel processing 1.5x that number of cores works well. I had also always used the number of cores.
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