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I installed LinuxCNC onto a RPi 400 with a touchscreen and GMOCCAPY. It works very well, but something has changed on the system and it is now unstable. LinuxCNC, is locking up after periods of inactivity. Running a Mesa 7i96 board. Wonder if doing another clean install will fix it. Might have had a bad update along the way. Will let you know what I discover....

I made:
and files was in:

Copy that just was curious!

Glad to hear you’re getting better results

zz912 wrote:

It looks good BUT the file
~/linuxcnc/configs/sim/gmoccapy/macros/change_g43.ngc
is created after load sim configuration. For example in my computer this file dont exist.

In my RIP installation file is here:
/home/zdenek/linuxcnc/linuxcnc-master/configs/sim/gmoccapy/macros/change_g43.ngc

This scripts must work also in debian instalation.

It is defined here:
github.com/LinuxCNC/linuxcnc/blob/1c72d4...ipts/linuxcnc.in#L53
But I dont know, how to use it.

 

Did you build a package from master and installed it?
I am pretty sure that the change_g43.ngc file should be next to the change.ngc file in the directory because all files from this folder are copied so this one should be copied as well.

"~/linuxcnc/configs/sim.gmoccapy/macros" (or similar)

Having studied the information a bit, I think you are using something like this. This is an interesting method, but it has a number of its own shortcomings. In addition to 7745, there are many more successful chips (for example, ZSSC3123AA2R, MAS6513, PCAP04, or the simplest   cav424 with an external ADC).

I will reveal the details that I found out on my own and were hard to find on the Internet:As for AD7745/AD7746, I tried to use it as a controller for gas burners. It was not easy because it worked on the desk, but during cutting, the gas changed the parameters very much and the AD7745/AD7746 measurement method was not suitable.1. It is not suitable for lasers because the reading is too slow 90Hz.To make sense for Lasers, the absolute minimum sampling is 500Hz (2ms), I have 3650Hz sampling but I do not want/cannot reveal why this value is chosen and it should be selected for a specific type of processing.2. AD7745/AD7746 have a measurement range of 17pF (60pF tollerant), which is definitely too little because the parasitic capacitances on the wire, head, etc. are 50-200pF3. The useful measurement range of the distance is 0.1pF - 30pF, although for some types of nozzles the range may be wider4. I chose the method of measuring the capacitance charging time, although I also experimented with measuring the frequency as in BCL-AMP BCS, which was a bit less stable but also very good.5. Unfortunately, I did not find any ready-made circuit like AD7745/AD7746 that would be suitable, and I had to design everything from scratch. 

Hi everyone,I've started developing an I/O board using the Raspberry Pi Pico. The prototype will feature 8x 24V outputs and 16x 24V inputs, communicating over Ethernet UDP with a real-time HAL driver. If everything works well, I plan to develop additional boards with step generation, analog outputs, and encoder inputs.At the moment, things are still evolving—I'm currently having the first batch of 5 PCBs manufactured and have already ordered the necessary components. Communication between the Pico and the real-time HAL is already working. :)I'll keep you updated as the project progresses!