Advanced Search

Height Per Volt?
Leave at default 0.1 or whatever the default is, i never had to change that.
VAD at 65% or 70% should be fine, 90% is to much
THC delay i usually have at 0.1-0.2, only for slow cutting speeds use more if needed
And disable "use auto volts" until you get the machine working properly.
From your pictures, i would venture a guess at Z axis acceleration being way to low, or scaling being way off from reality.
If all of the above is set and verified to be OK, then set the P value to 8 or 7 or even lower, but if you end up any lower than 5, something is terribly wrong.

They require a lot of rework to get inputs. Swapping out chips, add jumpers, messing with power supply voltages, can be done but fiddly.

Best starting with one of the more common boards discussed on this thread.

Just keep this is mind that it may end up costing close to the cost of original Mesa board (less postage if you are outside the locality of a local supplier). Most of these projects turn out that way.

BTW Linuxcnc-RIO is a great project, well supported and actively developed.

Could you plot the encoder position and velocity to see if the error is from the encoder side or LinuxCNC?

The jagginess may be from encoder wheel inaccuracies and inherent velocity quantization
errors from the 1 ms time stamp of the software encoder (this would be improved by using the hardware encoder)

 

The coloring of the movements works very well, that's what I wanted, thanks for another good job.

In my simulation, the "myhud" panel would be more to my liking in the upper right corner. How can I set this up?

The planner at work.



tapping.

Ok this thread was primarily for the development of a Linuxcnc spi driver for the RPi5.
This as been done, but you will need to build either 2.9 or master from source.
There is a more recent thread discussing this.
Apart from the new driver everything that applies to RPi 4 and either the 7c81 or 7c80 is relevant.
There is a quite large thread on the 7c81 that you may want to read, the 7c80 manual should have information on using mesa flash.
Setup and mesa flash was not the point of this thread . Now that a driver has been developed this thread is pretty much moot.

Just got an RT enabled kernel loaded on my fresh pi5, any docs you could point me to for the spi stuff (unless it's just running current kernel) and the mesaflash option? I will be connecting to a 7c80, but am doing all the prep work outside of the enclosure (mainly so I can clone the SD card once its base config is done.

I recommend an old iMac.

I used a 2008 for my last CNC plasma, load it up with linux and bam! Money!!

My new CNC plasma is almost finished and I have just picked up a 2017 iMac for $300. I'm using it now just before I wipe it and load Linux.

In my early days with RIO I bought one of the Colorlight 5A-75E. They work, but I believe they don't have any inputs and the ethernet port is not supported. I never followed up with it and switched to the Tang Nano 9k.