On 1/26/23 20:01, John Dammeyer wrote:
So at the moment this is where I sit with the Pi4B (1GB) on the lab bench.
http://www.autoartisans.com/mill/Pi4-LinuxCNC-hardware.jpg
The Chinese BoB is at the top left. The other two BoBs are ones I had kicking
around. The board in the yellow box takes TTL step/dir/enable and Fault and
converts it into the correct format DB-25 for Bergerda AC Servo drives with
differential signals rather than TTL. There's also a little expansion board
that takes PWM and changes it to 0-10V.
The little blue dongle is the CANUSB that talks to a module which controls Mist
Motor Speed and signals to load or unload the draw bar.
And it does run LinuxCNC AXIS 2.8.2
http://www.autoartisans.com/mill/LinuxCNC-2.8-Pi4B-1GB.png
I should probably buy another high speed 16GB or 32GB MicroSD in prep for
creating a 2.9 system that runs Path Pilot.
Within the os size limits, the bigger the u-sd, the longer it lives. I
have had zero failures with 64G cards. Numerous with 8, and a few with 16.
Actually should probably pick up a tiny milling machine and do a conversion on
it with this hardware in mind.
John
Excellent idea, but make it a big enough machine to be useful.
Take care and stay well, John.
Cheers, Gene Heskett.
--
"There are four boxes to be used in defense of liberty:
soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author, 1940)
If we desire respect for the law, we must first make the law respectable.
- Louis D. Brandeis
Genes Web page <http://geneslinuxbox.net:6309/>
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