[maxspongebob]

I'm still waiting on some IC's to arrive. The USB interface chips are coming from China and COVID has everything backed up in customs.

Post a schematic, I am interested to see what you have. I usually use optoisolators when doing that type of interface where a level shift is occurring also. Differential/Receivers have a good bit of isolation as well and are very immune to noise.

[ericks]

I'm still waiting on some IC's to arrive. The USB interface chips are coming from China and COVID has everything backed up in customs.

Post a schematic, I am interested to see what you have. I usually use optoisolators when doing that type of interface where a level shift is occurring also. Differential/Receivers have a good bit of isolation as well and are very immune to noise.

Not good...hopefully you will get them soon. I am using my old LPT port pc and Mach3 for testing. The bus transceiver i used for level shifting seem to work well, still deciding whether to add high speed opto couplers for step/dir signals too.
No issues with motion through Mach3....Sorry i don't have a schematic to post