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Thanks for the input. Yes, this is, as of this moment anyway, going to be just a simple common AC powered hand router. Fairly low power and spec'd at only 2.4 amps. I might in the future look to...

Powered everything up and it all appears to work fine. M3/M5 cycled the relay which powered on the spindle/Router without any issues. So all of my electronics are now verified. Now off to start...

Yeah, after sleeping on it I decided it was best to not try and take any shortcuts. I don't think these relay boards pull enough power to matter either way. but the last thing I want is a 'hiccup' in...

Greetings All,

I am building out a new CNC router that utilizes the STB4100 USB Motion Control board with Mach3.
I now have all 4 steppers wired, working and verified as well as the Estop, Home,...

[QUOTE=dazp1976;2461162]This any good to you:
https://www.buildyourcnc.com/Documents/USB%20Motion%20Card%20STB4100%20Manual.pdf


Thanks dazp1976. That document is actually one of the ones I had...

In case anyone else stumbles upon this thread with a similar question I wanted to keep it updated with whatever findings I come across. I finally found a Russian YT video that shows these parts...

Thanks for the response. I was attempting to keep it generic since my questions may come off sounding stupid or make it look like I just want people to just fix my setup without me doing my own...

TLDR: Without doing the proper research I bought an Amazon 'CNC Kit' and I am now trying to verify basic electrical integrity. The included docs don't match the components so I am hoping for some...