I'm hoping someone can offer me some advice, I'm in the middle of building a parallel port cnc router, I'm running two ports.

I'm not sure if it's possible or not but I was searching through YouTube and came across a video that really intereted me.


The person added some warning light's and a pause and start button but unfortunately there is no real information one the video, and was wondering if someone else has done this or able to point me in the right direction and I'm struggling to find anything.


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