Hi, i have putting together a cnc shield and was planning to have some sort of isolation between the Step/Dir signals and the arduino. I am a little out of my depth here but here goes. I think i need some sort of digital optoisolation as i need to be careful of jitter due to software which means …

Arduino to external drive isolation

TomGeorge September 25, 2017, 1:25pm 8

Hi,
If you download (try google) the manual you will find that the inputs are already opto-isolated.

Tom....
Manual attached.

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