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Here's the box I'm using.

Thanks for the replies! I'm quite sure I had the polarity correct, I'm thinking it was pulling too much power at 5 volts, should've put it at 7 or 8 I'm thinking. They were cheap Amazon buck converters, so I'm not too worried about them. The step down to USB output is working good. Zeb, thanks...

Any idea why it would fry a power supply when plugging it into the arduino? I set the output of the converter to 5.05VDC and as soon as you touch the plugs together they spark and fry both! Should I have had a higher voltage, was it trying to pull too many watts at this voltage? I have a...

Unfortunately that box was too small for my driver board and even the LCD I got was a bit too wide to fit it. I ended up ordering this one: https://www.amazon.com/dp/B005T58ZTO?ref=ppx_yo2_dt_b_product_details&th=1 . It should arrive today, hopefully it works well. I got the stepper mount...

That's what I have in mind, but without the switch. My problem is modding the code to accept an outside signal instead of a button push. I've been wanting to learn more coding, so maybe this will be my chance, lol.

I'm a CNC engineer, so I'd like to automate this more than it seems I can right now. I want to be able to enter an M code after each cut to trigger a relay/pulse telling the rotary table to index by whatever amount I had set in the indexer control. This is probably a question for kquiggle...

Thanks everyone for this project!!! It's almost exactly what I'm looking for. I'm using it to build one out of a Brown & Sharpe #0, I think, dividing head. It has a 40:1 ratio and I have a 3:1 pulley setup for a 120:1 ratio! Anyhow, I wanted to see if there's a way to add an input so that I...