Some pictures of the motor control unit.

It's an older two-button 500w brushless Consew. They are affordable and were popular retrofits for small machine tools a few years ago. Mine has been reliable so far.

The variable speed foot pedal works great in combination with the built in top speed settings on the menu. It allows ramping up or down as well as running at approximate intermediate speeds the same way as on a sewing machine.

The pushbutton menu used to set top speed and direction is easy to operate but slow for reversing for things like running out taps. With the Arduino Uno copy controlling relays wired to the menu buttons I was able to speed things up a lot.


Front and rear views

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Both pedals, and hall effect speed control sensor inside sewing machine pedal

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New parts inside controller box and closeup of how relay board is wired to back of menu buttons

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