Originally Posted by
OurWorkbench
Could you explain "capacitor-based pedal"? I have heard of carbon pile, resistor and electronic, but not capacitor-based.
Janey - Neat people never make the exciting discoveries I do.
That is absolutely my typo and translation mistake.
Meant resistor-based. Sorry.
Basically, I just put a variable resistor into the pedal.
The board I used is a pre-made one with TDA1085, a common solution for lathes and other similar motor-based equipment, that allows sustaining the RPM with variable loads (in the case with the chainstitch embroidery machine: variable thickness, turns, fabric drag, etc.).