I'm doing some tinkering & want to run several Neema17 standard Stepper Motors in parallel from the same power feed source.
I'm guessing I need a board I can apply some volts to, that takes it's sensing from the original Mother-Board Motor-Outputs & has some sort of parallel output.

I managed successfully to parallel 2 motors from a standard stepper driver/mother board with plenty of cooling to the tiny heat sink, but it does get quite warm even so.....(not killed it yet)...