This board is designed to drive two regular (brushed) DC motors or one (unipolar or bipolar) stepper motor. It is of course also possible to driver other loads; we (ab)used one of these drivers while playing with a TEC (peltier element).
To accomplish this, the board is equipped with 4 half-bridge drivers, each capable of switching 24V at 5A (15A for the beefier version).
Datasheets:
Documentation for the complete PCB
FETs on the 5A version
FETs on the 15A version
Tags: dc motor, Motordriver, motor, driver, unipolar, bipolar, stepper, stepper motor, tec, peltier, half-bridge, FET, FETS, brushed