AstroHub
12V Input, Arduino Nano control, place for A4988/DRV8825 stepper driver, 2xLM2596 DC-DC (1 should be 5V, second is your choice), 4x12V OUT, 4x12V PWM OUT (DPAK transistor), place for polymer fuse for OUTs.
For more info you can send an email to jakub.bartas(at)gmail.com
EDIT: error in Arduino Nano library and badly placed. Arduino has USB inside, instead of outside the board.
