The control board includes four TMC2209 stepper motor drivers (under the custom heatsink – which needs a fan is any driver is delivering more than 0.8A), and will run from 24V or 12V. The RP2040 gives ...

With an STM32 microcontroller, TMC2209 stepper drivers, a Raspberry Pi Compute Module 4, and plenty of room for expansion, it promises to be a drop-in upgrade for essentially any 3D printer ...