12001r2

12001r2 is the second revision of the 12001 family of compact stepper motor drivers produced by NovaTech Systems. Designed for use in small to mid-size CNC machines, 3D printers, and robotics, the unit integrates a microstepping controller and a current-regulated driver in a 40x40 mm package. The device accepts supply voltages from 8 to 36 V and provides adjustable current up to 2 A per coil. It supports microstepping up to 1/128 step resolution, enabling smooth motion at low heat. Communication is via standard step/dir inputs, with optional microcontroller interfaces via SPI for advanced users. The enclosure includes overcurrent protection, thermal shutdown, and fault indicators. The unit is designed to be wired directly to bipolar stepper motors and is compatible with common firmware such as GRBL and Marlin, making it popular among hobbyists and small manufacturers.

The 12001r2 was released in 2020 as an updated revision addressing overheating concerns reported in the initial 12001r1 and adding improved thermal management and a revised pinout. It remains backward compatible with the 12001r1, though users are advised to review the pin mapping. Typical applications include belt-driven CNC routers, pick-and-place machines, and educational robotics kits. See also 12001r1 and the broader 12001 driver family.