The Tic 36v4 USB Multi-Interface High-Power Stepper Motor Controller makes basic control of a stepper motor easy, with quick configuration over USB using our free software. The controller supports six control interfaces: USB, TTL serial, I²C, analog voltage (potentiometer), quadrature encoder, and hobby radio control (RC). This version incorporates a discrete MOSFET stepper motor driver, and it ships with soldered header pins and terminal blocks. It can operate from 8 V to 50 V and can deliver up to approximately 4 A per phase without a heat sink or forced air flow (or 6 A max with sufficient additional cooling).