The DCB-261 is a microstepping, bi-polar chopper driver with an intelligent controller for operating small stepping motors. While it is designed for low-cost OEM applications, it is described as offering many enhanced operating features.

The unit uses a bi-polar chopper drive circuit with a 20 kHz chopping rate. The voltage range is from 24 to 40 Vdc and the output current is up to 1.2 amps per phase. On-board intelligent control, with over 30 sophisticated motion commands, is intended to provide high-performance step and direction output signals to the driver to produce step rates in excess of 20,000 steps per second at various microstep resolutions.

Up to 32 axes can be controlled from a single COM port. Other features include 2 KB of non-volatile memory for user programmable storage, limit, home, go, and stop inputs; adjustable run/hold currents; programmable accel/decel ramping; heat-sink mounting; and free development software. The list price is $229 or $279 with motor.