Simple bidirectional control of one DC brush motor Operating supply range: 5V to 28V 3A maximum continuous current output (5 A peak) High-speed communication protocol The Pololu Jrk 21v3 USB motor controller is a versatile, motor controller that supports interfaces, including USB. The continuous output current is approximately 3A in the recommended operating range of 8-28 V, with derated performance down to 5V and transient protection to 40V. Analog voltage and tachometer (frequency) feedback options allow quick implementation of closed-loop servo systems, and a free configuration utility. Key improvements over competing products: USB connectivity with emulated serial (COM) port Ultrasonic PWM to eliminate switching-induced motor shaft hum or whine High internal resolution (12 bits) for smooth and flexible calibration to various input and feedback devices Current sensing and limiting Reversed power protection Field-upgradeable firmware
