Pololu Jrk 3A 8-28V USB Motor Controller with Feedback (with headers)

• 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