Jrk 12v12 USB Motor Controller with Feedback

Jrk 12v12 USB Motor Controller with Feedback
Brand: Pololu
Product Code: G535F1AF3BAEBA
Reward Points: 0
Availability: 5
Price: $99.95
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The jrk 12v12 is a versatile, general-purpose motor controller that supports a variety of interfaces, including USB. The 6 V to 16 V operating range and high continuous output current of 12 A (30 A peak) allow this board to control many medium-sized DC brushed motors. Analog voltage and tachometer (frequency) feedback options allow quick implementation of closed-loop servo systems, and a free configuration utility (for Windows) allows easy calibration and configuration through the USB port.

Key improvements over competing products and earlier Pololu motor controllers with feedback include:

  • USB connectivity with emulated serial (COM) port allows direct motor control from a PC.
  • Ultrasonic PWM to eliminate switching-induced motor shaft hum or whine.
  • Robust, high-speed communication protocol with user-configurable error condition response.
  • 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.

Main Features of the Jrk 12v12

  • Simple bidirectional control of one DC brush motor.
  • 6 V to 16 V operating supply range.
  • 12 A maximum continuous current output (30 A peak).
  • Four communication or control options:
    • USB interface for direct connection to a PC.
    • Full-duplex, TTL-level asynchronous serial interface for direct connection to microcontrollers or other embedded controllers.
    • Hobby radio control (RC) pulse width interface for direct connection to an RC receiver or RC servo controller.
    • 0–5 V analog voltage interface for direct connection to potentiometers and analog joysticks.
  • Two closed-loop feedback options:
    • 0–5 V analog voltage.
    • Frequency/tachometer digital input up to 2 MHz with 1 ms PID period.
    • (Open-loop control with no feedback also available.)
  • Simple configuration and calibration over USB with free configuration program (Windows 8, Windows 7, Vista, and Windows XP compatible).
  • Configurable parameters include:
    • PID period and PID constants (feedback tuning parameters).
    • Maximum current.
    • Maximum duty cycle.
    • Maximum acceleration.
    • Error response.
    • Input calibration (learning) for analog and RC control.
  • Optional CRC error detection eliminates communication errors caused by noise or software faults.
  • Reversed power protection.
  • Field-upgradeable firmware.
  • Optional feedback potentiometer disconnect detection.
  • Comprehensive user’s guide.


Motor channels: 1
Operating voltage: 6 – 16 V
Continuous output current: 12 A
Peak output current: 30 A
Auto-detect baud rate range: 300 – 115,200 bps
Available fixed baud rates: 300 – 115,200 bps
Available PWM frequencies: 20 kHz, 5 kHz
Reverse voltage protection?: Yes
USB connector style: USB Mini-B

The jrk 12v12 is the larger of two jrk motor controllers. For a lower-power version that has a wider operating voltage range, see the jrk 21v3.

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