translation missing: en.general.accessibility.skip_to_content

Jrk 12v12 USB Motor Controller with Feedback

by Pololu
SKU 2123
£164.78 inc VAT
£137.32 ex VAT
2 in stock.

The powerful jrk 12v12 motor controller with feedback is a highly configurable brushed DC motor controller that supports four interface modes: USB, logic-level serial, analog voltage, and hobby radio control (RC). The controller can be used as an open-loop speed control or for closed-loop speed or position control.

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 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



  • 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



  • Size: 1.35" x 1.85"
  • Weight: 0.5 oz
  • Motor driver: VNH2SP30
  • Motor channels: 1
  • Control interface: USB; non-inverted TTL serial; RC servo pulses; analog voltage (Autodetects baud rates between 300 and 115,200 bps, or can be set to any fixed baud rate in this range)
  • Minimum operating voltage: 6 V
  • Maximum operating voltage: 16 V
  • Continuous output current per channel: 12 A
  • Peak output current per channel: 30 A
  • Current sense: 0.13 V/A (Current readings are converted to a digital number from 0-255)
  • Maximum PWM frequency: 20 kHz
  • Minimum logic voltage: 4 V (In RC mode, the pulses can be as low as 2V)
  • Maximum logic voltage: 5 V
  • Reverse voltage protection


Pololu Jrk USB Motor Controller User's Guide

Pololu USB Software Development Kit

Application Note: Using AutoHotkey with Pololu USB Products

Jrk Motor Controller Windows Drivers and Software

Dimension diagram of the Pololu Jrk 12v12 USB Motor Controller with Feedback

Pololu Jrk 12v12 USB Motor Controller with Feedback drill guide

Recommended Links

The Haunted Organist A spooky animatronic skeleton using the Jrk USB Motor Controller

R2D2 dome position control A replica of the famous Star Wars droid R2D2 that uses the Jrk USB Motor Controller for position control

Microsoft .NET Framework 3.5 The Microsoft .NET Framework version 3.5 is required for many Pololu configuration, control, and utility programs under Windows