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Pololu Driver Jrk 12v12 USB Feedback

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The powerful Jrk 12v12 motor controller 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 continuous output current is approximately 12 A (30 A max) and the operating range of 6 V to 16 V (with transient protection up to 40 V).


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Overview

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. A USB A to mini-B cable (not included) is required to connect this controller to a computer.

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 V to 5 V analog voltage interface for direct connection to potentiometers and analog joysticks.

• Two closed-loop feedback options:

○ 0 V to 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 for Windows.

• 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.


Specifications

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


Dimensions

Size: 1.35" x 1.85"
Weight: 0.5 oz


General specifications

Motor driver: VNH2SP30
Motor channels: 1
Control interface: USB; non-inverted TTL serial;
RC servo pulses; analog voltage1
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/A2
Maximum PWM frequency: 20 kHz
Minimum logic voltage: 4 V3
Maximum logic voltage: 5 V
Reverse voltage protection?: Y
Version: original 12v12 (16 V max, 12 A max continuous)


Notes:

1 Autodetects baud rates between 300 and 115,200 bps, or can be set to any fixed baud rate in this range.
2 Current readings are converted to a digital number from 0-255.
3 In RC mode, the pulses can be as low as 2V.


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Pololu Driver Jrk 12v12 USB Feedback

Pololu Driver Jrk 12v12 USB Feedback

The powerful Jrk 12v12 motor controller 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 continuous output current is approximately 12 A (30 A max) and the operating range of 6 V to 16 V (with transient protection up to 40 V).


See description for more details about the product.

Add to cart now!

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