Pololu Jrk Motor Controllers with Feedback


With integrated support for analog voltage or tachometer (frequency) feedback, the Jrk family of motor controllers makes it easy to add closed-loop control of speed or position (but not both!) of a single brushed DC motor to a wide range of applications. These versatile, general-purpose modules support a variety of high-level control interfaces: USB for direct connection to a computer, TTL serial (and I²C on the newer G2 versions) for use with a microcontroller, RC hobby servo pulses for use in an RC system, and analog voltages for use with a potentiometer or analog joystick. They also offer many settings that can be configured using our free configuration software utility. This software simplifies initial setup of the device and allows for in-system testing and monitoring of the controller via USB.

The table below lists the members of the Jrk family, including the original (green) versions, and shows the key differences among them.


Jrk
21v3

Jrk
12v12

Jrk G2
21v3

Jrk G2
18v19

Jrk G2
24v13

Jrk G2
18v27

Jrk G2
24v21
Recommended max
operating voltage:
28 V(1) 16 V 28 V(1) 24 V(2) 34 V(3) 24 V(2) 34 V(3)
Max nominal
battery voltage:
24 V 12 V 24 V 18 V 28 V 18 V 28 V
Max continuous current
(no additional cooling):
2.5 A* 12 A 2.6 A 19 A 13 A 27 A 21 A
USB, TTL serial,
Analog, RC control:
Yes Yes Yes Yes Yes Yes Yes
I²C control: Yes Yes Yes Yes Yes
Hardware current limiting: Yes Yes Yes Yes
Dimensions: 1.35″ × 1.35″ 1.85″ × 1.35″ 1.0″ × 1.2″ 1.4″ × 1.2″ 1.7″ × 1.2″
Price: $49.95 $99.95 $49.95 $99.95 $99.95 $149.95 $149.95
1 Transient operation (< 500 ms) up to 40 V.
2 30 V absolute max.
3 40 V absolute max.
* Reduced from “3 A” based on newer, more stringent tests. The value now is directly comparable to the rating for the newer G2 21v3.

Products in category “Pololu Jrk Motor Controllers with Feedback”

Pololu item #: 3149
Brand: Pololu
Status: Active and Preferred 
 Free shipping in USA 
 Free add-on shipping in USA 
Temporarily out of stock. See product page to backorder.
Out of stock.
Quantity:

This powerful motor controller makes closed-loop speed or position (but not both!) control of a brushed DC motor easy, with quick configuration over USB using our free software. It supports five control interfaces: USB, TTL serial, I²C, analog voltage (potentiometer), and hobby radio control (RC). This version offers a wide 6.5 V to 40 V operating range and can deliver continuous output currents up to 21 A without a heat sink. Male headers and terminal blocks are included but not soldered, allowing for custom installations.

Pololu item #: 3148
Brand: Pololu
Status: Active and Preferred 
 Free shipping in USA 
 Free add-on shipping in USA 
Temporarily out of stock. See product page to backorder.
Out of stock.
Quantity:

This powerful motor controller makes closed-loop speed or position (but not both!) control of a brushed DC motor easy, with quick configuration over USB using our free software. It supports five control interfaces: USB, TTL serial, I²C, analog voltage (potentiometer), and hobby radio control (RC). This version offers a wide 6.5 V to 30 V operating range and can deliver continuous output currents up to 27 A without a heat sink. Male headers and terminal blocks are included but not soldered, allowing for custom installations.

Pololu item #: 3147
Brand: Pololu
Status: Active and Preferred 
 Free shipping in USA 
 Free add-on shipping in USA 
Temporarily out of stock. See product page to backorder.
Out of stock.
Quantity:

This powerful motor controller makes closed-loop speed or position (but not both!) control of a brushed DC motor easy, with quick configuration over USB using our free software. It supports five control interfaces: USB, TTL serial, I²C, analog voltage (potentiometer), and hobby radio control (RC). This version offers a wide 6.5 V to 40 V operating range and can deliver continuous output currents up to 13 A without a heat sink. Male headers and terminal blocks are included but not soldered, allowing for custom installations.

Pololu item #: 3146
Brand: Pololu
Status: Active and Preferred 
 Free shipping in USA 
 Free add-on shipping in USA 
Temporarily out of stock. See product page to backorder.
Out of stock.
Quantity:

This powerful motor controller makes closed-loop speed or position (but not both!) control of a brushed DC motor easy, with quick configuration over USB using our free software. It supports five control interfaces: USB, TTL serial, I²C, analog voltage (potentiometer), and hobby radio control (RC). This version offers a wide 6.5 V to 30 V operating range and can deliver continuous output currents up to 19 A without a heat sink. Male headers and terminal blocks are included but not soldered, allowing for custom installations.

Pololu item #: 3142
Brand: Pololu
Status: Active and Preferred 
 Free shipping in USA 
 Free add-on shipping in USA 
Temporarily out of stock. See product page to backorder.
Out of stock.
Quantity:

This compact motor controller makes closed-loop speed or position (but not both!) control of a brushed DC motor easy, with quick configuration over USB using our free software. It supports five control interfaces: USB, TTL serial, I²C, analog voltage (potentiometer), and hobby radio control (RC). This version offers a 4.5 V to 28 V operating range and can deliver continuous output currents up to 2.6 A (5 A peak) without a heat sink. Male headers and terminal blocks are included but not soldered, allowing for custom installations.

Pololu item #: 3143
Brand: Pololu
Status: Active and Preferred 
 Free shipping in USA 
 Free add-on shipping in USA 
Temporarily out of stock. See product page to backorder.
Out of stock.
Quantity:

This compact motor controller makes closed-loop speed or position (but not both!) control of a brushed DC motor easy, with quick configuration over USB using our free software. It supports five control interfaces: USB, TTL serial, I²C, analog voltage (potentiometer), and hobby radio control (RC). This version offers a 4.5 V to 28 V operating range and can deliver continuous output currents up to 2.6 A (5 A peak) without a heat sink. This version ships with soldered header pins and terminal blocks.

Pololu item #: 1393
Brand: Pololu
Status: Not Recommended for New Design 
 Free add-on shipping in USA 
This item could qualify for free shipping Free shipping in USA over $40 
Temporarily out of stock. See product page to backorder.
Out of stock.
Quantity:

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 6–16 V (with transient protection up to 40 V).

Pololu item #: 1392
Brand: Pololu
Status: Not Recommended for New Design 
 Free add-on shipping in USA 
This item could qualify for free shipping Free shipping in USA over $40 
Temporarily out of stock. See product page to backorder.
Out of stock.
Quantity:

The jrk 21v3 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 with feedback for closed-loop speed or position control, or it can be used without feedback as an open-loop speed control. The continuous output current is approximately 3 A in the recommended operating range of 8–28 V, with derated performance down to 5 V and transient protection to 40 V. The version ships with connectors included but not soldered in, allowing for custom installations.

Pololu item #: 1394
Brand: Pololu
Status: Not Recommended for New Design 
 Free add-on shipping in USA 
This item could qualify for free shipping Free shipping in USA over $40 
Temporarily out of stock. See product page to backorder.
Out of stock.
Quantity:

The jrk 21v3 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 with feedback for closed-loop speed or position control, or it can be used without feedback as an open-loop speed control. The continuous output current is approximately 3 A in the recommended operating range of 8–28 V, with derated performance down to 5 V and transient protection to 40 V. This version ships with connectors installed as shown (no soldering required).

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