JRK 21v3 - single-channel USB driver with 28V / 3A feedback - Pololu 1392

Extremely easy to operate driver engine with feedback. Available communication interfaces: USB, TTL, analog and radio. Supply voltage from 5 V to 28 V. the continuous Current up to 3 A.

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Price 119,40 zł

Reduced price!


199,00 zł

Product description: Pololu JRK 21v3 - single-channel driver of USB drives

Extremely easy to operate driver engine with feedback. Available communication interfaces: USB, TTL, analog and radio. Supply voltage from 5 V to 28 Volts. Continuous current up to 3 A.


The kit requires a quick soldering basic electronic elements.


Characteristics of driver motors Pololu JRK 21v3

  • USB interface (to emulate a serial port (COM) to control the engine directly from the computer
  • Software compatible with Windows 7, 8 , Vista, XP
  • Możliowość setup:
    • Coefficients of PID control
    • The maximum PWM cycle signal
    • Maximum acceleration
    • The weight of throttling errors

Pololu JRK 21v3

  • The PWM signal with high frequency, does not create noise and squeaks
  • The power sensor, the ability to limit the current
  • Four communication protocols:
    • USB direct connect to computer
    • TTL (Full-duplex) - serial interface for connection with the microcontroller
    • The radio signal (RC)
    • Analog input (0 - 5V) - connect potentiometer or joystick
    • Parameter CRC - protection from communication errors

 Pololu JRK 21v3

  • A detailed manual (in English)
  • The ability to update the software (firmware).


Insights driver engines



The layout is designed for self-Assembly, require a simple main components. On customer request we can supply the module with przylutowanymi connectors and capacitors. For this purpose, please leave the details in comments to the order.


Sizes driver Pololu JRK 21v3

Technical characteristics of driver motors Pololu JRK 21v3

  • Motor driver: MC33926
  • Voltage motor power supply: 5V - 28V
  • Continuous current per channel: 3 A
  • The maximum current, the instantaneous per channel: 5A
  • The maximum frequency of PWM: 20 kHz
  • Voltage digital logic supply: 4V to 5V
  • Number of channels: 1
  • The sensitivity of the sensor current 0.5 A/V
    • the reading is converted to 8-bit number (range 0-255)
  • Interfaces: USB, TTL serial, RC servo, analog voltage
    • Auto-detect baud rates of 300 - 115,200 bps
    • Mode RC pulse amplitude can be of order 2V
  • Protection against reverse power connection
  • Dimensions (without connectors): 34,2 x 34,2 x 10 mm
  • Weight (without connectors): 6.5 g


At the request of the client we can deliver the work Concentric LACT10P-12V-20 Linear Actuator.


  • Voltage to 5.0 V
  • Voltage from 28.0 V
  • Current 4 A
  • Channels 1


Posting the payment for the order on our account on a business day up to 13:00 means sending the goods on the same day!


The time of payment depends on the hours of ELIXIR session of the sender's bank and the recipient of the transfer (more information on this subject, for example on the website


The table presents available forms of delivery in Poland


Carrier and

Bank wire

by cash


Poczta Polska

terms of service

9,90 PLN17,90 PLN1-3 days

Kurier GLS

terms of service

14,90 PLN22,90 PLN

1-2 days

Paczkomaty 24/7 

terms of service

12,90 PLN-1-3 days

If the amount to pay for products exceeds 500 PLN
Delivery is for free!


  • Free delivery of orders over 500 PLN does not apply to parcels addressed outside of Poland.
  • Free delivery does not apply when changing orders.
  • The delivery period is counted in working days from the date of dispatch of the order.