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zł474.21 tax excl.
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).
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Overview
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.
With integrated support for analog voltage or tachometer (frequency) feedback, the second-generation G2 family of Jrk 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 variety of projects. These versatile, general-purpose modules support five different control interfaces: USB for direct connection to a computer, TTL serial and I²C 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 for Windows, Linux, and macOS. This software simplifies initial setup of the device and allows for in-system testing and monitoring of the controller via USB (a micro-B USB cable is required to connect the Jrk G2 to a computer).
The table below lists the members of the Jrk family, including the original 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: |
|||||||
I²C control: | |||||||
Hardware current limiting: | |||||||
Dimensions: | 1.35″ × 1.35″ | 1.85″ × 1.35″ | 1.0″ × 1.2″ | 1.4″ × 1.2″ | 1.7″ × 1.2″ | ||
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. |
Main features of the Jrk G2 family
- Easy open-loop or closed-loop control of one brushed DC motor
- A variety of control interfaces:
- USB for direct connection to a computer
- TTL serial operating at 5 V for use with a microcontroller
- I²C for use with a microcontroller
- RC hobby servo pulses for use in an RC system
- Analog voltage for use with a potentiometer or analog joystick
- Feedback options:
- Analog voltage (0 V to 5 V), for making a closed-loop servo system
- Frequency, for closed-loop speed control using pulse counting (for higher-frequency feedback) or pulse timing (for lower-frequency feedback)
- None, for open-loop speed control
- Note: the Jrk does not support using quadrature encoders for position control
- Ultrasonic 20 kHz PWM for quieter operation (can be configured to use 5 kHz instead)
- Simple configuration and calibration over USB with free configuration software utility (for Windows, Linux, and macOS)
- Configurable parameters include:
- PID period and PID coefficients (feedback tuning parameters)
- Maximum current
- Maximum duty cycle
- Maximum acceleration and deceleration
- 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
Details for item #3146
The Jrk G2 18v19 operates from 6.5 V to 30 V and can deliver a continuous output current of 19 A without a heat sink. Note that 30 V is the absolute maximum for this controller; the maximum recommended operating voltage is 24 V, and the maximum recommended nominal battery voltage is 18 V. For applications using higher voltages (such as 24 V batteries), we recommend the higher-voltage Jrk G2 24v13 or Jrk G2 24v21.
If you need to identify which version you have, you can just plug it into a computer through USB and the Jrk software will tell you. For quick visual identification without a computer, you can distinguish this version from the identically sized Jrk G2 24v13 by the number 150 on top of the tall silver electrolytic capacitors.
Included hardware
Pieces from the 0.1″ header strip can be soldered into the small holes on the logic connection side of the board to enable use with solderless breadboards, perfboards, or 0.1″ connectors, or you can solder wires directly to these holes for the most compact installation.The Jrk ships with a 0.1″ breakaway male header strip and two 2-pin 5mm terminal blocks. You can solder the terminal blocks to the four large through-holes to make your motor and motor power connections (see our short video on terminal block installation), or you can solder an 8-pin piece of the 0.1″ header strip into the smaller through-holes that border these larger holes. Note, however, that the terminal blocks are only rated for 16 A, and each header pin pair is only rated for a combined 6 A, so for higher-power applications, thick wires should be soldered directly to the board.
Note: A USB A to micro-B cable (not included) is required to connect the Jrk G2 to a computer for initial configuration.
Comparison to the original Jrk motor controllers
The Jrk G2 family features a number of improvements compared to our original two Jrk motor controllers (21v3 and 12v12). Most importantly, the Jrk G2 controllers support both higher operating voltages and larger output currents while being even more compact than their predecessors. Other new features include:
- Configurable hardware current limiting on higher-power versions – the motor drivers on the Jrk G2 18v19, 18v27, 24v13, and 24v21 use current chopping to actively limit the motor current when it exceeds a software-configurable threshold (the Jrk G2 21v3 has fixed hardware current limiting and optional software current limiting)
- More accurate speed control at low tachometer frequencies
- I²C interface provides an additional control option
- VIN measurement capability allows monitoring of battery or power supply
- USB Micro-B connector (instead of Mini-B as on the original Jrk controllers)
- Configurable deceleration limiting (the original Jrks just supported configurable acceleration limiting)
- PID coefficients can now be adjusted on the fly over the serial, I²C, and USB interfaces
The Jrk G2 controllers are not drop-in replacements for the original Jrk controllers because of differences in their form factors and pin arrangements, although wiring changes should be straightforward. The Jrk G2 serial protocol is compatible with (and generally a superset of) the original Jrk serial protocol, so in many cases, serial interface software running on a microcontroller or computer will not need to be modified to work with a Jrk G2.
General specifications
Motor channels: | 1 |
---|---|
Control interface: | USB; non-inverted TTL serial; I²C; RC servo pulses; analog voltage |
Minimum operating voltage: | 6.5 V |
Maximum operating voltage: | 30 V2 |
Continuous output current per channel: | 19 A3 |
Maximum PWM frequency: | 20 kHz |
Reverse voltage protection?: | Y |
Version: | G2 18v19 (30 V max, 19 A max continuous) |
Connectors soldered?: | N |
Dimensions
Size: | 1.2″ × 1.4″ × 0.42″1 |
---|---|
Weight: | 6.5 g1 |
Notes
- 1 Without included hardware.
- 2 Absolute maximum; higher voltages can permanently destroy the motor driver. Recommended maximum is approximately 24 V, which leaves a safety margin for ripple voltage on the supply line. Not recommended for use with 24V batteries.
- 3 Typical results at room temperature running at 90% duty cycle.
Data sheet
- Output current
- 19 A
- Number of channels
- 1
- Supply voltage min
- 6,5 V
- Supply voltages max
- 24 V
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