Product Description
Overview
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.
The Jrk G2 21v3 operates from 4.5 V to 28 V and can deliver a continuous output current of 2.6 A (5 A peak) without a heat sink. The controller supports transient operation (< 500 ms) up to 40 V, and the maximum recommended nominal battery voltage is 24 V. This version is sold with connectors soldered, so no soldering is necessary to use it.
A version is also available with header pins and terminal blocks included but not soldered, which allows for custom installations.(PO3142)
Main features of the Jrk G2 family
- Easy open-loop or closed-loop control of one brushed DC motor
- A variety of control interfaces:
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USB for direct connection to a computer
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TTL serial operating at 5 V for use with a microcontroller
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I²C for use with a microcontroller
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RC hobby servo pulses for use in an RC system
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Analog voltage for use with a potentiometer or analog joystick
- Feedback options:
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Analog voltage (0 V to 5 V), for making a closed-loop servo system
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Frequency, for closed-loop speed control using pulse counting (for higher-frequency feedback) or pulse timing (for lower-frequency feedback)
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None, for open-loop speed control
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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
- Arduino library makes it easy to get started using these controllers with an Arduino or compatible board
- Comprehensive user’s guide
Dimensions
- Size:1.2? × 1.0? × 0.47?
- Weight:7.5 g
General specifications
- Motor channels:1
- Control interface:
- USB; non-inverted TTL serial; I²C;
- RC servo pulses; analog voltage
- Minimum operating voltage:4.5 V1
- Maximum operating voltage:28 V2
- Continuous output current per channel:2.6 A3
- Maximum PWM frequency:20 kHz
- Reverse voltage protection?:Y
- Version:G2 21v3 (28 V max, 2.6 A max continuous)
- Connectors soldered?:Y
Identifying markings
- PCB dev codes:umc06a
- Other PCB markings:0J11316
Notes:
- 1.Powering the Jrk G2 21v3 with a supply voltage between 4.5 V and 5.5 V might cause its logic voltage to be lower than normal, which could affect operation. See the user’s guide for more information.
- 2.Transient operation (< 500 ms) up to 40 V.
- 3.Typical results at room temperature running at 90% duty cycle with VIN > 8 V. Operation from 4.5 V to 8 V reduces maximum current output.
