This controller has been replaced by the RoboClaw 2x5A (V5).
Overview
The RoboClaw from Ion Motion Control (formerly Orion Robotics) is an efficient, versatile, dual-channel synchronous regenerative motor controller. It can supply two brushed DC motors with 5 A, 15 A, 30 A, or 60 A continuous (depending on the model) at voltages from 6 V to 34 V, and it allows for peak currents up to twice the maximum continuous rating.
The RoboClaw features dual quadrature decoding capability. A built-in PID routine can be used for closed-loop speed control, maintaining motor speeds even if the load varies, or the encoder counts and speeds can be read directly from the RoboClaw for use with an external control system. Analog feedback is also supported for closed-loop position control.
Several interface modes are supported by the RoboClaw: it can be controlled via TTL serial for use with an embedded system or a PC with a serial adapter, RC hobby servo pulses for use as an RC-controlled electronic speed control (ESC), or analog voltages for use with potentiometers or analog joysticks. The RoboClaw 2x15A, 2x30A, and 2x60A additionally support direct computer connections with a USB serial interface (virtual COM port).
Key Features
- Simple bidirectional control of two brushed DC motors
- 6 V to 34 V operating supply range
- 5 A to 60 A maximum continuous current output, depending on controller model
- Automatic current limiting reduces duty cycle when motor current is between 1× and 2× the controller’s rated current
- Three communication or control options:
- Logic-level (TTL) serial interface for direct connection to microcontrollers or other embedded controllers, or connection to a PC with a serial port (external RS-232 level converter required) or USB-to-serial adapter
- Hobby radio control (RC) pulse width interface for direct connection to an RC receiver or RC servo controller
- 0 V to 2 V (5 V tolerant) analog voltage interface for direct connection to potentiometers and analog joysticks
- Dual feedback inputs for PID closed-loop control:
- Speed control with quadrature encoders, up to 19.6 million encoder pulses per second
- Position control with analog encoders or potentiometers
- (Open-loop control with no feedback also available)
- Screw terminals for quick connect/disconnect
- Configurable via pushbutton interface
- Regenerative braking
- Tolerates high-speed direction changes
- Jumper-selectable 5 V BEC
- Battery monitoring and under-voltage cutoff protects batteries from over-discharging
RoboClaw Comparison Table (V4 units)
 2x5A (V4) |
 2x15A (V4) |
 2x30A (V4) |
 2x60A (V4) |
|
|---|---|---|---|---|
| Motor channels: | 2 | |||
| Operating voltage: | 6 V to 34 V | |||
| Continuous output current: | 5 A | 15 A | 30 A | 60 A |
| Peak output current: | 10 A | 30 A | 60 A | 120 A |
| 5V BEC(1) max current: | 150 mA | 3 A | ||
| USB interface: |  |
|
|
|
| Width: | 1.7″ (4.2 cm) | 2.1″ (5.2 cm) | 3.4″ (8.6 cm) | |
| Length: | 1.9″ (4.8 cm) | 2.9″ (7.4 cm) | 3.9″ (10 cm) | |
| Weight: | 17 g | 59 g | 63 g | 205 g |
1 Battery Eliminator Circuit
Sample Code
Ion Motion Control has written an Arduino library for the RoboClaw that makes it easy to interface these motor controllers with an Arduino. The library comes with several example sketches that demonstrate different methods of controlling the RoboClaw.
Note: Ion Motion Control was formerly Orion Robotics, which was previously Basic Micro. Ion Motion Control uses the following product names and number for the RoboClaw controllers:
“RoboClaw 2×5A Motor Controller”, Item Id: ION403
“RoboClaw 2×15A Motor Controller”, Item Id: ION412
“RoboClaw 2×30A Motor Controller”, Item Id: ION413
“RoboClaw 2×60A Motor Controller”, Item Id: ION414
