The DMR Interface board is a general purpose Dual-Channel Radio-Control interface providing proportional motor speed control from two standard Pulse Position Modulated inputs.
The unit utilises microprocessor technology to implement features needed in, for instance, Robotic Control Applications and general purpose High-power Radio Control projects.
Applications include
The DMR-203 is as a stand-alone interface that connects directly to the standard (PPM) outputs of a Radio-Control Receiver and is specifically designed to be used with the range of 4QD's motor speed controllers.
The software implements Dead-band areas on both centre and full stick positions and Signal Validation and Rejection routines for noise immunisation.
The unit includes opto-isolators at the input from the radio control receiver to minimise problems which can otherwise occur from motor noise etc.
| Supply Voltage | 5.7-32.0V* |
| Supply Current | 9.2mA |
| Power Consumption | 50mW |
| Output Method | 2KHz PWM 0-100% Modulation |
| Output Voltage | 4.3V PWModulated |
| Input Signal | |
| Input Method | 40-70Hz PWM 1.5mS Mark Centre [RC STD] |
| Input Voltage | 3.2V - 5.5V Max |
| Input Resistance | 50Kohm |
| Failsafe Parameters | |
| Valid Input | 0.8-2.2mS Mark on PWM Input (450Hz - 1.25kHz approx) |
| Fail Time-out | 300mS |
| Fail Output | 0V (Zero) |
| Physical Attributes | |
| Operating Temperature | -40 - +90deg;C |
| Dimensions mm(")(max) | H 23.0(0.91) * W 54.0(2.12) * D 38.0(1.50) |
| Weight | 53g |
The operating instructions explaining wiring and features are available for download in PDF format.
| Description | Order Code | Price List | Add to cart |
|---|---|---|---|
| Digital Interface Dual Channel Opto (boxed) | DMR-203 | Add |
It is possible that other controllers may be used but the interface is not designed for use with them so instructions are not provided.