Data Sheet

1. Overview

The Pololu RC switches allow you to turn devices on and off using standard radio control (RC) pulses.

These switches can be used with standard hobby RC systems for radio-controlled switch applications.

Example applications include using extra channels on an RC receiver or servo controller to turn on

lights, motors, or irrigation valves.

The RC switch measures the width of incoming RC pulses and compares it to a user-configurable

threshold (with ±64 µs of hysteresis) to decide whether to activate the switch. By default, the threshold

is approximately 1700 μs, with switch activation occurring above the threshold (longer pulses), but the

switch has a learning mode that allows you to change the threshold and the activation direction. A

safe-start feature reduces the likelihood of unexpected activation on all RC switches except the RC

Servo Multiplexer.

The RC Switch family

The Pololu RC Switch with Digital Output [https://www.pololu.com/product/2801] is the

most basic RC switch. This extremely compact (0.4″ × 0.4″) board can fit on a U.S.

dime and has two digital outputs that indicate whether the switch is active and whether

the input signal is valid. (These outputs are also available on all the other RC switches.)

The Pololu RC Switch with Small Low-Side MOSFET [https://www.pololu.com/product/

2802] has an integrated low-side MOSFET that allows it to drive small loads (up to

around 3 A). It ships with male header pins included but not soldered in.

1. Overview Page 3 of 45