Data Sheet

2. RC Switch with Digital Output

2.1. Components of the RC Switch with Digital Output

Pololu RC Switch with Digital Output, labeled top view.

The Pololu RC Switch with Digital Output has 7 through holes spaced 0.1″ apart that fit 0.1″ header pins.

RC interface

The GND, VRC, and RC IN pins make up the switch’s RC interface and can be connected directly to an RC receiver

or servo controller:

• The GND pin is the ground or reference voltage.

• The VRC pin connects to the RC power line. The power from VRC is not used by default, but a jumper on

the bottom of the board can be bridged with solder to power the board from VRC.

• The RC IN pin is the RC signal input. The switch measures the width of pulses on this line and uses that to

decide whether to activate or not.

Power

The VCC pin powers the basic functions of the board and needs to be

connected to a power source between 2.5 V and 5.5 V. The VCC=VRC

jumper on the bottom of the board can be bridged with solder to power the

board from VRC or to pass power from VCC to the RC receiver.

Outputs and indicator LED

The RC switch provides feedback about what state it is in via a yellow

indicator LED. The LED behavior is described in Section 8. Status

information is also provided by two outputs:

• The GOOD pin indicates the presence of a valid RC signal (10–330 Hz

pulse rate, 0.5–2.5 ms pulse width).

• The OUT pin indicates whether the MOSFET is on.

2. RC Switch with Digital Output Page 4 of 35