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3246799 Jul 11, 2016
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* The MySensors Arduino library handles the wireless radio link and protocol
* between your home built sensors/actuators and HA controller of choice.
* The sensors forms a self healing radio network with optional repeaters. Each
* repeater and gateway builds a routing tables in EEPROM which keeps track of the
* network topology allowing messages to be routed to nodes.
* Created by Henrik Ekblad <>
* Copyright (C) 2013-2015 Sensnology AB
* Full contributor list:
* Documentation:
* Support Forum:
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* version 2 as published by the Free Software Foundation.
* Simple binary switch example
* Connect button or door/window reed switch between
* digitial I/O pin 3 (BUTTON_PIN below) and GND.
// Enable debug prints to serial monitor
#define MY_DEBUG
// Enable and select radio type attached
#define MY_RADIO_NRF24
//#define MY_RADIO_RFM69
#include <SPI.h>
#include <MySensors.h>
#include <Bounce2.h>
#define CHILD_ID 3
#define BUTTON_PIN 3 // Arduino Digital I/O pin for button/reed switch
Bounce debouncer = Bounce();
int oldValue=-1;
// Change to V_LIGHT if you use S_LIGHT in presentation below
MyMessage msg(CHILD_ID,V_TRIPPED);
void setup()
// Setup the button
// Activate internal pull-up
// After setting up the button, setup debouncer
void presentation() {
// Register binary input sensor to gw (they will be created as child devices)
// You can use S_DOOR, S_MOTION or S_LIGHT here depending on your usage.
// If S_LIGHT is used, remember to update variable type you send in. See "msg" above.
present(CHILD_ID, S_DOOR);
// Check if digital input has changed and send in new value
void loop()
// Get the update value
int value =;
if (value != oldValue) {
// Send in the new value
send(msg.set(value==HIGH ? 1 : 0));
oldValue = value;