A small Arduino script to control a garage door opener.

BreadboardLayout.png

garageDoor.ino

#include "ESPHelper.h"

#define STATUS "/status"
#define RELAY_TOPIC "/home/down/garage"
#define HOSTNAME "RLY-GarageDoor"
#define RELAY_PIN 3


char* relayTopic = RELAY_TOPIC;
String statusTopic;
char replyTopic[50];

const int relayPin = RELAY_PIN;

//will track the door state but is currently unused.
bool currentState = false;

netInfo homeNet = {.name = "NETWORK NICKNAME", .mqtt = "YOUR MQTT-IP", .ssid = "YOUR SSID", .pass = "YOUR NETWORK PASS"};
ESPHelper myESP(&homeNet);

void setup() {
	//generate status topic string
	statusTopic = relayTopic;
	statusTopic.concat(STATUS);
	statusTopic.toCharArray(replyTopic, 50);

	myESP.OTA_enable();
	myESP.OTA_setPassword("OTA_PASSWORD");
	myESP.OTA_setHostnameWithVersion(HOSTNAME);

	myESP.enableHeartbeat(1);
	myESP.setHopping(false);
	myESP.addSubscription(RELAY_TOPIC);
	myESP.begin();
	myESP.setCallback(callback);

 	pinMode(relayPin, OUTPUT);
 	digitalWrite(relayPin, LOW);
}

	
void loop(){
	myESP.loop();
	yield();
}


void callback(char* topic, byte* payload, unsigned int length) {
	if(payload[0] == '1'){
		toggleDoor();
	}
}

//toggle the garage door between open and closed
void toggleDoor(){
	digitalWrite(relayPin, HIGH);
	delay(100);
	digitalWrite(relayPin, LOW);
}

@rqleslie did you ever figure it out with a NodeMCU board? i was looking for some direction.