Homie for ESP8266

An Arduino for ESP8266 implementation of Homie, an MQTT convention for the IoT.

Download

The Git repository contains the development version of Homie for ESP8266. Stable releases are available on the releases page.

Features

• Automatic connection/reconnection to Wi-Fi/MQTT
• JSON configuration file to configure the device
• Cute HTTP API / Web UI / App to remotely send the configuration to the device and get information about it
• Custom settings
• OTA over MQTT
• Magic bytes
• Available in the PlatformIO registry
• Pretty straightforward sketches, a simple light for example:

#include <Homie.h>

const int PIN_RELAY = 5;

HomieNode lightNode("light", "switch");

bool lightOnHandler(HomieRange range, String value) {
  if (value != "true" && value != "false") return false;

  bool on = (value == "true");
  digitalWrite(PIN_RELAY, on ? HIGH : LOW);
  Homie.setNodeProperty(lightNode, "on").send(value);
  Serial << "Light is " << on ? "on" : "off" << endl;

  return true;
}

void setup() {
  Serial.begin(115200);
  Serial << endl << endl;
  pinMode(PIN_RELAY, OUTPUT);
  digitalWrite(PIN_RELAY, LOW);

  Homie_setFirmware("awesome-relay", "1.0.0");

  lightNode.advertise("on").settable(lightOnHandler);

  Homie.setup();
}

void loop() {
  Homie.loop();
}

Requirements, installation and usage

The project is documented on https://homie-esp8266.readme.io with a Getting started guide and every piece of information you will need.

Donate

I am a student and maintaining Homie for ESP8266 takes time. I am not in need and I will continue to maintain this project as much as I can even without donations. Consider this as a way to tip the project if you like it. 😉