arduino-home-assistant/examples

ArduinoHA examples

Each directory is an Arduino sketch. Start with the network example matching your board, then pick an entity example from the table. Copy credentials into your local development configuration; do not commit them in a sketch.

Starting point	Use it for
nodemcu	Basic ESP8266 Wi-Fi and MQTT connection
nano33iot	Basic Arduino Nano 33 IoT connection
mqtt-with-credentials	MQTT authentication
mqtt-advanced	Custom MQTT subscriptions and publishing
availability	Per-entity availability
advanced-availability	Shared availability and MQTT Last Will

Entity examples

Example	Home Assistant behaviour
binary-sensor	Door/contact-style binary state
button	Press action
cover	Open, close, and stop commands
esp32-cam	ESP32 camera preview
fan	State and speed commands
hvac	Modes, power, and target temperature
led-switch	Basic writable switch
light	Brightness, colour temperature, and RGB
lock	Writable lock state
multi-state-button	Device triggers from a wall switch
multi-switch	Multiple writable switches
number	Writable numeric value
scene	Scene trigger
select	Writable option list
sensor	String state sensor
sensor-analog	Analog voltage measurement
sensor-integer	Integer uptime measurement
tag-scanner	RFID tag reporting

The examples are intentionally small, not production firmware frameworks. For reusable Wi-Fi configuration, MQTT wiring, profiles, OTA, and migrations, use DeviceFramework in a consuming firmware.

See the entity guide and project overview.