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mangavalkandClaude Opus 5.5 b347f1c63f Import ESP_UniClock (upstream 1189810)

Vendored from https://github.com/gpeter62/ESP_UniClock: the sketch
source, the web UI and the libraries the ESP8266 build needs, unpacked
from the bundled zips. Adds a PlatformIO project for the ESP-12. The
source is unchanged; local changes follow as separate commits.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

2026-10-25 20:48:04 +01:00

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Arduino Home Assistant integration

ArduinoHA allows to integrate an Arduino/ESP based device with Home Assistant using MQTT. The library is designed to use as little resources (RAM/flash) as possible. Initially it was optimized to work on Arduino Uno with Ethernet Shield, but I successfully use it on ESP8266/ESP8255 boards in my projects.

Features

MQTT discovery (device is added to the Home Assistant panel automatically)
MQTT Last Will and Testament
Support for custom MQTT messages (publishing and subscribing)
Auto reconnect with MQTT broker
Reporting availability (online/offline states) of a device

Supported HA types

Binary sensors
Covers
Fans
Device triggers
Switches
Sensors
Tag scanner
HVACs (side note: HVACs requires more flash size than other HA types. It's not suitable for Arduino Nano/Uno)

Examples

Tested boards

Arduino Uno
Arduino Mega
NodeMCU
ESP-01
Generic ESP8266/ESP8255
Arduino Nano 33 IoT (SAMD)

Tested devices

Controllino Maxi (standard/pure/automation/power)
Controllino Mega (standard/pure)
Sonoff Dual R2
Sonoff Basic
Sonoff Mini
Tuya Wi-Fi switch module
Tuya Wi-Fi curtain module

Tested Arduino Shields

Arduino Ethernet Shield (WizNet W5100)

Roadmap

FAQ + Home Assistant setup instructions
Documentation of the library
Unit tests
Reduce flash memory usage
Add support for HA lights

Unsupported features

The library doesn't support all features of the MQTT integration. If you need support for a new feature please open a new issue in the repository.

License

This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License v3.0 as published by the Free Software Foundation.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program. If not, see https://www.gnu.org/licenses/gpl.html

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