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Arnold-n / P1P2MQTT

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Star 365

Monitor and control Daikin/Rotex (hybrid/Altherma) heat pumps via the 2-wire P1/P2 thermostat interface with an ATmega328P, ESP8266, and electronics. The P1P2Serial library and P1P2Monitor program perform low-level bus operation, the P1P2-bridge-esp8266 program interprets data from/to MQTT supporting Home Assistant MQTT discovery. P1P2Serial may…

home-automation mqtt diy hvac m-net heating-control daikin p1p2 rotex tcc-link h-link siii-net f1f2 diii-net hoval altherma
  • Updated Mar 30, 2025
  • C++

budulinek / arduino-altherma-controller

Star 56

Arduino-based controller for Daikin Altherma heat pumps. The controller connect to the Altherma heat pump via P1/P2 bus, has a built-in webserver for configuration (of the controller itself). Integration to Loxone home automation system via UDP protocol, allows you to monitor and control your Altherma heat pump.

arduino loxone daikin arduino-webserver p1p2 arduino-eeprom daikin-altherma
  • Updated Mar 9, 2025
  • C++

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