P1P2Serial

Monitor and control your Daikin/Rotex (hybrid) heat pump and various other (Altherma) models via the 2-wire P1/P2 thermostat interface using an ATmega328P, ESP8266, and some electronics. Using a MAX22088, no external power supply is needed. The P1P2Serial library and P1P2Monitor program read and write raw data or system parameters. P1P2Serial may also be used for other Japanese Home Bus System based standards: DIII-NET (F1/F2) bus, Mitsubishi M-Net bus, Toshiba TCC-Link, Hitachi H-link, Panasonic/Sanyo SIII-Net, Haier, York, ..