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 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, and others.
My AC system seems to dump out different packets than what we've accounted for so far. I've done an analysis of this in a Jupyter notebook for those who care to see. 24h of logs are available upon request.
My AC system seems to dump out different packets than what we've accounted for so far. I've done an analysis of this in a Jupyter notebook for those who care to see. 24h of logs are available upon request.