4 layers34 × 49 mm

CN105
Qeteshpony/CN105
Mitsubishi CN105 compatible heatpump controller for ESPHome and Home Assistant
33 parts5BSD-2-Clause
KiCad boards from 2 GitHub repositories tagged “mitsubishi”, the most starred first; open any of them in PCBKit.

Qeteshpony/CN105
Mitsubishi CN105 compatible heatpump controller for ESPHome and Home Assistant

hansrune/HeatPumpControl
ESP32c3 board with IR blaster and serial ports for heat pump control over local WiFi with ESPHome or ESPEasy firmwares