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components/panasonic_heatpump/README.md
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### What you need
* ESPHome compatible microcontroller (e.g. ESP8266, ESP32, ESP32-S2, ESP32-C3, ...)
* Bi-Directional Logic Level Converter (to convert 5V UART signal from the heatpump to 3.3V UART signal of the ESP controller)
* ADUM1201 Dual Channel Digital Magnetic Isolator
(to convert 5V UART signal from the heatpump to 3.3V UART signal of the ESP controller)
* CN-CNT cable to Heatpump/CZ-TAW1 (see [Heishamon](https://github.com/Egyras/HeishaMon) github site for more information)
### Wiring
![wiring.jpeg](../../prototypes/panasonic_heatpump/wiring.jpeg)
You may also connect the +5V pin of the heatpump to the +5V pin of the ESP board.
But for me the current (mA) provided by the heatpump was quite unstable so I powered my ESP board through an USB cable.
<img src="../../prototypes/panasonic_heatpump/wiring_adum1201.png" alt="wiring_adum1201.png" width="600"/>
### CN-CNT Pinout (from top to bottom)