This is an alpha version of this code,released here in the hope that it will help others to get the basic hardware (ESP32 + WizNet W5500 Ethernet module) working. The original ESP8266 version of this ...
This adapter is designed to connect an OpenTherm compatible boiler to any TTL port (TTL-USB, ESP8266, ESP32, Arduino, etc). Same size as popular RS485-TTL module for more compatibility.
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