ESPHome-econet is a great first ESPHome project due to the easy hardware setup. All that's needed to run ESPHome-econet is an ESP32 or ESP8266 microcontroller and an RS485 Interface, plus a phone cord ...

The ESP32 is a microcontroller that provides an API for Bluetooth A2DP which can be used to receive sound data e.g. from your Mobile Phone and makes it available via a callback method. The output is a ...