Arduino is responsible for passing the keyboard input into the ESP-01 module (ESP8266 chip). After receiving an alphanumerical character via the serial connection, ESP passes a request to my webserver, which in turn calls the Tuya API based on the code. Arduino flashes a LED depending on the result (green - OK, yellow - website error, red - network error).
A few reasons behind this set-up:
- Arduino UNO and ESP-01 were the only suitable devices I've had on hand;
- I've ran into pin count limitations that prevented me from utilizing only the ESP-01;
- I don't call the API directly from ESP, but rather store the light presets on my server in order to prevent unnecessary firmware flashes.
The project is licensed under the Apache License, Version 2.0.