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Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
@Gordon
Ok, well if the remote is 433MHz then the protocol is probably pretty basic - it's just turning the signal on and off at the right times.
You might just be able to use Espruino with this: https://www.espruino.com/433Mhz#receiving
Having said that, I'd probably just attach a 433mhz transmitter to an ESP32 running Esphome now: https://esphome.io/components/remote_transmitter.html
And then you can integrate it with HomeAssistant and all your other things