Although have you checked out the existing 433Mhz stuff on the website? There's already quite a bit there for controlling 433Mhz devices from JS
@Gordon started
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.
Although have you checked out the existing 433Mhz stuff on the website? There's already quite a bit there for controlling 433Mhz devices from JS