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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
Hi Steve,
Yes, absolutely! That sounds extremely easy to implement.
The only minor gotcha is you can't use Web Bluetooth because you'd need to look at advertising messages, but if you're writing native iOS/Android apps that should be easy.
Advertising message length is extremely limited on Bluetooth LE (~20 bytes usable), but you can still 'rotate' advertising messages so after a second or two the app will have received all of the advertising messages needed to piece something bigger back together.