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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.
@Stevie
@tim, is there any specific reason why you want to use Bluetooth? As Gordon wrote, Bluetooth is nice and easy for connecting the Pico to a smartphone. Connecting two Picos is more tricky.
For connecting two Picos, I personally would maybe use a NRF24 with each Pico. Probably cheaper, can have better range and I think it is easier. And supported by a Pico library. Just a thought...