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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.
@fanoush
I have 2.0, the first one still with kl27z. I'd like to have the 2.20 with two 52833 chips (before they downgraded interface chip to 52820 in 2.21) so I could run Espruino on both :-)
And BTW, there is no 2.22 described here https://microbit.org/get-started/user-guide/firmware/