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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.
@OwenBrotherwood
https://www.digikey.com/en/product-highlight/l/laird-embedded-wireless-solutions/rm186-191-wireless-modules
shows an nRF51 and a Semtech SX1272