Em, maybe this one is on this topic too, not sure: https://hackaday.io/project/6435-sd-card-sized-board-lets-say-sduino .
@user69011 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.
Em, maybe this one is on this topic too, not sure: https://hackaday.io/project/6435-sd-card-sized-board-lets-say-sduino .