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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.
@AccMagno
Yeah, I was wondering why bangle doesn't have gyro. I thought magnetometer is there for that.
Your idea is good. I'm drying to measure hand speed when you throw disk or ball, so there is time frame when there is no acceleration( I can get the gravity direction) and the throw will last 2s so I might get the right speed and maybe even hand location.