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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.
@RaoulDuke
I keep getting an error message in red that says "CALLBACK" und the bottom of the screen.
If that happens, all watches, timeouts and intervals seem to stop, but the watch still responds to bluetooth and button presses. It seems to happen only when connected to gadgetbridge.