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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.
@hansamann
Thx for the idea with deepSleep - never looked at that. I will have a more detailed look at this later today, but what would happen if I have the HC-05 bluetooth module soldered on. Can I still connect to it while espruino is in deep sleep?
I am using bluetooth right now to read the counter values. What would also work is that BTN1 wakes espruino from deep sleep, then if connected over bluetooth serial, it would stay on.