hi all,

first of all: i'm not really planning on continuing this project, though i found the main reasong of the high battery usage: namely the mcu clock!

found out thanks to a teensy 3.2 running in 48 and then 2mhz with a multimeter attached.

48mhz: over 25mA continous

2mhz: less than 3mA continous

so, in theory if this also counts for the samd21 (the zerowatch mcu), i could get battery life up to a week or more!

anyhow, since i don't got that much time right now, i'll keep it with this, bye!