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Very nice, look forward to the full writeup

Hello @Hafenstrand

ok, I see. Unfortunately I don't think that 5 days (= 120 h) is achievable with the TailBat's 190 mAh capacity. Measuring the power consumption of the M5Atom in deep sleep I get about 11 mA (at 5V). However with 190 mAh in the TailBat you'd need to get the current in deep sleep mode down to about 1.6 mA.

BTW: 1 mA is consumed by the RGB LED even if it is off. I assume the rest is consumed by the USB and 3.3 V converter chip inside the M5Atom.

Thanks
Felix

I want to thank @m5stack for tacking action. To setup https on the community site.