Run Fipy USB Powerbank

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  • @tfgm Not directly with the FiPy. You can use a chip like INA219 to monitor the current & voltage at the wire getting in to the device, and then you can determine the mAh that have been consumed, and in combinations with the voltage also the energy. The timing resolution is not very good, mostly limited by the time you allow your code to measure. So you will miss small spikes & drops.
    For convenience, there are modules with that chip available.
    There are Python drivers from Adafruit and one here, tested on ESP32 and ESP8266:
    Both should be close to Pycom's python. The gap, if at all, should be in the I2C section.

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