1. Marek Kucmerka
    24. April 2017 @ 13:50

    What do you mean by “If the power is away for a few minutes, the Raspi boots if power is applied again.” ? Does it make any difference if the power is off for a few minutes or a few hours? Thanks,


    • admin
      24. April 2017 @ 17:23

      The Rpi boots automatically, if it is powewd on. It does not boot, if you shut it down and keep it powered. So, the capacitor have to discharge before power comes back. Thats all.


  2. Paul
    26. April 2017 @ 10:37

    Hi Andreas,
    love your work. This video was really interesting for me as I have the following set up;

    RPi Zero W connected to Sparkfun Sunny Buddy MPPT charge controller

    30W solar panel

    7800mAh Lithium Ion battery.

    my mppt controller charges a battery and RPI zero during the day, at night the RPi discharges the battery until the battery’s low voltage circuitry disconnects the battery from any more drainage. The next day the battery remains in this disconnected state eventhough the charge controller is receiving energy from the solar panel. I have to manually disconnect & reconnect the battery to get things working again, i.e. to “wake up” the battery.

    Do you have any ideas how I could have a circuit power down/ disconnect the RPi load when battery voltage gets down to 2.8V and reconnect the load and wake the battery when battery voltage reaches 3.0V or when the solar panels starts to charge again?

    I’m a bit lost…


    Paul a big fan 🙂


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