minimize sleep power consumption for solar powered system

Discussion in 'General Discussion' started by spinxz, May 4, 2015.

  1. spinxz

    spinxz New Member

    Dec 26, 2013
    Likes Received:
    I am trying to build a sensor/meteorological station with the Udoo. However, the system will have to run "in the wild" on a battery which is charged with a solar panel. The station transmits sensor data via a 4G modem.

    The Udoo (quad) uses approx. 450mA when running without peripherals. This is far too much for my solar/battery powered system. Instead, I just wake up the Udoo every hour to read out the sensor data and transmit them to a webserver.

    So my question is what is the best way to put the Udoo to sleep for a certain interval and wake it up again.

    I tested
    rtcwake -m mem -s 60
    i.e. suspend to ram, off and disk mode are not supported. With rtcwake -m mem I managed to cut the power consumption to 85mA. In contrast, when the Udoo is turned off, the system/voltage regulator still consumes about 33mA.

    Ideally, I would like to get below 15mA but even less then 40mA would help me.
    Of course some external clock/timer could be used to cut the power but I would like to avoid that.

    1) Is there a better way than rtcwake -m mem to put Udoo to sleep for a certain time with respect to power consumption?
    2) Could the Arduino be used somehow?
    3) What exactly is the battery connector J25 good for? Could I use it to connect a more efficient voltage regulator?
    4) What is the required voltage range on the J25 battery connector?

  2. vpeter

    vpeter Active Member

    Nov 29, 2014
    Likes Received:
  3. MrSeanMan

    MrSeanMan New Member

    Dec 14, 2017
    Likes Received:

Share This Page