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Mayfly Power Consumption

Home Forums Mayfly Data Logger Mayfly Power Consumption

This topic contains 6 replies, has 3 voices, and was last updated by  Shannon Hicks 2 years, 9 months ago.

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  • #1583

    John Smutny
    Participant

    Right now I am trying to power the mayfly using a battery pack, but I am not sure how much power the Mayfly and all of it’s applications (XBEE port, SD card reader) consume. I am only concerned with powering the on board applications, since all external sensors have there own power needs. Are there any references to the power or current requirements for the board and how much is needed?

  • #1585

    Shannon Hicks
    Keymaster

    Yes, I’ve done a variety of power measurements with the Mayfly board, so I can publish a table showing the different options. I’ll put a link to it here when the page is posted.

  • #1586

    John Smutny
    Participant

    Ok, that sounds good. By the way thank you for being so helpful with the switch error, everything is working fine now

  • #1674

    Shannon Hicks
    Keymaster

    I haven’t had a chance to make a table of all of the power usage data from my tests, but here are some of the more important measurements:

    Mayfly current when board is powered and idle: 6.5 mA
    Mayfly current when MCU put to sleep: 0.27 mA (or 270 uA)
    Current when asleep with microSD card in the socket: 0.43 mA (or 430 uA)

  • #1680

    DaveE
    Participant

    Hi Steve,

    Can you provide a little bit of example code that demonstrates how to put the MCU to sleep?

    Thanks
    Dave

  • #1682

    John Smutny
    Participant

    Cool, thank you Steve for the measurements, as these will provide enough information to approximate the size of battery I will need

  • #1684

    Shannon Hicks
    Keymaster

    For most of my loggers, I use a 1200mah or 2500mah battery, depending on how much power the external sensors draw, what size solar panel I’m using, and how shady the deployment site might be.

    I’m optimizing and documenting the sleeping logger Arduino code and will post it as soon as it is ready.

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