this post was submitted on 13 Feb 2026
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Measuring Power Draw on a Raspberry Pi (piefed.zip)
submitted 2 weeks ago* (last edited 2 weeks ago) by Vicinus@piefed.zip to c/askelectronics@discuss.tchncs.de
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I recently got a Raspberry Pi Zero 2 W.

I'm hoping to set up a circuit (with attached solar panel and battery) to activate at regular intervals to preform a servo motor movement. I'm not sure how often I can make the activation, as I don't know the power draw of the board or movement, or how fast the solar panel will charge the battery. I hoping there is a way to measure the power draw of the board and attached circuit, along with the battery level, over an extended time frame and in an automated manner. Is this possible?

Thanks for your time.

Edit: Addional info:

  • This would be likely a one off characterization.
  • I would like time series data over several days or longer.
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[–] ignotum@lemmy.world 3 points 2 weeks ago

Certain BMS (battery management system) circuits track the power draw and remaining charge, that could be an option?

I often just look at the battery voltage, if it's below some limit then it goes right back to sleep to save power, it's quick and dirty, but you loose out on a lot of the battery capacity (battery voltage only roughly correlates to remaining charge)