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I'm looking for a way to have an autonomous Raspberry Pi.

The idea is to have a Raspberry Pi outdoor, with a camera, + possible weather sensor and Wi-Fi mesh (I might looking for too much...)

Any idea of the requirement for make it autonomous (self powered by solar / wind)?

I have no idea of how much power I need for the battery to run it 24h in Ireland (pretty dark and cloudy...)

closed as too broad by Steve Robillard, techraf, Aurora0001, joan, Dmitry Grigoryev Mar 5 '18 at 14:19

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3

It depends on how much current the Raspbery Pi consumes and that depends on:

  • Raspberry Pi version
  • What is running on the Raspberry Pi
  • Any add-on hardware

The theoretical approach is :

Power (watt) = U (voltage) x I (Current)

And for the battery: = Current x Hours = Amp/Hours

This is values from a specific setup, just here for reference. enter image description here

http://raspi.tv/2016/how-much-power-does-raspberry-pi3b-use-how-fast-is-it-compared-to-pi2b

I would recommend to meassure the power on your setup and calculate from that. And I would also recommend to search for "power conservation".

Some other references:

https://www.raspberrypi.org/forums/viewtopic.php?t=6050

https://www.pidramble.com/wiki/benchmarks/power-consumption

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