so i want to setup a remote wifi camera, battery powered with solar charging.
Proj Plan: choose smallest setup battery/solar panel / camera that will achieve my goal
Goal: Daytime only monitoring , motion detection and occasionally (2 times day connect and stream for few minutes), camera can be off from sunset to dawn.
some research on web shows the cameras i am looking at vary in range of
5-6V @ 250 -- 750 mA current where camera is (On/No WiFi connection) to (On/Wifi connected/ streaming video / panning / zooming)The average seems to be around 500 mA (On/Wifi connected / motion control enabled)
So, is the problem as simple as some math of amp hours and power output ?
12 hours daylight gives 12 x 500mA avg camera current = 6000 mA for daytime operation.so if it is powered by a solar panel it must be ?? capable of producing
6000 mA over the 12 hours ??If have a 5w 12v solar panel that gives me .6 A of 12 v for 12 hours =
7200 mA power ? which should cover the power requirements ?However , from experimenting with the solar panel it seems to fluctuate its power output and since the camera is not going to be happy with that for on/off/pan/zoom etc i will likely need a battery for buffering camera power draw fluctuations ??
I suppose then i need some sort of proper regulator to connect the solar panel to and manage charging the battery ?
Is that it ? how to size the battery ?? do i compare solar panel output to required camera and then subtract.
solar panel is capable of say 4000 mA hour reliable power so i need 6000 mA - 4000 mA ==> 2000 mA hour battery ??
much advice appreciated
robb
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