Raspberry Pi Current Requirements
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Wasn’t able to find an answer to this searching through the forums, but does anyone have any measurements on the current draw of their Raspberry Pi while running MagicMirror?
The original plan I had was to shove my Raspberry Pi 3 Model B (not a B+) behind a TV, hook it up via HDMI, and power it through one of the TV’s USB ports. However I recently discovered that the ports only output 5V at 0.5A which I’m worried is on the low side.
Will this be enough to run MagicMirror? If not, how many amps does your unit usually draw?
*edit: Nevermind, looks like this won’t be anywhere near enough power. Found this forum post saying they had a port outputting 2.1A.
Time to buy a wall wart…
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@sdetweil Thanks yeah, I made my post after looking at the website. With 0.4A bare plus the 0.05A for the HDMI it seemed theoretically possible, but I didn’t know how much processing power MagicMirror would take up on top of that. So I was wondering if anyone had ever taken measurements in the past.
It doesn’t seem like it’ll work though, since in the forum post I edited in, they had a RPi3B that worked at 2.1A but a RPi3B+ that didn’t, meaning a 0.1A increase might have been enough to kick off the low power warning. It’s entirely possible the TV just had a USB that didn’t provide clean power, but regardless it seems like 0.5A won’t be enough.
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@lost the specs say 2.5a
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I’ve gotten away with 2.4A on a Raspberry Pi 3B+, but that’s riding the edge of acceptable.
