How much current can you pull through the 5v pin on 3B GPIO?
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I already have a Pimoroni Hyperpixel display hat on there, which is pulling ~ 140mA, but I want to connect a sound board I'm building to it as well. I realize there is a 2.5A limit for the whole schmeer, but how much can the GPIO pin carry?
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Apparently my Google-fu is weak, found the answer. You can pretty much pull whatever the Pi isn't currently using elsewhere, to a total of the 2.5A limit.
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OK, this IS working, but I'm running without heatsinks and a fan because this particular 3 B isn't overclocked, but pulling that current though the board is giving me temp warnings when running close to capacity. Going to re-engineer this.
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@VictimRLSH said in How much current can you pull through the 5v pin on 3B GPIO?:
Apparently my Google-fu is weak, found the answer. You can pretty much pull whatever the Pi isn't currently using elsewhere, to a total of the 2.5A limit.
wow didn't expect that! nice info though, many thanks mine runs a little wired as am suppyling it with 2A charger and without O.C it's sluggish but stable and after O.C to 1300MHz keeps poping of "voltage drop detected!" messages from time to time, any idea why?
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@Ramez I had that problem early on too. Try using a shorter USB cable, and preferably one rated as a "quick charge" cable that has larger gauge wires that will result in less of a voltage drop. A 2.5A supply would be ideal, but if you aren't powering much else off the USB on the pi your 2A supply should do. Many overclock scripts also include a voltage boost to the chips, so you want to make sure your power supply and cable can keep up too.
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