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If you didn't already know, you can power the Pi from the GPIO pins. By supplying pin 2 with 5v and connecting a ground to pin 6, you can power the Pi. My question; does it matter which pins are used? Could I use pin 4 for 5v and pin 14 for ground? (Really I'm just interested in if I can use a different ground pin.) Also, what is the max current that can be drawn when powered via GPIO, my Zero can draw up to 180mA, so I want to make sure that this is safe. Why or why not is this the case?

All my pin references came from the picture below.

enter image description here

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Patrick Cook
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2 Answers2

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All the pins are connected together. As to whether it is safe it depends on the power source (and partly your definition of safe). AFAIK the Zero has no power protection (there is no published circuit).

Milliways
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You can NOT power the Pi from GPIO.

You can power via the power rail pins on the expansion header.

All the pins on the same power rail are connected together.

It does not matter which particular 5V pin or ground pin you use.

joan
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