This page (revision-23) was last changed on 2022-03-22 20:37 by Murray Altheim

This page was created on 2019-12-23 02:09 by unknown

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At line 24 changed one line
I'd say a sizeable majority of problems people have with Raspberry Pis are related to power supply. It's almost unfortunate that it *can* be powered by USB since that gives people the impression that plugging a Pi (often including additional peripherals) into a USB port, a USB power bank, etc. should just work. The Pi actually is meant to run at 5.1 volts, not 5.0 volts, and will stop operating and reset itself around 4.85v. So at 5 volts the Pi is already working under its optimal voltage, and not all USB power sources even provide 5 volts (some lower, some dangerously higher — fast chargers at 7 volts will immediately smoke test your Pi). Power supply voltages typically brown out (drop) under load, so pushing the power supply with a display, WiFi, a fan, etc. often leads to problems.
I'd say a sizeable majority of problems people have with Raspberry Pis are related to power supply. It's almost unfortunate that it ''can'' be powered by USB since that gives people the impression that plugging a Pi (often including additional peripherals) into a USB port, a USB power bank, etc. should just work. The Pi actually is meant to run at 5.1 volts, not 5.0 volts, and will stop operating and reset itself around 4.85v. So at 5 volts the Pi is already working under its optimal voltage, and not all USB power sources even provide 5 volts (some lower, some dangerously higher — fast chargers at 7 volts will immediately smoke test your Pi). Power supply voltages typically brown out (drop) under load, so pushing the power supply with a display, WiFi, a fan, etc. often leads to problems.