3 ms·
The only time I have ever witnessed a Pi actually using 2.5A is when it had an official touch screen attached, a camera running, as well as something in each US
by naikrovek 8y ago
The only time I have ever witnessed a Pi actually using 2.5A is when it had an official touch screen attached, a camera running, as well as something in each USB port.
I think continuous 2.5A is not needed, but is needed for an instant or two, here and there, if you are running headless.
All most people would need is a sizeable capacitor across the input power pins, perhaps.
Power supplies (people buying cheap ones, or being supplied with cheap ones -- looking at you, Amazon raspi kit sellers) are the number one source of failures that I have encountered with the pi.
A good power supply is a lot more expensive than a cheap one, and people are reluctant to invest in a $20 supply when a $5 one has the same rating, so I can't blame anyone for that other than the sellers.
- giobox 8y agoYou’re absolutely right, the power draw is hugely affected by how many USB devices you attach etc. Stick with the recommended 2.5A though and you are likely to be fine. Much of the issues low power causes are often weird as well, it’s often not obvious it’s the root cause.