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Beginners • Re: Max Power Draw from Face Pins

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I am doing a custom build that utilizes a raspberry pi 5 to control a small autonomous vehicle. Motor has its own esc and battery and the pi is on a separate power bank. I still need to power the steering servo which draws a maximum of 1.4 amps. I am thinking I can power it off the 5v rail of the Pi 5 face pins. However, I keep seeing different figures being thrown about for the current supplied to the face pins under various conditions. I am finding it hard to find that info in the data sheets that I have come across. Does anyone have this information or a link to the relevant datasheets?

I am brand new to raspberry pi and linux but I have some c/c++ knowledge and a little python under my belt.
You mean the GPIO pins? Those are limited, IIRC, to 16mA each, and an aggregate total of around 50mA. You need to use the pins to drive (the base of) transistors acting as current amplifiers. Even better would be to use proper optoisolators to protect the GPIO pins.

Statistics: Posted by W. H. Heydt — Sat Oct 12, 2024 4:06 am



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