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As mentioned in the comments, your choice of words suggests that a clarification is needed: Batteries are charged - a RPi is powered A USB power supply that plugs into a wall outlet will work fine if it can source 2.5 Amps. The power supply should have this specification printed on the housing, or embossed in the plastic body. You don't necessarily need a ...


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you can use udev rules to set things like file mode bits and user/group for the devices - so for point c) in your question it's fairly simple - maybe point b) as well, but not point a) e.g. create file /etc/udev/rules.d/mydevices.rules with the content SUBSYSTEMS=="usb", ATTRS{idVendor}=="1234", ATTRS{idProduct}=="abcd", MODE=&...


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You are clutching at straws and attempting to follow magic answers. The full circuit details of the Pi are not published so no one actually knows what PP27 is. It is possible to trace circuitry on a board (I have done this) but it is very difficult on a multi layer board. I do not doubt that you have some problem but searching the web is not going to solve ...


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