I have to power 20 Raspberry Pi 3 units from a few 5V 10A power DC power supplies. I have little experience in electronics. The RPis can be up to 1.5m apart from one another. A friend of mine suggested I use four such power supplies and create a power circuit for each 5 RPis. I am essentially looking to have multiple 5V lines passing through the ceiling and individual lines come about 1-2m down to each RPi. The things I need help with are the following:
- What type of wire I would need
- I need a sturdy connection from the main 5V line to the RPi (which I want to be able to temporarily disconnect if need be) and I am not sure - here I was thinking about having some kind of sockets on the main 5V line, perhaps some kind of screw-in connector
- How many power supplies do I need and what is this dependent on (length, thickness of cable; etc)
I expect the individual units to draw less than 1.5A at any given point, as they will only power an accelerometer and their onboard Wi-Fi and BLE.