I own some inexpensive yi home cameras. I don't like having a cable run to a wall wart for each camera. Is it possible to run low voltage wires in the walls to a central 5v power supply with sufficient wattage, and splice to the VCC and GND wires in USB cables? Or does power over USB require communication?
Electronic – Can power be distributed to USB devices from central supply
camerapower supplyusb
Best Answer
Many require smart controllers for battery chargers, but not cams or mobo/mobile part.
I prefer a dumb 6 port USB hub with 2.4A per port. (60W max) cheap. So some peripherals need smart data for charger part but not to operate from external power.
There is a wide range of options or you can route suitable phone wires from your 5V ATX supply with a polyfuse to each plug.