Raspberry Pi 400 • How to Provide Power from Desktop Power Supply

I am not sure this is the correct group, but I couldn't find a hardware group specific to the Zero 2 W. I have a Raspberry Pi Zero 2 W. The first USB connector only supplies power. I can see that on the schematic located here https://datasheets.raspberrypi.com/rpiz ... QuMC4wLjA. for connector J1 in the upper left corner. Only pin 1, which receives 5V power, and pin 5, which connects to ground, are used.

In the lower right of the schematic for connector J8 pins 2,4 are also connected to 5 Volts, presumably from pin1 of the USB connector J1.

I want to provide power from a desktop power supply set to 5 volts with a 2 amps current limit. This power supply displays the amount of current actually being pulled. It will allow me to monitor the current.

If I do not connect anything to the USB at connector J1, can I connect my desktop power supply to pin 2 and/or 4 and the ground of the power supply to a GND pin on J8 to provide power?

This would allow me to monitor the current being pulled by the Zero 2 W. It will also give me a more convenient power on/off button.

I'd rather use pins 2,4 on the J8 connector than cut up a USB cable and provide power and ground on the wires that drive power and ground on the cable.

Thanks
Chris

Statistics: Posted by chriskot870 — Fri Aug 30, 2024 7:43 pm

---