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for my current project I need to supply the Pi via the GPIO pins with power. I know that I'm bypassing some security features, but my circuit has new ones implemented.

The problem is, that I'm hocking Pin 2 to 5V + and Pin 6 to GND. The Pi turns on and uses 800 mA. But I don't get an HDMI signal, and the Ethernet port is also not working. I already tried adding "hdmi_force_hotplug=1" to the config.txt. Is it a coding "problem" and how can I solve it?

HDMI/Ethernet work when I power the Pi normally, via USB, that's why I'm confused.

I use a Raspberry 4B 8GB RAM

I had a look on HATs which supply the Pi via GPIO. The only extra think they have, is a Load Switch. Could this be the solution? HAT: https://www.tinkerforge.com/de/shop/hat-brick.html Load Switch: TPS22975

Andreas
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1 Answers1

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You need to supply more power.

Your power supply to the GPIO is clearly inadequate.

It could be the wires used or the power supply or poor connections. We can't guess which.

joan
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