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