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Troubleshooting • PI 4 - gpio no more working after input pull-up

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I have raspbian 64bit.

I wanted to use the gpio as an input pull-up and then as an output, but when I wanted to move the pin to a breadboard, the pins changed state and now I can't use them properly.

[*]GPIO 26 remains in a low state at 0V regardless of whether it's in input (pullup/down) or output with a high state.

[*]The gpio 6 internal pull-up no longer works (the pin is at 0.8V in input pull-up). In output mode with a high state the pin is at about 1.5V and the high state is not detected via software.

[*]gpio 24 it has a permanent high state at 3V regardless of its input output mode.

I don't think I did anything "dangerous" for the pins - the breadboard wasn't connected, except for the gpio 26, where I connected the pull-up input to ground.

Are the pins dead? How can I avoid burning the other pins? I really don't understand my mistake

Statistics: Posted by capacityx — Sun Feb 02, 2025 12:14 am — Replies 0 — Views 28



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