Reading GPIO binary sensor does not work

[CaptTom (Tom)]

Not sure if applies to the Pi 2 B, but there’s a bunch of information about GPIO on a Pi 3 and 4 here:

Pi 4 and Gpio Issues

I’ve been running Pi3 with about 10 Reed sensors that were connected straight to Gpio pins without any issues. When I recently migrated to Pi4 I noticed that only some pins are actually turned on: gpio15 gpio14 gpio8 gpio7 gpio6 gpio5 gpio4 gpio3 gpio2 gpio1 gpio0 I came to this conclusion after enabling all of the Gpio pins in the HA config file. With nothing hooked up to them only the ones above showed up as “on” (if they are active they should show up as on/active). When you go to…

and here:

Problems Reading GPIO Pins

I’ve done a lot of searching, and posted a few specific questions, and I’m still floundering. Maybe if I ask this more generically someone can point me in the right direction… Does anybody successfully use GPIO pins for a simple input binary switch? How? I have a Raspberry Pi 3B+ running a Hass.io and HA at the current version. I have three GPIO pins connected to some relay contacts which are always either “on” (closed) or “off” (open.) It works exactly as designed… usually. But, at least se…

and here:

Pi GPIO Binary Sesnsor

Hello Im having a bit of touble with binary sensor on Pi GPIO, I have exhausted all hard wiring options, resistors, short wires, long wires, ferrite rings etc connected to various push button types (all normally open going normally closed momentary) in a live house enviroment. I have also tried a momentary relay connected to the GPIO input as this toggles in minimal ms. im fully educated on relays, wires etc as this has been my day to day job for many years, as a IP CCTV/Network Engineer. So …

Summary: HA doesn’t do GPIO pins well.