It's not a bug but also no feature request (i guess)

[nightflasher]

I updated my octoprint on RPi0v2 with a better camera (waveshare imx219) and i have my LED Strip connected to GPIO-4 (Pin7). I have also a waveshare 3.5" Touchscreen attached for OctoDash - so many GPIO Pins are in use.
Before i've upgraded to a better camera, the OctoLight was working fine, but somehow it stopped working and the latest plugin update change PIN to GPIO and i got no switching lights anymore. So I've changed the LED Pin and still nothing.
When i manually trigger the pin high (raspi-gpio) the camera stops working, which triggered me to think "are camera csi and gpio sharing pins?" and i found a project, where there is in fact a sharing problem.

https://www.researchgate.net/figure/RaspberryPi-interfaces-in-use-CSI-camera-connector-and-GPIO-connector-with-attached-pins_fig2_346145751

so i have GPIO occupied by the waveshare touchscreen and some by the camera - is it possible to detect free GPIO and show it in the plugin setup to say "hey, your lights/buttons needs to be connected to those free GPIO"?

[thomst08]

Hey nightflasher,

Wow, that is interesting and good research.
I honestly have no idea to where to being on this issue, but I will have to have a look. If it is possible to detect activity on another pin then I might be able to at least show a notification, but I will need to look into this.
There might be another plugin to handle this???

Ether way, give me some time, and let me think about how this could be done, it might be a little while before I have something to cater to this kind of issue.

Thanks for taking the time to report this.

[thomst08]

Hey @nightflasher,

Sorry for the delay in this, an issue popped up recently, looking back at this, it might? have been related to your issue.
If this is still an issue, can you update to the latest build of OctoLight as it changes the way it interacts with the GPIO pins. This might solve the issue.

[nightflasher]

Hey,
it's okay to take your time - i also need my time to do stuff. at the moment, 3d printing is a bit behind - i'm exhausted all over but will try in a few weeks.

thanks for letting me know, that you're still present.

[thomst08]

It's all good,

Just note, there has been an update to OctoPi's image, if your game... format your Pi and install the latest nightly build, then install everything again, there is a chance there was/is a bug with the older OS.
But I am guessing from what you've said, it might be a GPIO/hardware thing.... The newest version of OctoPi is running a later version of the Pi OS, the new kernel has some tweaks that don't work with the RPi.GPIO package fully, hence the recent OctoLight update.
To utilize the new version with the newest packages, the later OS or kernel needs to be installed, it might use the older package otherwise. (sometimes formatting is easier)

If you have a spare SD card, might be worth trying.
I will have to see if I can emulate your issue when I have time (Uni's demanding and I don't have a Pi Zero, so I will see what I can find).

Keep me posted whatever happens :)