Button Press not registered about fanshim-python

[scottsweb]

Would this explain why I am unable to power down the fan? Running the example service the LED is behaving as expected but the fan remains on at all times.

[Gadgetoid]

It would indeed!

Update: We're doing what we can to help with the RPi.GPIO fixes, but ultimately they're completely out of our control. I'm in no position to put a timeline on things but I would, at a complete and total guess, expect an update by the end of next week.

[scottsweb]

@thallada I had the same problem with two shims. I think it must have been an issue with the Pi header being slightly off shape or something. The solution was to add a tiny drop of solder on pin 12 ... you can test it with a jumper wire first to make a good connection between the shim and the Pi.

[mtowara]

And the answer is: The button is configured wrong, or there has been a hardware revision.
fanshim = FanShim(pin_button=3) works

[Gadgetoid]

If you're using a Pi 4, this is because RPi.GPIO currently does not support setting pull up/down states on pins, so the button doesn't have the correct pull resistor set.

The button is additionally connected to BCM3 only to bring the Pi out of a low power state, and this workaround would conflict with any i2c devices you might use. If you're okay with that- then using BCM3 is fine- since it's part of the i2c bus it actually has a hardware pull-up resistor already in place, so RPi.GPIO not working doesn't effect it.

[mtowara]

Ok, then this issue will propably fix itself in a few days time once RPi.GPIO is fixed :)

[mtowara]

@scottsweb fyi, the fan part always worked fine for me. (as did the led)

[scottsweb]

Thanks for the updates.

Interesting that your fan control worked @mtowara - I wonder what is different for me there. I am using the pip3 package... although I tried just the standard pip package too without much luck. I also couldn't get it installed from this repo on buster lite, Pi 4.

[scottsweb]

For those following this issue you can now install the beta of RPi.GPIO:

pip3 install --upgrade --pre rpi.gpio

Unfortuantely it doesn't solve my particular issue which seems to be a lack of connection being made by the push fit header and pin 12.

[wildestpixel]

The beta of rpi.GPIO fixes this for me on 2 Pi 4’s

[thallada]

I have the beta installed but the fan still never powers down.