[PROBLEM] GPIO debounce not working

[Jewa_TWN]

I don't disagree however I'm not the dev responsible for the GPIO class library used in moOde's GPIO Buttons module. You would need to contact the maintainer of RPi.GPIO https://pypi.org/project/RPi.GPIO/

The script used in moOde is located in the directory below
/var/www/command/gpio-buttons.py

-Tim

Tnx,

Send the request / feedback to the maintainer of the RPI.GPIO
Once I got feedback, I will post it here.

For the meantime to "solve" my issue, i will invert the signal:
I will use a N-FET to have the GPIO at 0V (solid!!) when the supply is ok.
(The FET will five me a few milli-ohm connection, iso a 2K pull up)


This should reduce the EMI influence. Its not good, but should work.
Most likely after the weekend.

Regards,
Jeroen

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Update after the above:

NO reply from the GPIO maintainer yet : a pity..

Hardware changes:
Added a extra FET, to invert the signal:
The solid N-FET  + 330nF cap between Drain & 0V (0V when supply OK, 3V3 when about to shutdown) helps, but sensitivity is still there for touching the enclosure.
(Due to ESD discharge, as im walking on slippers indoor :-))

Next option is to solder a cap directly on the PI, not really preferred..

Keep you posted.
J