paul- wrote: 
> Hmm,  anyway to replace the mechanical button mechanism with standard
> push buttons?
For this project, I really want to preserve the outside and interface of
the old radio. While this means in principle keeping the non-momentary
original switches (buttons), you make we wonder if there is an indirect
way to have the non-momentary switches activate a second set of
momentary switches on their way to the GPIO pins, maybe through a time
delay circuit or relay? I’ll have to do some reading. 

On the software side, I wonder if I could modify the code that monitors
the pins to register a button push if a connection is made via my
non-momentary button. It could fire after a fixed time delay if the
signal is maintained on specified pin. After a longer delay, if there
was no further activity, the pin could be reset so it’s not left
floating. Any thoughts on which portion of the source code I would need
to look at?

Alternatively, maybe I could take the idea of a delay / second button
and execute it in software. Maybe a script that reacts to a change on
pin 1, triggered by my mechanical non-momentary switch, and then
momentarily flips a second pin on and off on the Pi, which sbpd could
interpret as a button push? 

I’ll try and work through a few possibilities and share any results.


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