2019-12-29 (Su) MIDIGlocken

At the top of the faceplate, I had two buttons. One was a single-player button, and one was a two-player version. They were intended to switch between modes which provided accompaniment or not. Unfortunately, I could not get the single-player button to work at all.

I wrote a test program to monitor the inputs, but it showed that the button refused to switch states. I reflowed the solder to make sure it wasn't a bad connection. Finally, I tried looking at the analog value and found that it was a messy state indeed. Both of the buttons were giving each other cross-talk, and even with the built-in pull-up resistors, one could drive the other low. Perhaps I could have fixed this with physical resistors, but the incoming data was reliable, even if it was a mess.

A sort of debouncing algorithm smoothed out the data by ensuring that each input was held low for a certain number of program cycles before it would be recognized. This worked well, and the buttons lost all of their erratic behavior and operated exactly like I would expect. Additionally, this code will not interfere with another piece of hardware that is working correctly.
Reliably bad switch readings

The rest of the posts for this project have been arranged by date.
First time here?

Completed projects from year 1
Completed projects from year 2
Completed projects from year 3
Completed projects from year 4
Completed projects from year 5
Completed projects from year 6

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