I noticed that the foot-switch and toggle button do not have pull-up resistors and that the code you published does not enable the built-in ones on the Atmel chip. How does this work?
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yesterday night I was changing all the codes in my PC, today I will test them with the guitar and I hope that tomorrow I will update all to the website with some tutorial to include all the codes in the Arduino SDK to load them easily with one click.
The updated codes, that include the pull-up configuration for the toggle and footswitch are now available in the
How to start programming pedalSHIELD topic.
You can download the rar file
here
as well.