During the first ModuKey build, on which this blog is being written, the IO expander ICs needed significant work once they were soldered in place. This was probably due to the way they were soldered, one pin at a time with a fine-tip iron. Eight to twelve pins of the 48 total needed to have solder joints repaired so the keys would work. For this reason, the code still outputs serial data about which key is being pressed or released. A rare and wonderful thing happened with this build, all the IO pins worked correctly on the first test. Let this be a lesson to use solder paste and a hot-air station when doing this kind of work if possible.
Testing an IO point which changes the LED color
ModuKey on GitHub
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
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