I've been busy with my other 1K challenge entry, and haven't had much time to get back to work on the 1Keyer. It's been somewhat hampered by the fact that I was missing some hardware from my iambic key. I looked up the documentation for it, and it said I needed a pair of 4-40 9/16" cap screws. I ended up having to order them from McMaster-Carr. But annoyingly, these screws seem to be a bit short. I suspect that 11/16" are actually appropriate. Not sure I'll get any new ones before the 5th deadline.

So, instead I soldered some leads on a pair of push button switches and used them for debugging. They were sufficient to allow me to test the code, and after a few tweaks, it appears that all is working as designed. Trying to send letters via these two buttons is a bit error prone though, and I'm not sure that the state machine handles delays between characters in the most intuitive way.

I'll try to demonstrate the functionality in a YouTube video in the next day or two.