Thanks for creating this project.
After I received my Ham License I wanted to start learning CW, but using a straight key has been a challenge.
I found this project inspiring and I think I now have a better platform for learning CW. I can focus on listening to the code rather than my technique.
If it helps, I copied your schematic over to KiCad and etched a board for it.
I am attaching a zip folder of the files should someone else want to use them. I did use the MSP430G2211.
IambicKeyer.zip