I'm in the process of building one of the K3NG-based smart keyers, in this case an Arduino Nano version using the $8 PC board from N7XG.net.
Just wondering if anyone has built one, and what kind of experience you had with it. The build seems pretty straightforward & simple - just stuff a board, configure / build / upload the code and put it all in a box with jacks & controls.. and maybe a screen.
So who's done one?