https://github.com/markprocess/nim-ultibo-rpi
This version is for ease-of-use for nim programmers. Ultibo does not need to be installed. The main ultibo program provides just the wrappers that are needed for the nim program. When more ultibo features are needed, an ultibo programmer needs to update the main ultibo program and commit the generated assembly code. There are led and clock wrappers. Respond if you wish to see more features. I will be adding bluetooth low energy advertise and scan this week. Mark.