My ship has limited power. So I am creating three bus paths: Ground, 5V, and 3.3V. It will also help with the limited amount of wire I have. It is important to not have ground loops. Ground loop is an unwanted electric current path in a circuit resulting in stray signals or interference, occurring, e.g., when two earthed points in the same circuit have different potentials. The 9V-1A power supplies share the same ground. If you follow each ground path, they end without connecting back. I made sure both sides of each bread board are grounded
I will keep 5V and 3.3V isolated on the control boards. Still need to connect up the 3.3V. I will also not to create loops. Ground loops are very bad.
I was able to find a few SN74HC595N shift registers to connect the lighting up with. This saves on wire and ports of the controllers. I added 8 position dip switches and SIPO and PISO shift registers to this project.