Tried a first run today of the mostly assembled project.
Two issues showed up.
First, the yaw axis is very jerky. I need to find a better way to turn it on the axis. It's doing too much balancing on the small shaft.
Second, about 1/3rd of the way through the scan the LM7805CV overheated. I need to see about adding a heat sink onto that. Otherwise I'll have to re-design the 5V side of the project (medium). Or lower the 18V side of the project to 12V (easy)