More pictures will be added when the assembly is completed. The Azimuth and Elevation assemblies are identical. There are limit switches to stop motor drive.
+24 VDC (200 ma) must be applied to the brake to allow the motor to drive. The gear motor needs 300 ma approximately at 12 VDC.
A schematic of the drive electronics will be posted shortly.
The completed machanical assembly with a 1k 10 turn 0.25% linearity pot installed
The two halves are press fit together makes removeable difficult.
The top was machined to allow a sliding mount to make it adjustable. It was way too critical to mount the pot without the adjustability.
The pot is driven using a gear from a spare motor. It is mounted in the same place as the motro but on the otherside of the plate.
The inner bearing surface was opened up a few thousanths to eliminate the "press-fit" making it much easier to re-assemble