[Dan Oelke]

Thanks Joe - that helps!

Yeah - figuring 1024 steps on say 300 degrees worth of turn would give about 1/3 of a degree per bit. Not bad - I would like a little better - mostly because I know we will be looking at the angle of our launcher which can be constrained to probably only 30 degrees worth of movement. Hmmmm - maybe there is a linear pot with much less turn ..... time to do some searching.

Any other ideas for mounting? I ask because we won't be using a motor to directly drive the ramp angle so we won't have a motor shaft to lock onto. I think I can see a way to do it, using a stiff wire to go between the arm and thru a hole/slot on the pot arm. But seeing something that has worked for someone else would be cool.