Monday, March 03, 2014
Motorizing the DEC slow motion control
This is a video of the first integration test by using a rather soft metal plate to fix the motor in place.
I've used it with a telescope this morning at different voltage level. The view through the eyepiece shows that, at 12V DC input, the slewing was responsive and no backlash could be observed at 24x but the slewing speed could be a bit too fast. By going down to 7.4V, backlash is more observable but still very acceptable, the slewing was far slower for fine tuning. In fact, it could be even slower at higher magnifications. I guess I will settle down with a 9V (actually a 7.4V Lithium battery in the form of 9V 6F22. Therefore, I shall get a box which allows me to mount two buttons plus the 9V battery inside, maybe a small variable resistor.