SORRY about this one. Just tested unit before a sale and it was found to be missing several LED elements and seems not to find the two sensors properly. Worked fine just a couple months ago!
If you want to try and fix it, make me an offer!
NGC-miniMax from Jim's Mobile for sale. Includes mini-Max computer and connections cables, and two small package optical sensors with 4096 tics per revolution accuracy. I will also include two universal joints I had made at local machine shop for connecting the sensors to shafts that aren't perfectly aligned. This is not a system made for a specific telescope type but rather for the do-it-yourselfer.