Does it have a serial output cover Eric?
Most of the cheap clones have this.
A few people have reverse engineered the weird non-standard
serial stream that it feeds out and tried to have a CNC style PC
link.
If you can do that then you've got yourself the working parts
to a digital focuser readout
my model hacked by someone here:
http://hackedgadgets.com/2008/10/10/...ial-interface/
Here's a pic of the cheapie I use on my lathe.
This has a dust cover at the top right of the casing for
serial out.
Steve