The hardware portion can be used on most any controller. Even the software side had some helpful information. Just wanted to point out that you can get some insight from other chips. You can't expect to find what you want for a specific chip or language, but you can get the general idea from similar projects, regardless.
I've been wanting to do a pan/tilt project for a while, but it's a little beyond my assembler skills still, but getting there. Just started with a free version of a BASIC compiler. Took a while to figure out how to get a simple LED flash program to the chip, but got it eventually. Hoping it will take care of most of the timing details that have been giving me trouble.
Back to the thread...
Do you have the mechanical portion worked out? I sketched out an idea using some PVC pipe I have littering my yard. Was a little concerned about weight at the time, but I was going to use stepper motors back then. After playing with some servos, found they are surprisingly strong for the size. I could probably still use the pipe I have, but servos could reduce size to less than half. PVC is cheap, so will probably redo the design. Mine are intended for outdoors, so need to keep water out. Another bonus of servos, they are pretty well sealed, though probably not waterproof or submersable.
Keep us up to date, post some pictures. I'll do the same when I get started on mine. Have to get a better handle on BASIC first, its been a while.