> http://www.panomc.com/ > > -Steve Thanks for sharing One note on the Source Code paragraph. I don't believe any PIC's internal oscillator is stable enough, wrt to V and T, for comms. The time spent quantifying IntRC for a particular device would be better spent on a trip to the crystal shop I had the idea a few days ago to make a panoramic head. As often happens, it wasn't a novel idea. The first one I saw was this http://www.gigapan.org/ Had a bit of a Google around and found most were similar. Some more robust but all had the same basic functions Here's where I'm to up with mine http://home.clear.net.nz/pages/joecolquitt/pan_tilt_sm.jpg The s/w (18F4550) is all but done. Basic functions up front plus more complex ones accessed through a menu, plus remote control over-ride for both the motors and shutter control. Hopefully today I'll be having a look at the actual mechanics and start putting some metal together. I chose to drive the axes with 40:1 reduction worm drives, which in theory gives 0.045 degree resolution with 200-step motors, plus the advantage of being able to use smaller motors -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist