How to Make a Time Lapse Video With Your DSLR

"one of our members Chrismar [...] put together a great tutorial on how he created a time lapse photo video using his Canon Digital Rebel XT dSLR and TI-83 calculator as his intervalometer."

http://digital-photography-school.com/blog/how-to-make-a-time-lapse-video-with-your-dslr/