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Rob writes -
Canon makes a SLR camera remote timer that sells for a couple hundred dollars. Using inspiration from various web sites I built one for myself using about $15 worth of parts from RadioShack.HOW TO - Make a remote timer for a Canon SLR (Using a 555 timer) - Link.First, it is a simple wired camera remote control. Just plug the cable into the remote jack on the Canon SLR camera and the black button on top will trigger the camera auto focus, while the red button will focus then take a picture.
Second, it is a timer than can be used for time lapse photography. A 9-volt source (battery or DC adapter) powers a circuit I built using a 555 timer and a 6-way rotary switch where each way is hooked up to different resistors. Switching between these different resistors varies the timer interval. The timer triggers a relay switch at specified intervals which causes the camera to take pictures.
Related:
555 timer - five boro bike tour time lapse - Link.
555 chips? Bet you can't eat just one - Link.
555 timer origami - Link.
More 555 timer projects - Link.
Make - Volume 10 - The Biggest Little Chip (Page 62) - Link.
I have a similar project on my site (PeculiarLabs) although it relies on software for the timing rather than a 555. Quite a few more features are also available through the software for Canon dSLR cameras.
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