There are tons of situations in which having a remote shutter switch on your camera would be incredibly useful: wildlife photography, photographing yourself from a distance, aerial photography, haunted house photography, a photobooth — you get the idea. Unfortunately, while most DSLRs make it really easy to use a remote shutter switch, others (and most point and shoots) don’t come with a port to plug the switch into.
Luckily, some folks from MAKE have put together a simple video that shows, step by step, two different ways to add a remote shutter switch to your camera. It’s actually really easy.
You can see the whole thing here, but the gist of it is this:
If your camera has a shutter switch terminal, then you can directly control the focus and shutter with an external circuit such as a microcontroller. If your camera doesn’t have a shutter switch terminal, then you can either add connections to the shutter button or you can use a servo to press the button for you.
Be sure to show us your photos if you decide to give it a go!