We’ve seen DSLR photo booth projects before, but usually they’re just simple ways for guests at an event to take self-portraits of themselves. Kevin over at I Dream In Code actually made a fancy photo booth for his brother’s wedding that prints out a nice keepsake for guests:
It is an Arduino connected to a Staples easy button. When pressed, it starts the sequence of taking 4 pictures on the Canon T3i, triggered through the 2.5mm earphone jack.
The pictures are wirelessly transferred over an adhoc network using an EyeFi Pro SD card. On the laptop, it is looking in a directory for 4 pictures, takes the 4 of them, combines them into one photo along with a picture of Andrew and Jenn, and prints it out.
The entire process from pressing the Easy Button to having the photo pop out takes about 1 minute and 30 seconds. Check out his blog post for more of the technical details.