That finished look for your project is all about the enclosure you find to host it. We think [Punge] really did a great job with the case for this DIY intervalometer. The build section of the project page links to the company that makes the enclosures. They’re meant to host round PCBs with several options for button configuration. Combine this with enough space for a coin cell and you’ve got a great looking custom device.
The intervalometer itself is much like others we’ve seen. It uses an audio-jack connector to control the camera. You have the option of using a three or four contact version depending on what your camera supports. The PIC 12F683 uses an optocoupler with a built-in transistor to do the switching. A single button seen at nine o’clock on the board above is all it takes to start the device off. Press and hold once to wake it up, then wait for your desired interval and press the button again to start the timed shots.
You’ll notice that there is no programming head in this design. A separate board was etched to attach the PicKit, with the surface mount chip just held in place during programming.