I looked at the link to the plans, etc. and it seems to be a very professional looking piece of work. However, for the time, money and work involved, one could purchase a camera that records stills and video and with controls easily reached. Here is a link to this camera, which I've seen for as low as $112 bucks. Its a Hero III, a wearable camera for your wrist (not easily lost). Here is the info, it won't let me copy/past the URL link.
Info:
Dubbed the Wrist HERO, the Digital HERO 5 is a 5 megapixel wrist camera for sports.
Waterproof to 100 feet (30 meters) and capable of shooting 56 minutes of video (with sound) and 5 megapixel still photos, the Digital HERO 5 "Wrist HERO" is the world's most convenient solution to shooting on the go footage of your friends and family during your favorite activitiesÍÃe it on the mountain or in the water.
Originally designed for surfing in big wave haven, Northern California, the Digital HERO 5 is engineered for maximum convenience as well as maximum durability. Perfect for surfing or snorkeling, hiking or climbing, the Digital HERO 5 makes it easy to have a camera at hand for video and photo opportunities that occur at times when traditional cameras are too inconvenient to use or carry. No pockets? No problem if you are wearing the Digital HERO 5 "Wrist HERO" camera.
Thanks to its patented design, the Digital HERO 5 can be worn securely flat on the wrist during your sport but can quickly pivot upright for aiming the shot. Even in this upright position, the camera is securely attached to your wrist. This makes it easy to grab your surfboard, paddle, or otherwise have both hands free without risk of dropping your camera. The housing is waterproof to 100 feet/30 meters.
The camera can also be strapped to gear such as kayak paddles and the leading edge of kitesurfing kites. This allows the kitesurfer to film their entire session looking down from above, as though they had a private helicopter camera crew following them while they surf.
The Digital HERO 5 can be combined with the Helmet HERO Expansion Kit and Motorsports HERO Expansion Kit in order to mount the Digital HERO 5 to helmets, bikes, and other gear.
The Digital HERO 5 has an adjustable neoprene strap that adjusts to fit a range of sizes from a child's wrist to fitting over the ski jacket sleeve of an adult.
What's Included:
5 Megapixel HERO Wide Camera with Standard 54º Lens
1 Shockproof/Waterproof Quick-Release Housing?00 feet/30 meters
1 Neoprene and Velcro® Wrist Strap (One Size Fits All)
1 USB/RCA Combo Cable
Warranty: One Year
Specs:
Model Number: GDH50
Resolution: 5 megapixel (2592x1944) photo, 512x384 video
Sensor: CMOS
Video Format: MJPEG, 30 fps, saved as .AVI file
Optics: glass lens, f/2.8 aperture, 54º angle of view
Modes: video, standard photo, photo every 2 or 5 secs, 3x photo burst sequence, self timer, upside down photo/video flip
Exposure Control: auto
White Balance: auto
Self Timer: 10 seconds
Microphone: built-in with adjustable recording/input level
Audio Format: 8kHz, mono
Memory: 16 MB internal, expandable to 2GB with SD card (not included), expandable to 4GB with SDHC card (not included) via free software download from GoPro websiteÍÂvailable soon
Capacity: 56 minutes video (incl. audio) or 1,945 photos with optional 2GB SD card. 1hr 52min video (incl. audio) with optional 4GB SDHC cardÍÂvailable soon
Power: 2x AAA batteries (not included), lithium batteries highly recommended. 3hrs. video recording with lithium, 2hrs. with NiMH
TV Out (with RCA cable): NTSC or PAL
PC Connection: USB + RCA combo cable
PC Compatibility: Windows ME, 2000, XP, and Vista; Mac OS X 10.2 and later
Waterproof: rated to 100 feet/30 meters
Dimensions: 1.75" x 2.30" x 1.25"/4.45cm x 5.84cm x 3.18cm (H x W x D)
Weight: 4.9 oz/139 g