Hi all,
As Richard said, I had a crazy idea to hack together an "heads-up display." I looked around the internet, and found several wearable units ranging from $400 to $4000. I was able to find the "Eyetop" sunglasses on eBay for around $250. I removed the sunglasses from the video unit and permanently attached it to a new set of Sony MDR-7506 headphones (so much for the warranty!)
Finding a video receiver turned out to be harder than I expected. I wanted something which was portable, and could retain preset channels so I could jump between cameras quickly. I had no luck finding anything which ran on DC until I stumbled onto the Game Boy Advance TV Tuner, made by a 3rd party in Japan.
The unit bolts onto the back of a GBA, and uses the GBA as the "brains" to select channels, store them, and send them out to the monitor via an AV IN/OUT port (which annoyingly must be reset every time I power up the unit.) The tuner and video feed unit live in a small backpack which I sling over my shoulder.
The Tuner is a battery hog, so I fabricated some external "block batteries" from some 6v cordless nail gun batts I found at Home Depot. Interestingly, the tuner is designed to work with 4.5v, but I took a chance that 6v was close enough, and sure enough I plugged it in and it works, and hasn't blown up yet after about 3 weeks of use.
The picture is OK, certainly good enough to see the frameline. On very wide shots where the boom has a dark background, it does become difficult to see, even with tape on the end of the windscreen. But overall I am very happy with the performance and convenience. All told, I have spent around $600 for the entire system.
Two things I would like to change on the system:
1. The tuner can be a little finicky, and is a little large. If anyone has ideas about a small, easily tunable NTSC receiver with video output, please let me know.
2. Because of the size of the GameBoy Tuner with the battery and video brains, I have to wear a small backpack, which is comfortable but can be a problem in tight situations. Again, this is a prototype, and in that sense, is very successful.
I have taken my first steps into the Singularity!
If you have any questions, post them here or email me at jeffsoundman@yahoo.com
-Jeff Erdmann