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Mark Hoekstra has passed away

UPDATE: His personal site has been updated.

It was with great sadness that we learned of [Mark Hoekstra]‘s death this morning. Earlier this week, the 34 year old hacker suffered a heart attack while riding his bicycle and was admitted to the hospital in a coma. [Markie] has been a Hack a Day commenter for much of our existence and a project contributor for nearly as long. It started simply with things like his bright green Hack a Day iPod sock and a hand crank iPod charger. He did an excellent job documenting his projects; many people had built IR cameras, but none were nearly as thorough as him. He also enjoyed sharing his love for obsolete hardware with the community. He built a wireless eMate, turned two Mac SE/30′s into audio viualizers, and wired shutter glasses to an old SGI.

It was always a treat to hear about [Mark]‘s latest project and he’ll be missed greatly.

[photo: Bram Belloni]

3D glasses for an SGI


[Mark Hoekstra] is a true SGI enthusiast, and he proves it with these 3D glasses for an SGI. Taking advantage of the SGI’s stereo viewport, [Hoekstra] created a controller for a pair of CrystalEyes glasses that would allow them to be used with the SGI.

[Hoekstra] used the schematic from [M.C.D. Roos]‘s similar project, which used old Asus 3D VR glasses. This project can theoretically be done with any LCD-shutter glasses, the only important thing to know is the maximum shutter voltage the glasses will take. [Hoekstra] felt his way through building the board by common sense alone and somehow managed to avoid any shorts. The board only makes three connections to the glasses: an out to the left lens, one to the right, and a ground wire. After building the controller board out of an LM324 chip and a customized segment of perf board, he learned that he needed a monitor capable of displaying a relatively high bit depth at 100Hz, or 50Hz per eye. He tested the glasses with a game called Hacknoid after making a few last minute changes on the board (forgot the ground fuse), and he was soon making himself dizzy with his functioning 3D glasses.