Vermes
Advanced Member level 4
Components used:
- Monitor TFT5015 Comaq – 300:1 contrast, 15” - 1024x768, anti-reflective coating removed
- Fresnels: 330 and 220
- Link lens
- Box of waterproof plywood, 6mm thick
- Ventilators, one derived from a photocopying machine, other from a computer and Xbox 360
- Reflector from a car lamp
- Wires, cables, electrical components, grills, etc.
Box:
Mounting the fresnels and matrix to the frame:
The first fresnel was screwed into the frame, the matrix attached with plastic handles (from a mirrors) to the frame. The second fresnel lies on the pads, twisted with nuts, it holds on tight. The whole is in a single optical line. Distance from the elements is 15mm.
Cooling circuit diagram:
Prototype version:
Final version:
Front panel. The button powering the whole, button switching the lamp and upper ventilator, button switching the matrix, button of auto settings of the matrix, VGA input.
Inside from the lens side:
Grilles:
Inside - the lamp:
During the assembling:
Electrics and the lamp. A tiny transformer power the ventilator from the console. The ventilator is connected to the lamp circuit. When the lamp is switched on, it forces the air between the frames, cooling the matrix. When the lamp is off, the ventilator is also off. Only the main fans are on – the large on from the side of the lamp, from the lens side. Elements likely to be under tension, were secured with protective conductors.
The whole:
Image:
The biggest – 100 inches:
And the last photos:
250W lamp is enough even for 120 inches screen. The whole is connected to Xbox 360 homebrew, with Unitra stereo mildton 80 or PC.
Link to original thread (useful attachment) – Mój projektor multimedialny za niewielką kwotę