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October 26th, 2009
DIY Projector Screen
Stretched and Painted Fabric
10'x6' = 11.5' Diagonal
4/5 Hours 1st Build Day
3/4 Hours 2nd Build (Paint) Day
Framing Parts = ~$70
Fabric = ~$40
TOTAL COST = ~$110.00
This Boardroom has a high ceiling but low hanging lights. We installed a projector to hang just below the light fixtures and a screen with extra fabric drop at the top to compensate for the high ceiling.
Prototype of my Projector Controller. Based around a PICAXE 18X micro. The crappy DYNEX USB to serial converter that I am using does not put out a nice clean RS232 signal. So, the SP3232 chip on the left is handling the cleanup of both the programming interface (along with the Hex Inverter on the Right) and the second output (pin 6) of the PICAXE. PIN 7 goes high to red led to signal an output. The resistor array on the bottom right is an ADC keypad simulator. (http://www.lancer3.com/ADC%20Keypad.htm).
Part of a British Livens projector battery destroyed by German artillery as it was being emplaced.
Note the circular base plate, which was buried in the ground beneath the tube.
Peering down the barrel of one of the projectors (actually, this one was a bit ill by the end of the session)...the colours were decidedly muted...Still, better than trying to lug a 2 meter x 2 meter TV around... ;)
Vector artwork of a Projector Screen
This artwork can be purchased at graphicriver.net/user/mberggr/portfolio
Website portfolio www.markrberggren.com/Portfolio_new.html
A photography series wherein I investigated the role of the camera as documenter. Were the projected slides of people any less real than my sitter?
I have since discarded this series based on the cliche of projected images.
Dirty Projectors
20 october 2012
AB Brussels
photo: Alex Vanhee
Dirty Projectors are an American rock band, consisting of David Longstreth (vocals, guitar, musical direction; born December 17, 1981), Amber Coffman (vocals, guitar), Haley Dekle (vocals), Nat Baldwin (bass), Olga Bell (vocals, keyboards), and Michael Johnson (drums).
Working on a prototype for a projection installation. This is an early mock up projected onto my bedroom wall.
Edison home Kinetoscope for home movies 1912 using three rows of images on a 22mm wide film. Films were available for rent.
Apparently - I am a Kodak Junkie too! I was supposed to help Dad find more room in the barn - but could not recommend he let go of these gems - we sent two to the recycling department - and kept three - the keepers all work!
This projector lamp fits in Sanyo and Christie Projectors. The Sanyo models are PLC-XF42, PLC-XF45, and PLC-UF15. The Christie models are LU77, and LX100. Source: www.topbulb.com/sanyo-plc-xf42-plc-xf45-plc-uf15-christie...
In motion picture theater the film is actually placed on a "platter" system as opposed to a big, vertical reel (like a home 8mm film projector might use).
The film is open and exposed to the environment of the booth - so it's important it's treated carefully and conditions are controlled.
The platters spin and a center set of rollers and attenuaters control the speed of rotation as the film is pulled through the rollers, across open space to a set of rollers on a center-column, across more open space to the projector itself.
The projector runs the 35mm film at 32 frames per second through a series of intricate rollers and guides - then back to the platter system where it's rolled up onto another platter.
When it's time for that movie to run again - THAT platter becomes the feed for the movie - and the whole process is reversed - alternating feed and take-up platters.
We also have a third-platter on every projector which allows us to do "double features" in each theater house. Two different films will occupy two of the platters while one remains free for takeup. A careful system of feed/takeup alternations allow one projector to rotate through two movies all day long and never have to remove the film from the system.