Oregon L5 Society
Long the bane of presentations and guest speakers, the lack of a viable overhead projector has quite often resulted in frustration and over-visualization. Presenters were often relegated to the task of presenting highly technical subject matter in a method not unlike our ancient ancestors did, only without the benefit of a roaring campfire. OL5's current overhead, suffers from two major draw backs: An inefficient projector system employing a "reflection" technique that left images looking bland and washed out, and the fact that a proprietary projection lamp was utilized. Replacement of same being a chore, both logistically as well as financially.
The best bulb candidate seemed to be a 150 watt quartz halogen, (right), readily available in hardware stores for use as outdoor illumination. In fact, a motion-detection weather proof version had been purchased several years back at the Goodwill. With some minor screw-twisting, it relinquished its socket, which was transplanted into the overhead's lamp assembly. Once fitted and turned on, the unit performed flawlessly, projecting a sample view graph with clarity and brightness. Better still, replacement bulbs are easily available in most hardware stores for under $5.00. We now have a working overhead projector, to join the ranks of OL5 presentation aids.
R. D. "Gus" Frederick, aside from serving as OL5's Webmaster and MIST Chair, is a well seasoned technological "hunter-gatherer." Through a policy of vigilance and modification, he continues to scour second hand stores and yard sales for viable used technology, that can be used whole or in part for a wide range of projects and purposes.