BUYING: Single color low-ish projector with reasonably wide/accurate scanners

[Wondergy]

I'm planning to teach about sound waves, so I want to show about a thousand kids an oscilloscope and spectrum analyzer. What better way to accomplish this than with a laser?

I've already got the prototype working, using an old 100mW green projector put together by the late Daniel Cohn of Techological Artisans. Now I need a few (for backup), tiny, reliable projectors just like this one, so I can take this from school to school.

My ideal specs would be:
Wide angle 25-30k scanners - I'm currently using Catweazle scanners which have been great
Narrow green beam, maybe 100-500mW.
Tiny, portable
Either reliable or super cheap so I can buy a couple of backups
Ideally it should have x/y gain & offset dials like my current projector, but I can do that in circuitry before the ILDA connector if necessary.

I'll bet someone on here has one or two old projectors in need of a good home. Or do you know of a good source of something inexpensive like this?

[dsli_jon]

Hi WndrG -

...Or do you know of a good source...

Actually, there's a couple resources.. We've got one of-such (different model..) sitting on a test-bench that could do the job; and, there's another good Gent, out this way, that has a nice, small unit with a good-green, and a pair of 6800s in it, etc.. But..

..I'll probably best-serve you by recommending you get in touch with John L, 'VJ AIWAZ' here on PL, as he 'took over' Daniel's TAI legacy, and would likely be in the best-position to get you as close as possible to the same unit. John's a good Kat and will take good care of ya.. He can also assist you if you might need Variance-prep assistance...

Cool-sounding project!
cheers..
j

[VJ AIWAZ]

thanks Jon

and yes i can help you get this sorted for you wondergy

just give me a call at the office taiserver.com (phone number is on the top of the page)


thanks
John