Technical_Insanity at Yahoo! Groups

Re: Designing a radio receiver circuit?

hauserj@... — Sun, 15 Nov 2009 23:57:22 GMT

I use these on my props. Very small (< 2"), TTL output. Been buying from this vendor on ebay. http://www.e-madeinchn.com/RM6SG.pdf I use them with the Prop-1

OT: Question about MSIs

Vern Graner — Fri, 13 Nov 2009 17:45:43 GMT

Sorry to be this far afield, but I was hoping someone here might have some experience they could share. Summary: A guy at my company got laid off and the

Re: Designing a radio receiver circuit?

doc — Tue, 10 Nov 2009 15:12:33 GMT

Try Spehro Pefhany at: speff@... Web site http://www.trexon.com/ He's busy with a major full time contract righ now but might be able to do something

Re: Designing a radio receiver circuit?

Barry Schieferstein — Tue, 10 Nov 2009 10:28:14 GMT

Mike, I would think that it would probably be fairly easy to find a few dozen such units already on the market. If I were designing a new product I probably

Re: Words with lasers?

coffinbound1 — Tue, 10 Nov 2009 02:15:39 GMT

Just thought I would post this for any that might have been following the thread. It is another one of those lissajous generators. Pretty cool seeing how the

Designing a radio receiver circuit?

Michael Cunningham — Mon, 09 Nov 2009 03:53:34 GMT

Not really halloween related but definitly technical:) Does anyone on the list have the skills to or know anyone who can design a small (very small - think

Re: Words with lasers?

lex_allen99 — Sun, 08 Nov 2009 19:06:51 GMT

Yep that's it. there was a RPM sensor that told the pic the speed and home position. This raster is modulated by turning on/off the laser beam. T

Re: Words with lasers?

dbell@... — Sun, 08 Nov 2009 17:19:09 GMT

To answer both latest posts, I suggested two cylindrical lenses in order to get an expander that would form a beam with a rectangular cross-section, rather

Re: Words with lasers?

David Petrone — Sun, 08 Nov 2009 05:12:21 GMT

If you are just trying to illuminate a static pattern, you could start with a laser level that projects a line. They a single mirror that moves back and forth

Re: Words with lasers?

Doktor Calamari — Sun, 08 Nov 2009 04:39:48 GMT

Well... A cylinder is curved along one axis, so you could curve the glass along both axes... which would result in an ordinary convex lens. I'm not sure that

Re: Words with lasers?

coffinbound1 — Sun, 08 Nov 2009 03:25:23 GMT

I understood everything up to this post. Not sure what you mean by "two cylindrical lenses". I know what a cylinder is, just can't visualize how you have them

Re: Words with lasers?

David Bell — Sun, 08 Nov 2009 01:58:22 GMT

Ah!! I'm sure you have it with 8 differently angled mirrors. Again, why not two croosed cylinderical lenses? You'd get the rectangular beam pattern, without

Re: Words with lasers?

Doktor Calamari — Sun, 08 Nov 2009 01:03:33 GMT

... "The head is an octagonal prism, with a small mirror on each lateral face. Each mirror is mounted with different angles, giving different reflection angles

Re: Words with lasers?

coffinbound1 — Sun, 08 Nov 2009 00:01:15 GMT

You wouldn't by any chance have a link for what you speak of, would you?

Re: Words with lasers?

coffinbound1 — Sun, 08 Nov 2009 00:00:10 GMT

OK David, that is just too cool! Thanks for the link.