At 09:29 PM 3/14/00 , Daniel Grace wrote:
>>I feel horrible mailing the list so much, but from
>>what can photodiodes be salvaged from?
>
>Lessee... the Remote detection modules from VCR's and TV's comes to mind.
>Anything you point a remote control at will most likely have a photodiode
>as the central receiving element.
>
>Garage door interrupter beam receivers? (Guessing - may use photoresistors)
>
>1/2 of a photointerrupter pair, which is a little "U" shaped module that
>has an emitter on one side, and a receiver on the other (which may also be
>a phototransistor). Snip it in two and use the receiver. Not sure which is
>which? Apply a limited amount of power through it and view it with your
>camcorder. The emitter will light up like a flashlight bulb (camcorders are
>sensitive to IR). Almost anything electronic will have these. VCR's will
>have at least 3 or 4. Camcorders too ;>.
>
>Regards,
>Dave
>
>---------------------------------------------------------------
>"Um, no - that's H,R,Y,N,K,I,W. No, not K,I,U,U, K,I,_W_. Yes,
>that's right. Yes, I know it looks like "HOCKYRINK." Yup, only
> 2 vowels. Pronounciation? _SMITH_".
> http://www.solarbotics.com" target="_top" >http://www.solarbotics.com
Maybe I am in luck then, because I just ripped apart my vcr, lol. actually it was broken, so I disassembled it, and I found two motors. I am waiting for my solder vacuum to arrive in the mail, but for now it is in a dozen pieces ;). upon further investigation, I found that there was a large metal thing sticking out of it near the power source(and the biggest cap youve ever seen!). I was thinking that this metal thing recieves the remote signal, as there was something similar in my rc car, but I will search further. And I am not quite sure about checking a tv, seeing as they contain enough voltage in the tube to put you out for good.
a side note, does everyone else also see the html in the messages I reply to?
11875 Tue, 14 Mar 2000 21:28:54 -0800 Re: Minit motors beam@corp.sgi.com owner-beam@sgiblab.sgi.com [mailto:owner-beam@sgiblab.sgi.com]On
>These are LEGO parts? Are they in the standard catalogs?
There are two catalogues (though often you get both - one attached
inside the other). The normal catalogue is of the year's lego sets, the
second one is the "Lego Service" catalogue, and this is of the
individual parts that you can mail-order, or buy from Lego "superstores"
(a lego retailer that stocks these supplement bags :). These
"supplementary LEGO element packets" are important lego parts but are
useless in themselves (ie their purpose is replacement parts if your kid
loses a crucial part of their lego set), and the catalogue is
international (the one I have has the prices in 17 different countries,
and mail-order details for same. Canada and the USA are not among them,
so they'll have their own catalogue).
> >I'm looking into it, and believe it or not, some of the best looking
> >stuff I've seen is some lego parts. Lego isn't cheap, but it's an
> >unlimited supply of parts that are available for ever and ever. Unlike
> >certain excellent gearmotors we could name :-)
> >
> >Part 5119 - ultra miniature gearmotors (not much more than 1x1x1cm).
> >Never used them, but someone on the list played with some a while back
> >and was quite impressed with the efficiency. NZ$30 each (approx US$16)
> >Part 5278 - chain links x35 (ie miniature caterpillar tracks, about 5mm
> >wide) very close to that MIT "Ant" look.. NZ$9.50 (approx US$5). You
> >might need two sets if your tracks are long.
> >Part 5229 - Assorted gears that mesh with the above tracks. Add a paper
> >hubcap, spray-paint them silver or black, and no-one will ever know
> >you're using lego :-) Additional bonus - they slot right onto the
> >gearmotors. NZ$11.50 (approx US$6)
> >
> >Costly, but I figure this is more than offset by the construction hours
> >saved. (And that MIT "Ant" look is pretty cool :-)
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