Alt-BEAM Archive
Message #13516
To: "'beam@sgiblab.sgi.com'" beam@sgiblab.sgi.com
From: Wilf Rigter wilf.rigter@powertech.bc.ca
Date: Sun, 16 Apr 2000 16:47:18 -0700
Subject: RE: PIR detectors
Sure thing Bruce!
I'll fire up my old PIR to logic hack, check it out and post the schematics
etc. I used the detector by itself with additional parts but if you don't
mind using the whole assembly then some cuts and a jumpers can be used to
bring out a "dry" contact for control or indication.
wilf
> -----Original Message-----
> From: Bruce Robinson [SMTP:Bruce_Robinson@telus.net]
> Sent: Sunday, April 16, 2000 2:00 PM
> To: beam@sgiblab.sgi.com
> Subject: Re: PIR detectors
>
> Wilf Rigter wrote:
> >
> > ... Some IR detectors have build in gain, filters, and level
> > detector and generate a logic level output.
> > (http://www.acroname.com/robotics/parts/R3-PYRO1.html)
...
>
> Ouch. Look at the price. The question in my mind is, can I take the guts
> out of a $15 CDN motion detector (the kind that turns on an outdoor
> light) and use the detector and circuitry from that?
>
> Bruce
13517 Sun, 16 Apr 2000 20:03:59 EDT what if beam@sgiblab.sgi.com SkavenArmy@cs.com if i took one trace on a pcb , an sent it to a lot of diferent cas , then had
them all converge on the same track again , would it fire like a led flash
sussession , or just one big POP??
like this
/+\
/ / / \ \ \
o o o o o o
\ \ \ / / /
\- /
then have it like normal///
would one fire , then the next , then the next , or would it be one pop?
jay z
btw: are there any ways possible to make an led flasher off a 2n3906 , a
resistor , and a led?
btw2: anyone know of any EASY battercharger schematics?
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