Alt-BEAM Archive
Message #03949
To: beam@sgiblab.sgi.com
From: Sean Rigter rigter@cafe.net
Date: Sat, 29 May 1999 14:51:57 -0700
Subject: [alt-beam] Re: pin out on piro electric sensor
Unfortunately there may be different pinouts for different detectors.
However if you still have the motion detector board then you can use an
ohmmeter to identify the leads. Almost all those boards use 324 opamps
and on that IC pin 3 is +V and pin 11 is GND. These are common with 2 of
the detector pins so probe the IC pins and detecor pins with an ohmmeter
to see which pins are connected together. Now you have identified +V and
GND of the detector and in the process you have identified the remaining
pin as the detector output as well. The detectors I am familiar with use
+5V and 0V and have an output voltage anywhere in between. A typical
signal is 50-100mV in amplitude so you'll problably need an amplifier.
enjoy
wilf
Cory Duce wrote:
>
> I have a Heimann LHI 878 piro electric sensor that I got from a motion
> detector light But I don't know the pin functions. It has 3 pins.
>
> Cory Duce
> duce_beam@hotmail.com
>
> ______________________________________________________
>
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