Hey All.
I work in museums and am looking at using a PRI (http://www.ladyada.net/learn/sensors/pir.html) to trigger an audio component of an upcoming exhibit. My curator has already sourced the audio controller (http://www.technovision.com/tecmp3.html) and I was wondering if there was anything else that I would need other than the PRI and the controller. Any help would be awesome.
Thanks.
Ben
using PRI to trigger audio
Moderators: adafruit_support_bill, adafruit
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using PRI to trigger audio
by bpshaw » Tue Aug 28, 2012 1:38 pm
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Re: using PRI to trigger audio
by adafruit_support_bill » Tue Aug 28, 2012 3:39 pm
The PIR sensor puts out a 3v ligic HIGH signal when motion is detected. Your controller inputs need to be pulled LOW to trigger a sound. In other words, you need a logic inverter. Scroll to the bottom of this page for an example inverter circuit.
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adafruit_support_bill - Posts: 15918
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2 posts • Page 1 of 1
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