View single post by ArizonaEvp | |||||||||||||
Posted: Nov 26th, 2011 12:49 PM |
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ArizonaEvp
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clockdryve wrote: Ahh, Mike....I see you are (were) looking into Ultrasound. Nooooooooooooooooo!!!! Step away from the Buy it Now button You can get an ultrasonic transducer for a few bucks online.....either new or used. If you had an old dynamic mic, you could replace the electret mic with the transducer. Link to mouser electronics: http://www.mouser.com/Search/Refine.aspx?Keyword=ultrasonic+transducer You could build one from schematics: http://pw1.netcom.com/~t-rex/BatDetector.html If you wish to build one from a kit: http://www.econvergence.net/batdet.htm OR...... http://www.midnightscience.com/ultra-kits.html I built one from a kit a couple of years back. It works just peachy-keen. I can hear bats clicking away. I can hear mice - running water - rubbing your fingers together - etc. Here's a pic of mine.............. Attached Image (viewed 269 times):
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