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Author Topic: looking for a louder buzzer  (Read 1956 times)
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5V/25mA = 200 ohm - so  180, 220, those are standard values.
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Designing & building electrical circuits for over 25 years. Check out the ATMega1284P based Bobuino and other '328P & '1284P creations & offerings at  www.crossroadsfencing.com/BobuinoRev17.
Arduino for Teens available at Amazon.com.

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ok, thanks again.
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I figured it out how to make a Piezo loud after way too long.  You add an Auto-transformer to the circuit that you can get at the dollar store. I made an instructable on it here:

http://www.instructables.com/id/How-to-make-an-Arduino-driven-Piezo-LOUD/
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check - http://forum.arduino.cc/index.php?topic=143940.0 -
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Rob Tillaart

Nederlandse sectie - http://arduino.cc/forum/index.php/board,77.0.html -
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