Hi,
Relatively new to all this..
I know how to connect a normal piezo element to an arduino, however I'm after something pretty loud (more voltage = louder noise). How can I connect the piezo to my 5V as well as controlling it via a digital pin?
Check PWM basics here - http://www.arduino.cc/en/Reference/AnalogWrite - or this - http://www.hobbytronics.co.uk/arduino-tutorial7-piezo-beep -