Bot-Logic 1Watt Audio AmpThe BOBot-Logic ButtonsT-LOGIC Leo Has a 1Watt Audio amplifier that when connected to a speaker be used to create sound effects using a pwm pin of the Arduino.

The Audio Amp Is powered from the 5 Volt Arduino Supply and can drive a 8 ohm speaker connected to J2. this picture on the Right shows the audio volume control between the LCD and the 3 buttons on the top right corner of the board.

The Picture on the left shows the audio circuit which is on the bottom right behind the Volume control.