Unknown to many, the humble Arduino is capable of generating and outputting sounds. With this cool project from audreyobscura you can build your own Arduino Synthesizer. The project uses a number of potentiometers to control various parameters such as pitch, gain and decay. The project includes in depth instructions which go beyond the electronics and explain how to put your Arduino Synthesizer into a nice project box. To get started checkout the following link.
If you are looking to get started making your synthesizer, why not check out our own ProtoShield for Arduino. The ProtoShield is an excellent tool to turn your temporary, breadboarded project into something more permanent. Proto Shields fit directly onto an Arduino board and have a large general purpose area in the middle where you can solder on your own parts to create a durable, long lasting project! The ProtoShield is a high quality, corrosion resistant gold plated PCB and represents great value at only $3!