Contents: 4x projects from the Arduino Starter Kit 1x Arduino? Uno board Rev3 1xUSB cable 1xbreadboard 1xPush button 1xPhotoresistors 1xTemperature sensor 1xToggle switch 6xLED (red) 1xPVC cable red 1xPVC cable black 1xPiezo capsule 7xDiodes 22xResistors 220 Ohm 7xResistors 560 Ohm 7xResistors 1 kOhm 7xresistors 4.7 kOhm 22xresistors 10 kOhm 7xresistors 1 MOhm 7xresistors 10 MOhm System Requirements: - USB port - Windows XP or better - Mac OS X 10.5 or better - Linux