Sainsmart DUE SAM3X8E Cortex-M3 Starter with HC-SR04 + 2-CH Relay + Keypad + Servos for Arduino PDF Projects (PDF Tutorial Instruction Manual on Basic Arduino Projects Provided) You could do hundreds of Arduino projects with this SainSmart DUE Kit. Components are included in the kit to get you started making your own Arduino Projects. A Tutorial Instruction Manual will be provided to give you a full into to Arduino programming. With this kit you will learn what Arduino is all about and how it is used. Distance sensor + 2-CH Relay + Keypad + Servos compatible with Arduino Uno, Mega, Duemilanove are included.