SainSmart 20 Sensor Modules + UNO R3 Education Starter Kit with 1 Relay Module + HC-SR04 Distance Sensor + PDF Tutorial Instruction for Arduino UNO MEGA2560 R3 Duemilanove 2013 Robot The kit has more than 16 projects for the beginners. This is the new SainSmart Module Starter Kit, developed specially for those beginners who are interested in Arduino. A complete set of Arduino's most common and useful electronic components. Detailed PDF tutorial including project introduction and their source code will be provided after purchase. The latest SainSmart UNO R3 for Arduino is included.