?GREAT ADD-ON TO ARDUINO OR RASPBERRY PI? -It?s a starter kit that perfect for anybody who wants to start using Arduino or Raspberry Pi. ?HIGHEST COST COMPONENTS KIT? -It comes with more than 500pcs sensors and components for fun and simple electronic projects. ?GREAT QUALITY AND BIG BOX PACKING? -Resistors/LED/Transistors and Integrated Circuits are individually packaged and labeled, and packing in a plastic box which is bigger enough for you. The Breadboard Power Supply come with a USB Power Cables,which is hard to find. Datasheet and Tutorial are available to download from our official website or you can contact our customer service.