This sensor shield V2.0 is easy for Arduino fans to plug and play with. For some Arduino starters, it is difficult to add circuits on Arduino, so this sensor expansion board which can connect most senor shields to Arduino control panel solves the problem easily. It meets the expansion needs of most Arduino. Arduino is an open-source physical computing platform based on a simple i/o board and a development. Arduino can be used to develop stand-alone interactive objects or can be connected to software on your computer (e.g. Flash, Processing, MaxMSP).