With the development of electronics and computers, microcontrollers and microprocessors are used in many devices in the home use as well as professional. As home theater systems, and control panel, industrial robots have sensors and potentiometers, rotary or lightning. Their purpose is simple and intuitive to use. In addition, they are elements that will help You build many interesting projects based on the Arduino or Rapsberry Pi. Thinking about hobbystach, and professionals alike, we have prepared a range of modules potentiometers and encoders series Grove, which are characterized by the simple connection of basic modules and a wide range of applications.