====== GY50 ======
Module gyroscope 3 axes

  * Chip: L3G4200D; 
  * Power supply :3~5V; 
  * Communication methods: IIC / SPI communication protocol; 
  * Measuring range: 250 / 500 / 2000 dps
  * Application	For gaming, virtual reality input device, motion control , HMI, GPS, electrical equipment and robotics

  * [[https://github.com/pololu/l3g-arduino]]