Futaba GY520 The smallest, lightest and most advanced gyro in the world.  GY Series technology revolutionized gyro performance in 2000 -- and the GY520 is doing it again today. Its cutting-edge MEMS (Micro ElectroMechanical System) sensor design, ultra high-speed processing speed and advanced PID control algorithm put it a quantum leap ahead of all other heading hold gyros in size, weight and performance. Its the gyro of tomorrow -- and its available today from Futaba.
 
Features:
Offers premium performance at a surprisingly affordable price
Weighs just 6.9 g - a full 9 g less than any other heli heading hold gyro!
Exceptionally compact, for fast, easy installation in helis ranging from electric micros to .91 glow 3D Monsters!
Cutting-edge MEMS (Micro ElectroMechanical System) sensors detect smaller angle deviations than any other technology
Improved, ultra high-speed processing rates and an 800° /second rate range offer faster, smoother response and consistent pirouette rates
Delivers superior performance with analog servos -- and excels with digitals!
 
Specifications:
Width: 0.79in(20mm)
Length: 0.79in(20mm)
Height: 0.39in(10mm)
Weight: 0.243oz(6.9g)
Max. operating voltage: 3.8~6.0V(gyro only)
Current drain: 40mA(gyro only)
Selectable servo frame rate: 70Hz, 280Hz, and 560Hz
Center pulse width: 1520us(70Hz & 280Hz frame rate)
                               760us(560Hz frame rate)
Flight mode: User selectable F3C or 3D
Operating temperature: 14~113F
Control system: Advanced PID control
Sensor: MEMS vibrating structure gyro
Angular velocity range: +- 800 degrees per second
 
Recommended Servos:
250~450 size electric: Futaba S9257 EP Heli Digital (280Hz/1520us)
.31~.91 size helicopter: Futaba S9254 Digital Heli servo (280Hz/1520us)