The navigation board includes the sensors and a 40 MIPS microcontroller with a
fast 12 bits ADC converter.
The navigation board has one ultrasonic transceiver and one ultrasonic receiver
to measure the height of the drone up to 6 meters / 20 feet. The altimeter
provides a measure at a 25 Hz rate.
A 3 axis digital MEMS accelerometer positioned at the center of gravity of the
AR.Drone. The accelerometer is used in a +/- 2g range and digitalized by an
on-chip 10 bit ADC. Data are sent to the microcontroller.
A two axis MEMS gyroscope and a precision piezoelectric gyroscope for the yaw
measurement and heading control. Both sensors measure up to 500 ¢X/s. These are
analog sensors digitalize by the 12bits ADC of the microcontroller.
These sensors compose the inertial measurement unit. The fusion of these data
allows computing the Euler angles of the AR.Drone. Euler angles are used for
The navigation board software may be updated when you update the AR.Drone
This kit includes 1 navigation board and 4 screws.