Sensors

ArduPilot Mega IMU board

For Scout to auto-stabilize, it needs sensors to find its orientation in space.  No one sensor can do this on its own.  It takes several different sensors working together to calculate Scout’s orientation.  The sensors used to calculate orientation are gyroscopes and accelerometers.  More recently, magnetometers are being incorporated to calculate direction.

Conveniently, there are boards that incorporate all of these sensors together.  These boards are called inertial measurement unit, or IMU.  An IMU uses accelerometers and gyroscopes to measure and report the aircrafts velocity, orientation and gravitational forces on multiples axis.

Scout uses the ArduPilot Mega IMU shield.  I chose this board because it was developed to work with the ArduPilot Mega board.

Posted in Guide, Sensors by Russell

6 Responses to “Sensors”

  1. azka says:

    can i use audrino uno for gyroscope. and how many audrino uno for making quadcopter.
    sory for my english..^_^

    • Russell says:

      You can’t use an Arduino Uno for a gyroscope. You need an actual gyroscope sensor. You could use an Arduino Uno to control your quadcopter and read the sensor data from a gyroscope and accelerometer. The Aeroquad platform supports the Arduino Uno and other Arduino boards.

  2. Oliver says:

    Are there any individual shields that I could use? The ENTIRE IMU board is wayyy too expensive for my budget, plus I only want to program the copter to go short distances, nothing that would require a GPS or wireless signal.

    • Russell says:

      Do you have a flight controller? If you are using the ArduPilot Mega then you have to use the ArduPilot Mega IMU shield.

      If you just want to stabilize the aircraft, then I would recommend the Aeroquad platform. They offer different flight controller and IMU kits for as low as $100 and on up. I plan on doing a How-to guide on cheap auto-stabilizing for a quadcopter in the next couple of weeks.

  3. ARUNI says:

    plz help me how to use gyroscope, accelerometer for my uav…..???? is magnetometer required for that…..????plz help me

    • Russell says:

      A magnetometer isn’t required. A magnetometer is used to determine heading of the aircraft. If you were to add a GPS antenna then you should also add a magnetometer.

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