Calibrating an Accelerometer Sensor on a Drone

Calibrating sensors on a new drone can be a challenge if you are unfamiliar with some of the mathematics surrounding the setup of drones and robots. Accelerometer sensors measure acceleration in meters per second squared and weight in G-forces.
The sensor measures the acceleration of your drone, ensuring more control over the object. Different drones require different calibrations. This tutorial will outline the calibration process for an Arduino drone.

Step 1: Connect your accelerometer to the Arduino by placing the output pins in the Arduino’s analog pins. The Vin pin goes into the 5V pin, and the GND output pin connects to the GND analog pin.

Step 2: Open the sample sketch file in your computer. Navigate to the File folder, and then click Examples. Click Sensors within that subfolder and then click ADXL3xx. Upload your new values to the Arduino to see a change.

Step 3: While choosing the right accelerometer, consider the maximum linear acceleration. The accelerometers will vary in size depending on your size of robot or drone. For example, a small drone could use a 2g accelerometer, whereas a rocket might need a 16g device.

Recap: After purchasing your new drone, you should be able to find instructions regarding your individual accelerometer sensor. Understanding that the accelerometer sensor works on an x, y, z access and works with gravity is significant to calibrating it accurately. Some trial and error with accelerometer sizes could benefit you as you find the best match for your drone.