This gives the Phantom 4 real flight stability and also redundancy in case of failure. The DJI Phantom 4 has in fact 2 X Inertial Measurement Units. Note: The Phantom 4 uses the DJI Go App whereas the new DJI Phantom 4 Pro uses the DJI GO 4 App. You can read further in this informative article entitled “ Drone Gyro Stabilization, IMU And Flight Controllers Explained“. Then it integrates the velocity to calculate the current position. First, it integrates the sensed acceleration, together with an estimate of gravity, to calculate the current velocity. Some IMU include a magnetometer, mostly to assist calibration against orientation drift.Ī computer continually calculates the quadcopters current position. The IMU detects changes in rotational attributes like pitch, roll and yaw using one or more gyroscopes. If it is not working correctly, then there is a very good chance that you will crash your drone.Īn inertial measurement unit works by detecting the current rate of acceleration using one or more accelerometers. The IMU (Inertial Measurement Unit) is a critical component in your drone. Remember, in some circumstances you may need to calibrate the Phantom 4 IMU a few times to get it right within range. You can also print the instructions just in case you need to do an IMU calibration while out filming with your Phantom 4. Read the Phantom 4 IMU calibration instructions a few times and watch the below videos. With the Phantom 4 Pro model, you place the drone in various positions during the calibration process. With the Phantom 4, you should not move the drone while doing the calibration. I have the IMU calibration procedure for both Phantom 4 and the Pro model below. It must be noted that the Phantom 4 and Phantom 4 Pro IMU are calibrated differently. When the IMU is back in the green and within the ideal range, then it is safe to fly the Phantom 4 quadcopter again. If your Phantom 4 is flying erratically, not flying or hovering correctly, then fly the quadcopter in and calibrate the IMU. Knowing how to calibrate the Phantom 4 IMU is important.
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