6.6 Motor and ESC Calibration

6.6.1 Motor Testing:

Note: It is mandatory to calibrate ESC before the motor test.

In this section, testing of the motors is carried out. There is a motor test option for quadcopter and hexacopter devices. As per the frame type, it shows the motor test slider. It will show 4 sliders for a quad and 6 sliders for hexa as shown in the image below:

Note: Remove the propellers from the device before motor test.

6.6.2 ESC Calibration

In ESC Calibration (RPA Configuration > ESC Calibration), Electronic Speed Controllers (ESCs) regulate motor speed (and direction) based on the PWM input value from the flight controller (FC). The range of inputs to which an ESC will respond is configurable, and the default range can differ even between ESCs of the same model.

This calibration updates all the ESCs with the maximum and minimum PWM input values that will be supplied by the flight controller. Subsequently all the ESCs/motors will respond to flight controller input in the same way (across the whole input range).

Click on "Calibrate" button and proceed with the instructions that appeared on the screen. Follow all the steps for calibrating all the ESCs. The steps mentioned are as follows:

  • Disconnect USB and battery so the flight controller powers down.

  • Connect the battery.

  • The arming tone will be played if the vehicle has a buzzer attached.

  • Press the safety button until it turns into solid red color if the flight controller is having safety button.

  • Listen to two beeps in a musical tone.

  • After a few seconds, listen to a number of beeps (one for each battery cell you are using).

  • Listen to a final single long beep indicating the endpoints and completion of calibration of ESCs.

  • Disconnect the battery and power up again normally.

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