# 6.5 RC Calibration

In RC configuration **(RPA Configuration > RC Config)**, RC transmitters allow the pilot to set the flight mode, control the vehicle’s movement and orientation and also turn on/off auxiliary functions (i.e. raising and lowering landing gear, etc.).

* RC Calibration involves capturing each RC input channel’s minimum, maximum and “trim” values so that ArduPilot can correctly interpret the input.
* Move both sticks in the largest circle possible so that they reach their complete range of motion. Move the Ch 5 and 6 toggle switches through their range of positions.
* Your transmitter should cause the following control changes:

                  Channel 1: low = roll left, high = roll right.

                  Channel 2: low = pitch forward, high=pitch back.

                  Channel 3: low = throttle down (off), high = throttle up.

                  Channel 4: low = yaw left, high = yaw right.

![RC Calibration ](/files/wZaa24o5NdEBC5Kn5mbl)

For calibrating RC through AeroGCS, click on "Calibrate" button. Follow the instructions popped up on the screen. 

![Calibration Process for RC](/files/xyiSaxgYsmVaKnzvpZzm)

* Ensure the status of transmitter and receiver as Power On.
* Ensure that the transmitter and receiver are connected properly.
* Ensure that the propellers are not connected to the motors. Also, make sure that the motors are not powered ON.
* Click ok and move all sticks and switches to their extreme positions.
* Reset all transmitter trims to center. Then click "Ok" button.
* Click on "Click When Done" button to move further.

![Detected RC values](/files/JJct1VYdySyw4kWJHh82)

* Detected RC values will be displayed on the screen.
* Press "Ok" button and proceed.
* You will get the screen as shown in the following image showing that RC calibration is completed.

![RC Calibration Completed](/files/B48uMvzuMKala1lwhJjc)

![RPA Configuration -RC Calibration](/files/oBNZUoxYpGNhLJ6x8CUz)

![RC Calibration](/files/hS6VCDNasZQ1U3mR0vUk)

* Ensure the channels assigned are proper or not. Click on "Update" after confirmation. 
* Parameters are sent to the device. Click on "Ok" to proceed.
* Now the entire RC calibration process is completed.


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