# 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 ](https://1788363282-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-MdXEPSSaxxxwXMJ4joo%2Fuploads%2FVZyypnNW4EeP9q8hMaIa%2Fimage.png?alt=media\&token=d2640d37-4b6a-408c-b472-927ecfbdf38a)

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

![Calibration Process for RC](https://1788363282-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-MdXEPSSaxxxwXMJ4joo%2Fuploads%2F3hnCXZ8TbKzWiWL2YIkL%2Fimage.png?alt=media\&token=6a4f6a6e-8beb-4f16-9a8e-1277daecf19e)

* 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](https://1788363282-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-MdXEPSSaxxxwXMJ4joo%2Fuploads%2FNN0zmVKW2dzS7YBvgOjS%2Fimage.png?alt=media\&token=deafcbf5-05c2-4a0e-9760-b70ec305f44b)

* 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](https://1788363282-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-MdXEPSSaxxxwXMJ4joo%2Fuploads%2FIFAkJQeOeZ1bOV69M9QA%2Fimage.png?alt=media\&token=6e8469eb-286d-4bdb-bba9-995fabf19608)

![RPA Configuration -RC Calibration](https://1788363282-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-MdXEPSSaxxxwXMJ4joo%2Fuploads%2FZYLwOjH32vlicNkMa9Uj%2Fimage.png?alt=media\&token=04b26668-fe9a-444f-8f88-d6ad34abea34)

![RC Calibration](https://1788363282-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-MdXEPSSaxxxwXMJ4joo%2Fuploads%2FsyFOyhRuTmXShCefr3uw%2Fimage.png?alt=media\&token=38d22d9b-3fe0-40a9-b485-fcb3bf566a27)

* 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.