QGroundControl allows you to control a vehicle with on-screen virtual thumbsticks. These are displayed as shown below in the flight view.
Thumbstick control is not as responsive as using an RC Transmitter (because the information is sent over MAVLink). Another alternative is to use a USB Joystick/Gamepad.
To enable the virtual joysticks:
- Select the Q icon from the top toolbar
- Open the Application Settings
- Make sure you're on the General tab
Check the Virtual joystick box