**4. Result**

After several attempts the drone control was modified and whenever the power meter of a mental command crosses 50% then that specific keyboard key will be

**Figure 9.** *Cube moving upwards.*

**Figure 10.** *Cube moving downwards.*

clicked. For example if the subject is in a neutral state and suppose he is thinking of a lift command and simultaneously if the power meter of that lift mental command is at 50% or crosses 50% then that command will be executed and the computer keyboard key which is assigned to the push will be clicked this will intern transmits the thrust command from the laptop and drone will receive this command and lifts off the floor. In the terminal window and live mode in the Mental command window controlling a cube are represented in the **Figures 8**–**10**. The cube is in the neutral position therefore we can observe neutral in the terminal window in **Figure 8**. When the person is thinking of lifting the cube, the cube changes from its neutral position and moves upwards therefore we can observe change from neutral to lift in the terminal window, **Figure 9**. The cube is in the neutral position therefore we can observe neutral in the terminal window, **Figure 10**.

The drone is in the resting state when the mental command of the subject is neutral, **Figure 11**. The drone takes off when the mental command of the subject has changed from the neutral to lift, **Figure 12**.

*Brain Computer Interface Drone DOI: http://dx.doi.org/10.5772/intechopen.97558*

**Figure 11.** *Drone in the neutral state.*

**Figure 12.** *The drone takes off.*
