Arduino MEGA 2560 R3 User Manual

Figure 7: Input the y value
Figure 7 shows that LCD displays what you input for y value of the accident location. Then
user can press ‘#’ to end the input of the y value, and it means user has already finished the input of
the accident location. After this operation, the search will start automatically.
7. Search State
Figure 8 shows the picture of searching procedure. The LCD displays the current location of
the drone with state ‘S’ and x, y, height in the first line. And LCD displays ‘not found’ in the second
line, and this means it have not found the location yet.
Figure 8: Searching
8. Found Accident
Figure 9 shows what displays on the LCD when the program found the location with x, y and
height, and it also has a state of the drone meaning grounded. Since the drone needs to fly back,
so the result will keep on the LCD for about 3 seconds.

Arduino MEGA 2560 R3 Specifications

General

Microcontroller	ATmega2560
Operating Voltage	5V
Input Voltage (recommended)	7-12V
Input Voltage (limit)	6-20V
Digital I/O Pins	54 (of which 15 provide PWM output)
Analog Input Pins	16
DC Current per I/O Pin	20 mA
DC Current for 3.3V Pin	50 mA
Flash Memory	256 KB of which 8 KB used by bootloader
SRAM	8 KB
EEPROM	4 KB
Clock Speed	16 MHz
LED_BUILTIN	13
Length	101.52 mm
Width	53.3 mm
Weight	37 g