Arduino MEGA 2560 R3 User Manual

Figure 5 shows what is on the LCD when the user input the x value of the accident location.
Here we take 22 as an example.
Figure 6: End of the x value
After pressing ‘*’ key, there comes a comma on the LCD. This means the input of the first
value x is finished, and the user can input next value y now.

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

Summary

AVR Lab Board Overview

Wiring Connections

Initial State Description

Program Start Sequence

Input State

Inputting X Value

Step showing the input of the 'x' parameter for accident location.

Confirming X Value

Indicates completion of 'x' value input with a comma on the LCD.

Inputting Y Value

Step showing the input of the 'y' parameter for accident location.

Search and Found States

Searching for Location

Displays the drone's current state and location search progress.

Accident Location Found

Indicates the accident location has been found and the drone is grounded.

Drone Operation States

Drone Fly Back

Shows the display when the drone is initiating its return flight.

Abort State

Displays the 'Abort' state triggered by user input.