Next-Generation Autonomous Multi-Mode Robotic Platform Using Arduino

1#include <NewPing.h>
2#define TRIG_PIN 7
3#define ECHO_PIN 8
4#define MAX_DISTANCE 200
5NewPing sonar(TRIG_PIN, ECHO_PIN, MAX_DISTANCE);
6 
7#define IN1 5
8#define IN2 6
9#define IN3 9
10#define IN4 10
11 
12void setup() {
13    pinMode(IN1, OUTPUT);
14    pinMode(IN2, OUTPUT);
15    pinMode(IN3, OUTPUT);
16    pinMode(IN4, OUTPUT);
17}
18 
19void loop() {
20    int distance = sonar.ping_cm();
21    if (distance > 0 && distance < 20) {
22        avoidObstacle();
23    } else {
24        followLine();
25    }
26}
27 
28void avoidObstacle() {
29    // Logic for obstacle avoidance
30}
31 
32void followLine() {
33    // Logic for line following
34}
35}