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wallfollower.ino
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#include <AFMotor.h>
#include <NewPing.h>
AF_DCMotor motor1(3, MOTOR12_1KHZ);
AF_DCMotor motor2(4, MOTOR12_1KHZ);
#define trigkanan A4
#define echokanan A5
#define trigtengah A2
#define echotengah A3
#define trigkiri A0
#define echokiri A1
// #define MaxDistance 100
// ini untuk menyeimbangkan ketika robot maju
#define kecepatanKanan 255
#define kecepatanKiri 255
void setup() {
Serial.begin(9600);
pinMode(trigkanan, OUTPUT);
pinMode(echokanan, INPUT);
pinMode(trigtengah, OUTPUT);
pinMode(echotengah, INPUT);
pinMode(trigkiri, OUTPUT);
pinMode(echokiri, INPUT);
}
void loop() {
long duration_kanan, duration_tengah, duration_kiri, kanan, tengah, kiri;
digitalWrite(trigkanan, LOW);
delayMicroseconds(10);
digitalWrite(trigkanan, HIGH);
delayMicroseconds(10);
digitalWrite(trigkanan, LOW);
duration_kanan = pulseIn(echokanan, HIGH);
kanan = duration_kanan / 29 / 2;
digitalWrite(trigtengah, LOW);
delayMicroseconds(10);
digitalWrite(trigtengah, HIGH);
delayMicroseconds(10);
digitalWrite(trigtengah, LOW);
duration_tengah = pulseIn(echotengah, HIGH);
tengah = duration_tengah / 29 / 2;
digitalWrite(trigkiri, LOW);
delayMicroseconds(10);
digitalWrite(trigkiri, HIGH);
delayMicroseconds(10);
digitalWrite(trigkiri, LOW);
duration_kiri = pulseIn(echokiri, HIGH);
kiri = duration_kiri / 29 / 2;
if ((tengah <= 17) && (kiri <= 22)) {
belokkanan();
} else if ((tengah <= 17) && (kanan <= 22)) {
belokkiri();
} else if (kiri <= 11) {
belokkanan();
} else if (kanan <= 11) {
belokkiri();
} else if (tengah <= 17) {
maju(); // sesuaikan dengan dominan nya
} else {
maju();
}
}
void maju() {
motor1.run(FORWARD);
motor2.run(FORWARD);
motor1.setSpeed(kecepatanKanan);
motor2.setSpeed(kecepatanKiri);
}
void belokkanan() { // dengan beda arah putaran motor
motor1.run(BACKWARD);
motor2.run(FORWARD);
motor1.setSpeed(100);
motor2.setSpeed(140);
}
void belokkiri() { // dengan beda arah putaran motor
motor1.run(FORWARD);
motor2.run(BACKWARD);
motor1.setSpeed(140);
motor2.setSpeed(100);
}