/* Bluetooth Controlled Robot Uses HC-05 Module and L298N Driver Author: Study For Next */ char command; // Motor Pins int LM1 = 3; int LM2 = 4; int RM1 = 5; int RM2 = 6; void setup() { Serial.begin(9600); // Bluetooth Baud Rate pinMode(LM1, OUTPUT); pinMode(LM2, OUTPUT); pinMode(RM1, OUTPUT); pinMode(RM2, OUTPUT); } void loop() { if (Serial.available()) { command = Serial.read(); if (command == 'F') { // Forward digitalWrite(LM1, HIGH); digitalWrite(LM2, LOW); digitalWrite(RM1, HIGH); digitalWrite(RM2, LOW); } else if (command == 'B') { // Backward digitalWrite(LM1, LOW); digitalWrite(LM2, HIGH); digitalWrite(RM1, LOW); digitalWrite(RM2, HIGH); } else if (command == 'L') { // Left digitalWrite(LM1, LOW); digitalWrite(LM2, HIGH); digitalWrite(RM1, HIGH); digitalWrite(RM2, LOW); } else if (command == 'R') { // Right digitalWrite(LM1, HIGH); digitalWrite(LM2, LOW); digitalWrite(RM1, LOW); digitalWrite(RM2, HIGH); } else if (command == 'S') { // Stop digitalWrite(LM1, LOW); digitalWrite(LM2, LOW); digitalWrite(RM1, LOW); digitalWrite(RM2, LOW); } } }