วันศุกร์ที่ 28 กันยายน พ.ศ. 2561

Arduino 15 Building an Arduino Bluetooth RC car

    

Building an Arduino Bluetooth RC car



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    //speed of motors betwen 0 and 255, if you like you can change it
    int pwm_speedA = 255;
    int pwm_speedB = 240;
    char command;
     
    void setup() {
    Serial.begin(9600);
    //pins for motor controller
    pinMode(11, OUTPUT);
    pinMode(10, OUTPUT);
    pinMode(9, OUTPUT);
    pinMode(6, OUTPUT);
    pinMode(5, OUTPUT);
    pinMode(3, OUTPUT);
     
    }
     
    void loop() {
     
    if(Serial.available() > 0){
    command = Serial.read();
    motors_stop();
    switch(command){
    case 'F':
    forward();
    break;
    case 'B':
    backward();
    break;
    case 'L':
    left();
    break;
    case 'R':
    right();
    break;
    }
    }
     
    }

     // function for driving straight
    void forward(){
    digitalWrite(10, HIGH);
    digitalWrite(11, LOW);
     
    digitalWrite(9, HIGH);
    digitalWrite(6, LOW);
     
    analogWrite(5, pwm_speedA);
    analogWrite(3, pwm_speedB);
    }
     
    //function for reversing
    void backward(){
     
    digitalWrite(10, LOW);
    digitalWrite(11, HIGH);
     
    digitalWrite(9, LOW);
    digitalWrite(6, HIGH);
     
    analogWrite(5, pwm_speedA);
    analogWrite(3, pwm_speedB);
    }
     
    //function for turning left
    void left(){
    digitalWrite(11, LOW);
    digitalWrite(10, LOW);
     
    digitalWrite(9, HIGH);
    digitalWrite(6, LOW);
     
    analogWrite(3, 0);
    analogWrite(5, pwm_speedA);
    }
     
    //function for turning right
    void right(){
    digitalWrite(10, HIGH);
    digitalWrite(11, LOW);
     
     
    digitalWrite(9, LOW);
    digitalWrite(6, LOW);
     
    analogWrite(3, pwm_speedB);
    analogWrite(5, 0);
     
    }
     
    //function for stopping motors
    void motors_stop(){
     
    digitalWrite(11, LOW);
    digitalWrite(10, LOW);
     
    digitalWrite(9,LOW);
    digitalWrite(6, LOW);
     
    analogWrite(5, 0);
    analogWrite(3, 0);
    }
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