كيفية التحكم في سيارة روبوت عبر البلوتوث | Robot | car | bluetooth | L298N |H-bridge | Arduino UNO

 

يتم التحكم في السيارة التي يتم التحكم فيها عن طريق البلوتوث باستخدام الهاتف المحمول الذي يعمل بنظام Android بدلاً من أي طريقة أخرى مثل الأزرار والإيماءات وما إلى ذلك.هنا تحتاج فقط إلى لمس زر في هاتف Android للتحكم في السيارة في الاتجاهات الأمامية والخلفية واليسرى واليمنى. لذلك يتم استخدام هاتف Android هنا كجهاز إرسال ويتم استخدام وحدة Bluetooth الموضوعة في السيارة كجهاز استقبال. سيقوم هاتف Android بنقل الأوامر باستخدام البلوتوث المدمج للسيارة حتى يتمكن من التحرك في الاتجاه المطلوب مثل التحرك للأمام والعكس والانعطاف لليسار والانعطاف لليمين والتوقف

المكونات الاساسية :

-   Arduino UNO R3

-  H-bridge L298N

- HC-05 Bluetooth module

- DC Motor And Gearbox

-  7.4v battery

- Smartphone

-  Jumper wires

++ مخطط الرسم البياني :

++ الكود البرمجي هنا :

//L293 Connection   
  const int motorA1      = 3;  
  const int motorA2      = 4; 
  const int motorAspeed  = 5;
  const int motorB1      = 7; 
  const int motorB2      = 8; 
  const int motorBspeed  =6;
  

//Useful Variables
  int state;
  int vSpeed=200;     // Default speed, from 0 to 255

void setup() {
    // Set pins as outputs:
    pinMode(motorA1, OUTPUT);
    pinMode(motorA2, OUTPUT);
    pinMode(motorB1, OUTPUT);
    pinMode(motorB2, OUTPUT);
   
    // Initialize serial communication at 9600 bits per second:
    Serial.begin(9600);
}
 
void loop() {
  
    if(Serial.available() > 0){     
      state = Serial.read();   
    }
   Serial.println(state); 
  //Change speed if state is equal from 0 to 4. Values must be from 0 to 255 (PWM)
    if (state == '0'){
      vSpeed=0;}
    else if (state == '1'){
      vSpeed=100;}
    else if (state == '2'){
      vSpeed=180;}
    else if (state == '3'){
      vSpeed=200;}
    else if (state == '4'){
      vSpeed=255;}
     
  /***********************Forward****************************/
  //If state is equal with letter 'F', car will go forward!
    if (state == 'F') {
  digitalWrite (motorA1,LOW);
  delay(1);
  digitalWrite(motorA2,HIGH);                       
  delay(1);
  
  digitalWrite (motorB1,LOW);
  delay(1);
  digitalWrite(motorB2,HIGH);

  analogWrite (motorAspeed, vSpeed);
  analogWrite (motorBspeed, vSpeed);
  }
  /**********************Forward Left************************/
  //If state is equal with letter 'I', car will go forward left
    else if (state == 'I') {
  digitalWrite (motorA1,LOW);
  delay(1);
  digitalWrite(motorA2,HIGH);                       
  delay(1);
  
  digitalWrite (motorB1,LOW);
  delay(1);
  digitalWrite(motorB2,HIGH);

  analogWrite (motorAspeed, 0);
  analogWrite (motorBspeed, vSpeed);
    }
  /**********************Forward Right************************/
  //If state is equal with letter 'G', car will go forward right
    else if (state == 'G') {
  digitalWrite (motorA1,LOW);
  delay(1);
  digitalWrite(motorA2,HIGH);                       
  delay(1);
  
  digitalWrite (motorB1,LOW);
  delay(1);
  digitalWrite(motorB2,HIGH);

  analogWrite (motorAspeed, vSpeed);
  analogWrite (motorBspeed, 0);
    }
  /***********************Backward****************************/
  //If state is equal with letter 'B', car will go backward
    else if (state == 'B') {
  digitalWrite (motorA1,HIGH);
  delay(1);
  digitalWrite(motorA2,LOW);                       
  delay(1);
  
  digitalWrite (motorB1,HIGH);
  delay(1);
  digitalWrite(motorB2,LOW);

  analogWrite (motorAspeed, vSpeed);
  analogWrite (motorBspeed, vSpeed);
    }
  /**********************Backward Left************************/
  //If state is equal with letter 'J', car will go backward left
    else if (state == 'J') {
  digitalWrite (motorA1,HIGH);
  delay(1);
  digitalWrite(motorA2,LOW);                       
  delay(1);
  
  digitalWrite (motorB1,HIGH);
  delay(1);
  digitalWrite(motorB2,LOW);

  analogWrite (motorAspeed, 0);
  analogWrite (motorBspeed, vSpeed);
    }
  /**********************Backward Right************************/
  //If state is equal with letter 'H', car will go backward right
    else if (state == 'H') {
  digitalWrite (motorA1,HIGH);
  delay(1);
  digitalWrite(motorA2,LOW);                       
  delay(1);
  
  digitalWrite (motorB1,HIGH);
  delay(1);
  digitalWrite(motorB2,LOW);

  analogWrite (motorAspeed, vSpeed);
  analogWrite (motorBspeed, 0);
    }
  /***************************Left*****************************/
  //If state is equal with letter 'L', wheels will turn left
    else if (state == 'L') {
  digitalWrite (motorA2,HIGH);
  delay(1);
  digitalWrite(motorA1,LOW);                       
  delay(1);
  
  digitalWrite (motorB2,LOW);
  delay(1);
  digitalWrite(motorB1,HIGH);

  analogWrite (motorAspeed, vSpeed);
  analogWrite (motorBspeed, vSpeed);
    }
  /***************************Right*****************************/
  //If state is equal with letter 'R', wheels will turn right
    else if (state == 'R') {
  digitalWrite (motorA2,LOW);
  delay(1);
  digitalWrite(motorA1,HIGH);                       
  delay(1);
  
  digitalWrite (motorB2,HIGH);
  delay(1);
  digitalWrite(motorB1,LOW);

  analogWrite (motorAspeed, vSpeed);
  analogWrite (motorBspeed, vSpeed);    
    }

     /************************Stop*****************************/
  //If state is equal with letter 'S', stop the car
    else if (state == 'S'){
        analogWrite(motorA1, 0);  analogWrite(motorA2, 0); 
        analogWrite(motorB1, 0);  analogWrite(motorB2, 0);
    }
 
    
}

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