Wifi Based Robot Car

Just Do Electronics January 02, 2021

Video :-

Circuit Diagram :-

Code :-

 

//Prateek
//wwww.prateeks.in
//https://www.youtube.com/c/JustDoElectronics/videos

#define BLYNK_PRINT Serial
#include <ESP8266WiFi.h>
#include <BlynkSimpleEsp8266.h>

char auth[] = "gKSYLU5AMkvYBdhddjSd8aAbyHSDsn5FZsm";

// Your WiFi credentials.
char ssid[] = "justDo";
char pass[] = "pratik123";

BlynkTimer timer;

const byte L298N_A_pin = D1; // GPI05
const byte L298N_A_In1_pin = D2; //GPI04
const byte L298N_A_In2_pin = D3; //GPI0

const byte L298N_B_In3_pin = D4; // GPI02
const byte L298N_B_In4_pin = D5; // GPIO14
const byte L298N_B_pin = D6; //GPI12

const byte Led1_pin =  D7; //GPIO13
const byte Led2_pin =  D8; //GPIO15
const byte Led3_pin =  D9; //GPIO3
const byte Led4_pin = D10; //GPI01
const byte Korna_pin = D0; //GPI016

WidgetLED led1(V1);
WidgetLED led2(V2);
WidgetLED led3(V3);
WidgetLED led4(V4);
WidgetLED led5(V5);
WidgetLED led6(V6);
WidgetLED led7(V7);
WidgetLED led8(V8);

byte SolSinyal = 0;
byte SagSinyal = 0;
byte ArkaLamba = 0;

BLYNK_WRITE(V10) {
  /* Korna*/
  digitalWrite(Korna_pin, param.asInt());
}

BLYNK_WRITE(V11) {
  /* On Far*/
  digitalWrite(Led3_pin, param.asInt());
}

void motorSpeed(int prmA, byte prmA1, byte prmA2, int prmB, byte prmB1, byte prmB2)
{
  analogWrite(L298N_A_pin, prmA);
  analogWrite(L298N_B_pin, prmB);

  digitalWrite(L298N_A_In1_pin, prmA1);
  digitalWrite(L298N_A_In2_pin, prmA2);
  digitalWrite(L298N_B_In3_pin, prmB1);
  digitalWrite(L298N_B_In4_pin, prmB2);

  if (prmA1 == LOW)
    led3.off();
  else
    led3.on();

  if (prmA2 == LOW)
    led7.off();
  else
    led7.on();

  if (prmB1 == LOW)
    led4.off();
  else
    led4.on();

  if (prmB2 == LOW)
    led8.off();
  else
    led8.on();

}


BLYNK_WRITE(V0) {
  int x = param[0].asInt();
  int y = param[1].asInt();
  // x =  -2 -1 0 1 2
  // Y =  -2 -1 0 1 2
  if (y >= 0)
  {
    ArkaLamba = 0;
    digitalWrite(Led4_pin, LOW);
  }
  else
  {
    ArkaLamba = 1;
    SolSinyal = 1;
    SagSinyal = 1;
    digitalWrite(Led1_pin, HIGH);
    digitalWrite(Led2_pin, HIGH);
    digitalWrite(Led4_pin, HIGH);
  }

  if ((x == 0) && (y == 0)) // duruyor
  {
    motorSpeed(0, LOW, LOW, 0, LOW, LOW);
    SolSinyal = 0;
    SagSinyal = 0;
    digitalWrite(Led1_pin, LOW);
    digitalWrite(Led2_pin, LOW);
  }
  else if ((x == 0) && (y > 0)) // düz ileri
  {
    if (y == 1) {
      motorSpeed(900, HIGH, LOW, 900, HIGH, LOW);
    }
    else {
      motorSpeed(1023, HIGH, LOW, 1023, HIGH, LOW);
    }
    SolSinyal = 0;
    SagSinyal = 0;
    digitalWrite(Led1_pin, LOW);
    digitalWrite(Led2_pin, LOW);
  }
  else if ((y == 0) && (x > 0)) // Tam Sag donuş
  {
    motorSpeed(900, HIGH, LOW, 900, LOW, HIGH);
    SagSinyal = 1;
    digitalWrite(Led2_pin, HIGH);
  }
  else if ((y > 0) && (x > 0)) // Sag donuş
  {
    motorSpeed(1023, HIGH, LOW, 900, LOW, LOW);
    SagSinyal = 1;
    digitalWrite(Led2_pin, HIGH);
  }
  else if ((y == 0) && (x < 0)) // Tam sola donuş
  {
    motorSpeed(900, LOW, HIGH, 900, HIGH, LOW);
    SolSinyal = 1;
    digitalWrite(Led1_pin, HIGH);
  }
  else if ((y > 0) && (x < 0)) // Sola donuş
  {
    motorSpeed(900, LOW, LOW, 1023, HIGH, LOW);
    SolSinyal = 1;
    digitalWrite(Led1_pin, HIGH);
  }

  if ((y < 0) && (x < 0)) // Sola geri
    motorSpeed(900, LOW, LOW, 1023, LOW, HIGH);
  else if ((y < 0) && (x > 0)) // Sag geri
    motorSpeed(1023, LOW, HIGH, 900, LOW, LOW);
  else if ((y < 0) && (x == 0)) // tam geri
    motorSpeed(900, LOW, HIGH, 900, LOW, HIGH);

}

void setup() {
  Serial.begin(115200);
  pinMode(L298N_A_In1_pin, OUTPUT);
  pinMode(L298N_A_In2_pin, OUTPUT);
  pinMode(L298N_B_In3_pin, OUTPUT);
  pinMode(L298N_B_In4_pin, OUTPUT);

  digitalWrite(L298N_A_In1_pin, LOW);
  digitalWrite(L298N_A_In2_pin, LOW);
  digitalWrite(L298N_B_In3_pin, LOW);
  digitalWrite(L298N_B_In4_pin, LOW);

  pinMode(Led1_pin, OUTPUT);
  pinMode(Led2_pin, OUTPUT);
  pinMode(Led3_pin, OUTPUT);
  pinMode(Led4_pin, OUTPUT);

  digitalWrite(Led1_pin, LOW);
  digitalWrite(Led2_pin, LOW);
  digitalWrite(Led3_pin, LOW);
  digitalWrite(Led4_pin, LOW);
  Blynk.begin(auth, ssid, pass);
  timer.setInterval(1000L, sendTemps);
}
void sendTemps()
{
  if (SolSinyal == 1)
    digitalWrite(Led1_pin, !digitalRead(Led1_pin));

  if (SagSinyal == 1)
    digitalWrite(Led2_pin, !digitalRead(Led2_pin));

  if (ArkaLamba == 1)
    digitalWrite(Led4_pin, !digitalRead(Led4_pin));

  if (digitalRead(Led1_pin) == HIGH)
    led1.on();
  else
    led1.off();

  if (digitalRead(Led2_pin) == HIGH)
    led2.on();
  else
    led2.off();

  if (digitalRead(Led3_pin) == HIGH)
    led5.on();
  else
    led5.off();

  if (digitalRead(Led4_pin) == HIGH)
    led6.on();
  else
    led6.off();
}


void loop() {
  Blynk.run();
  timer.run();
}

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