Wifi connection problem

[yabedibedoo]

it seems that the wifi is not connecting.Can anybody help

#include <Wire.h>
#include <LiquidCrystal_I2C.h>
#include <Keypad.h>
#include <ESP32Servo.h>
#include <BlynkSimpleEsp32.h>
#include <HTTPClient.h>

#define BLYNK_PRINT Serial
#define BLYNK_TEMPLATE_ID "TMPL6heJrl5GS"
#define BLYNK_TEMPLATE_NAME "SMART PIGEON HOLE"
#define BLYNK_AUTH_TOKEN "ovExbhLNfo7nReW_ryT03XzyvEPU0NOz"

// Define servos
Servo servoA;
Servo servoB;
Servo servoC;

// Define LCD
LiquidCrystal_I2C lcd(0x27, 16, 2);

// Define keypad
const byte ROWS = 4;
const byte COLS = 3;
char keys[ROWS][COLS] = {
  {'3', '2', '1'},
  {'6', '5', '4'},
  {'9', '8', '7'},
  {'#', '0', '*'}
};
byte rowPins[ROWS] = {19, 18, 5, 17};
byte colPins[COLS] = {2, 4, 16};
Keypad keypad = Keypad(makeKeymap(keys), rowPins, colPins, ROWS, COLS);

// Define pins
int relay1 = 26;
int relay2 = 27;

// Blynk authentication token
char auth[] = "ovExbhLNfo7nReW_ryT03XzyvEPU0NOz";

// Wi-Fi credentials
char ssid[] = "omar";
char pass[] = "password";

String server = "http://maker.ifttt.com";
String eventName = "pigeonhole";
String IFTTT_Key = "bH9MiYG5YTNq8YZn3qoz6o";

bool relay2State = false; // State of relay2

void setup() {
  Serial.begin(9600);
  lcd.begin();
  lcd.backlight();

  // Initialize Wi-Fi
  WiFi.mode(WIFI_STA);
  WiFi.begin(ssid, pass);

  // Wait for Wi-Fi connection
  while (WiFi.status() != WL_CONNECTED) {
    delay(1000);
    Serial.println("Connecting to WiFi...");
  }
  Serial.println("Connected to WiFi");

  // Initialize Blynk
  Blynk.begin(auth, ssid, pass);

  // Sync the initial state of the switch widget with relay2State
  Blynk.syncVirtual(V3);

  servoA.attach(25);
  servoB.attach(33);
  servoC.attach(32);

  pinMode(relay1, OUTPUT);
  pinMode(relay2, OUTPUT);

  digitalWrite(relay1, HIGH);
  digitalWrite(relay2, HIGH);

  lcd.print("Enter Matrix No.");
}

// Add this function to handle incoming virtual pin writes
BLYNK_WRITE(V3) {
  int switchState = param.asInt(); // Read the value from the switch widget

  // Update relay2State based on the switch state
  relay2State = (switchState == 0); // 0 in the switch widget turns relay2 on
  
  // Update the relay2 state accordingly
  digitalWrite(relay2, relay2State);
}

void sendDataToSheet(String matrixNo, String compartment) {
  String url = server + "/trigger/" + eventName + "/with/key/" + IFTTT_Key + "?value1=" + matrixNo + "&value2=" + compartment;  
  Serial.println(url);
  //Start to send data to IFTTT
  HTTPClient http;
  Serial.print("[HTTP] begin...\n");
  http.begin(url); //HTTP

  Serial.print("[HTTP] GET...\n");
  // start connection and send HTTP header
  int httpCode = http.GET();
  // httpCode will be negative on error
  if(httpCode > 0) {
    // HTTP header has been send and Server response header has been handled
    Serial.printf("[HTTP] GET... code: %d\n", httpCode);
    // file found at server
    if(httpCode == HTTP_CODE_OK) {
      String payload = http.getString();
      Serial.println(payload);
    }
  } else {
    Serial.printf("[HTTP] GET... failed, error: %s\n", http.errorToString(httpCode).c_str());
  }
  http.end();
}

void loop() {
  Blynk.run(); // Handle Blynk communication
  
  char key = keypad.getKey();
  if (key != NO_KEY) {
    static String matrixNo;
    matrixNo += key;
    lcd.setCursor(0, 1);
    lcd.print(matrixNo);
    
    if (matrixNo.length() == 6) {
      lcd.clear();
      lcd.print("Select Compartment");
      
      char compartment = NO_KEY;
      while (compartment == NO_KEY) {
        compartment = keypad.getKey();
        delay(50);
      }
      
      lcd.clear();
      lcd.print("Submitting...");
      
      if (compartment == '1') {
        openCompartment(servoA, relay1, matrixNo, String("1"));
      } else if (compartment == '2') {
        openCompartment(servoB, relay1, matrixNo, String("2"));
      } else if (compartment == '3') {
        openCompartment(servoC, relay1, matrixNo, String("3"));
      }
      
      matrixNo = "";
      lcd.clear();
      lcd.print("Enter Matrix No.");
    }
  }
}


void openCompartment(Servo& servo, int relayPin, String matrixNo, String compartment) {
  servo.write(90);
  delay(1000);

  digitalWrite(relayPin, LOW);
  
  lcd.clear();
  lcd.print("Paper Inserted? (1=yes, 0=no)");
  
  char confirmation = NO_KEY;
  while (confirmation == NO_KEY) {
    confirmation = keypad.getKey();
    delay(50);
  }
  
  if (confirmation == '1') {
    lcd.clear();
    lcd.setCursor(0, 0);
    lcd.print("Submission");
    lcd.setCursor(0, 1);
    lcd.print("Successful");
    delay(2000);
    digitalWrite(relayPin, HIGH);
    relay2State = !relay2State; // Toggle relay2 state
    digitalWrite(relay2, relay2State); // Update relay2
    Blynk.logEvent("budakhantar"); // Log event
    
    // Update switch widget state in Blynk
    Blynk.virtualWrite(V3, relay2State);
    
    // Send data to Google Sheets with a delay of 10 seconds
    sendDataToSheet(matrixNo, String(compartment));
    delay(10000);
  } else if (confirmation == '0') {
    lcd.clear();
    lcd.print("Submission");
    lcd.setCursor(0, 1);
    lcd.print("Unsuccessful");
    delay(2000);
    digitalWrite(relayPin, HIGH);
  }
  servo.write(0);
}

[chrisd79]

are you using the correct SSID and password to connect? What board are you using?

Have you tried including the WiFi.h library?

[yabedibedoo]

im using esp32 and yes the ssid is correct.Ive tried using wifi.h but still the same

[chrisd79]

@yabedibedoo

WiFi.mode(WIFI_STA);

Maybe try comment that line out?

[horace]

try running File>Examples>WiFi>WiFiScan
does you target SSID appear?

[Dozie]

Make sure your wifi is 2.4Ghz.

[yabedibedoo]

blynk did not initialize after removing that