Can someone help me with this esptool.py error?

[achu_2112]

#define BLYNK_TEMPLATE_ID "*****"
#define BLYNK_TEMPLATE_NAME "*****"
#define BLYNK_AUTH_TOKEN "*****"

#include <Wire.h> 
#include <LiquidCrystal_I2C.h>
#include <Servo.h>
#include <BlynkSimpleEsp8266.h>

#define PIR_PIN 2
#define RELAY_PIN 3
#define BUZZER_PIN 4
#define SERVO_PIN 5

Servo servo;
LiquidCrystal_I2C lcd(0x27, 16, 2);

char auth[] = "*****";
char ssid[] = "*****";
char pass[] = "*****";

bool pestCaught = false;

BLYNK_CONNECTED() {
  Blynk.syncAll();
}

BLYNK_WRITE(V0) {
  int value = param.asInt();
  if (value == 1) {
    openTrapDoor();
  }
}

void setup() {
  Serial.begin(9600);
  pinMode(PIR_PIN, INPUT);
  pinMode(RELAY_PIN, OUTPUT);
  pinMode(BUZZER_PIN, OUTPUT);
  servo.attach(SERVO_PIN);
  lcd.init();
  lcd.backlight();
  lcd.setCursor(0, 0);
  lcd.print("Welcome");
  delay(3000);
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("IoT RODENT GUARD");
  delay(5000);
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("PEST AWAITING");
  Blynk.begin(auth, ssid, pass);
}

void loop() {
  if (!pestCaught && digitalRead(PIR_PIN) == HIGH) {
    caughtPest();
  }
  Blynk.run();
}

void caughtPest() {
  lcd.clear();
  lcd.print("PEST CAUGHT");
  Blynk.virtualWrite(V1, "Rodent Alert: A pest has been caught!");
  digitalWrite(BUZZER_PIN, HIGH);
  delay(20000);
  digitalWrite(BUZZER_PIN, LOW);
  pestCaught = true;
  digitalWrite(RELAY_PIN, HIGH); // Activate electric shock
  delay(10000); // Keep electric shock active for 10 seconds
  digitalWrite(RELAY_PIN, LOW); // Turn off electric shock
}

void openTrapDoor() {
  servo.write(90); // Assuming 90 degrees is the position to open the trap door
  delay(1000); // Delay to allow servo to move
  pestCaught = false;
  lcd.clear();
  lcd.print("PEST AWAITING");
}

ERROR:
A fatal esptool.py error occurred: Failed to connect to ESP8266: Timed out waiting for packet header

MICROCONTROLLER : ARDUINO UNO R3
BOARD : GENERIC ESP8266 MODULE (esp8266 community)
PORT : COM5

[BitSeeker]

achu_2112, welcome to the forum!

Please could you clarify which board you are using? Is it a Uno R3, and ESP8266, or as looks likely, an UNO+WiFi R3?

The UNO+WiFi R3 has some micro-switches that have to be set in order to program the correct onboard Micro-controller. It looks like you are trying to program the onboard ESP8266, but the MCU is being identified as a UNO R3, so might perhaps the switches be set to access the 328P?

[achu_2112]

Yes, thank you for responding. The microcontroller that I'm using is Arduino UNO R3 ATmega328P CH340G. It is not have a built in WiFi Module. I use a seperate WiFi Module that is ESP-01S

[BitSeeker]

In that case you need to select the correct board - in Tools -> Board select 'Arduino AVR Boards' and then 'Arduino Uno'. The make sure you have selected the correct serial port. Now compile and upload again.