Hello, friends in this tutorial I am going to show you "How you can fix the error for when you compile the code of  this 👉"Wifi control car Project"😎 or using any other projects. Here we will provide the best Solution for your code compilation time so there is problem and if you have use another code of esp32 when you got the same error in Arduino IDE so this tutorial is  very help for you. so without any wasting time lets get started.....  

Step 1: It is better to switch to older version of Arduino IDE:

It means you have to Download older version of arduino and switch to "2.4.0" or " you can use this version 1.8.19" 👉 link is here = Download_Arduino_1.8.19 👈

Step2 : Adding up the additional board Url:

Click on File>Preferences.

Step 3: Click on Icon to add URL:

Now press “Enter” and Paste the url ” https://raw.githubusercontent.com/espressif/arduino-esp32/gh-pages/package_esp32_index.json” And then Press ok.                                                                                                                                                                                                                             

Step 4: Click Tools>Board>BoardManager: 

And click on “Board Manager

Now search for “ESP32” and select esp32 BY “Espressif Systems” and select version “2.0.11”and install it, It may take a while So, please be patient

Step 6: NOW Connect Your ESP32 to your Laptop or Computer:

 Then go to Tools>Port>and the Port on which you Connected Esp32 module

Step 7: You can check your port using device manager and going to ports:

If  You have missing drivers then you can install them using  this link 👉“https://www.silabs.com/documents/public/software/CP210x_Windows_Drivers.zip”

You can Download these two libraries from the links given:

ESPAsyncWebServer  = https://codeload.github.com/me-no-dev/AsyncTCP/zip/refs/heads/master

AsyncTCP= https://codeload.github.com/me-no-dev/ESPAsyncWebServer/zip/refs/heads/master

Step 8: To Install these libraries You have to go to Sketch > Include Library> Add .Zip Library and select the zip files One by one:

Now it is Good to Go you can Paste the code and Start Uploading

Note: Some Esp 32 modules requires Pressing the Boot Button that is present on IC so press and hold it After Compilation done and system is Connecting…. to ESP 32 Module to Upload code on It,Thanks

.

Shall we go further and explain how to use the sound sensor? Controlling an LED by clapping using an Arduino and a sound sensor. We cover how to use the KY-038 Sound Sensor with Arduino. It also shows how you can control a clapping LED using an Arduino and a sound sensor. We've only shown clapping LED control, but you can use the same concept to control any electronic device. Once you watch the whole video, you will understand everything.

What is the sound sensor KY-038?

KY-038 A small sound sensor works as a microphone that detects sound signals. The sensor detects audio signals and provides a digital or analog output. The sound sensor can be used to create exciting projects like clapping a switch or any project where we can do action-based sound detection. It is very cheap, you can buy it for 2-3 USD dollars. Let's take a look at the architecture of KY-038:-

Sound sensor KY-038 with 4 pins:-

 AO – Analog output

G – ground

+ – VCC

DO – Digital output

How the KY-038 sensor works:-

The sensor has 3 main components on its board. First, a sensor unit on the front of the module that physically measures the area and sends an analog signal to the second unit, the amplifier. The amplifier amplifies the signal according to the resistance value of the potentiometer and sends the signal to the analog output of the module. The third component is a comparator that turns off the digital output and LED if the signal falls below a certain value.

We can control the sensitivity by adjusting the potentiometer connected to the KY-38 sensor.

Note: The signal will be inverted; that is, if you measure a high value, it will appear as a low voltage value on the analog output.

7 Components Needed to Control LED Clap Using Arduino and Sound Sensor:-

• 1  Arduino Uno board
• 1  USB cable
• 1  KY-038 sound sensor
• 1  1K pull-up register
• 5  male to female connecting cable
• 1  cutting board
• 1  LED

Here is our Source Code:-

// This code is written by supotronix.com

 int soundSensor=2;
 int LED=4;
 boolean LEDStatus=false;

 void setup() {
 pinMode(soundSensor,INPUT);
 pinMode(LED,OUTPUT);

 }

 void loop() {
  // here is the loop is continue

  int SensorData=digitalRead(soundSensor); 
  if(SensorData==1){

    if(LEDStatus==false){
        LEDStatus=true;
        digitalWrite(LED,HIGH);
    }
    else{
        LEDStatus=false;
        digitalWrite(LED,LOW);
    }
   }
  }