Sound finder


Noise Finder can show you the sound intensity around you. Then you can judge if the noise is too large or not



Download the code here.

    * Noise Finder
    * Note: 
    * 1.change the WIFI_AP to your ssid of Wi-Fi
    * 2.change WIFI_PASSWORD to key of your Wi-Fi
    * well as the WIFI_AUTH
    * When the code is finish uploading, open the serial monitor 
    * as soon as possible, then you can find that: "Please open your browser, and input the following address:"
    * and there will be an address below, such, copy it to your browser, press Enter, 
    * then you can see the temperature.
   #include <LTask.h>
   #include <LWiFi.h>
   #include <LWiFiServer.h>
   #include <LWiFiClient.h>
   #define WIFI_AP "LinkIt_ONE"
   #define WIFI_PASSWORD "depot0510"
   #define WIFI_AUTH LWIFI_WPA                 // choose from LWIFI_OPEN, LWIFI_WPA, or LWIFI_WEP according to your WiFi AP configuration
   LWiFiServer server(80);
   const pinSound = A0;
   int getLight()
       return analogRead(pinSound);
   void setup()
       // keep retrying until connected to AP
       Serial.println("Connecting to AP");
       while (0 == LWiFi.connect(WIFI_AP, LWiFiLoginInfo(WIFI_AUTH, WIFI_PASSWORD)))
       Serial.println("Start Server");
       Serial.println("Server Started");
   int loopCount = 0;
   void loop()
       // put your main code here, to run repeatedly:
       LWiFiClient client = server.available();
       if (client)
           Serial.println("new client");
           // an http request ends with a blank line
           boolean currentLineIsBlank = true;
           unsigned long timer_out = millis();
           while (client.connected())
               if(millis()-timer_out > 5000)break;
               if (client.available())
                   // we basically ignores client request, but wait for HTTP request end
                   int c =;
                   if (c == '\n' && currentLineIsBlank)
                       Serial.println("send response");
                       // send a standard http response header
                       client.println("HTTP/1.1 200 OK");
                       client.println("Content-Type: text/html");
                       client.println("Connection: close");  // the connection will be closed after completion of the response
                       client.println("Refresh: 5");  // refresh the page automatically every 5 sec
                       client.println("<!DOCTYPE HTML>");
                       // output the value of each analog input pin
                       client.print("Sound = ");
"); client.println("</html>"); client.println(); break; } if (c == '\n') { // you're starting a new line currentLineIsBlank = true; } else if (c != '\r') { // you've gotten a character on the current line currentLineIsBlank = false; } } } // give the web browser time to receive the data delay(500); // close the connection: Serial.println("close connection"); client.stop(); Serial.println("client disconnected"); } } void printWifiStatus() { // print the SSID of the network you're attached to: Serial.print("SSID: "); Serial.println(LWiFi.SSID()); // print your WiFi shield's IP address: IPAddress ip = LWiFi.localIP(); Serial.println("Please open your browser, and input the following address:"); Serial.println(ip); Serial.print("\r\nsubnet mask: "); Serial.println(LWiFi.subnetMask()); Serial.print("gateway IP: "); Serial.println(LWiFi.gatewayIP()); // print the received signal strength: long rssi = LWiFi.RSSI(); Serial.print("signal strength (RSSI):"); Serial.print(rssi); Serial.println(" dBm"); }
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