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A* ALGORITHM BASICS FOR PATH FINDING & HEURISTICS METHODS : ARTIFICIAL INTELLIGENCE

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 A* ALGORITHM BASICS FOR PATH FINDING A* , widely used  known form of best-first search & path planning algorithm nowadays in mobile robots,games. this is the function for A*,                                     f(n) = g(n) + h(n) g ( n ) is the cost of the path from the start node to n , and h ( n ) is a heuristic function that estimates the cost of the cheapest path from n to the goal This will find cheapest f(n) value in neighbor nodes to archive goal node. check below image  A to B path finding with g(n),h(n),f(n) value In the final level check below image Now we will check the Algorithm // A* Search Algorithm 1. Initialize the open list 2. Initialize the closed list put the starting node on the open list (you can leave its f at zero) 3. ...
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Arduino based Voice Recognition System

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Hi guys

Now i m going to show you how to control 3 led lights with ardunio based
voice Recognition system...
Easy way to learn  Arduino...


Used parts :
   1) Arduino mega 2560
   2) 3 LED lights
   3) HC-06 Blutooth module http://www.instructables.com/id/Add-bluetooth-to-your-Arduino-project-ArduinoHC-06/
   4) Android App for voice recognition https://play.google.com/store/apps/details?id=robotspace.simplelabs.amr_voice&hl=en


Connecting digram

Above project source code you can find below link in GITHUB
https://github.com/Robinroy-peter/Arduino-based-Voice-Recognition-System-.git

//// Code////
///////////////////////////////////////////////////////////
//  Coded by Robinroy Peter    14/07/2016                //
///////////////////////////////////////////////////////////
String a;

void setup() {
   
    Serial.begin(9600); // opens serial port, sets data rate to 9600 bps
    Serial2.begin(9600); //for blutooth module
    pinMode(2,OUTPUT);
    pinMode(3,OUTPUT);
    pinMode(4,OUTPUT);
    digitalWrite(2,LOW);
    digitalWrite(3,LOW);
    digitalWrite(4,LOW);
}

void loop() {

    while(Serial2.available()) {
   
        a= Serial2.readString();// read the incoming data as string
       
        Serial.println(a);
   
    }
    if(a =="*1#"){
        digitalWrite(2,HIGH);
    }
    if(a =="*2#"){
        digitalWrite(3,HIGH);}
    if(a =="*3#"){
        digitalWrite(4,HIGH);}
    if(a =="*stop#"){
        digitalWrite(2,LOW);
        digitalWrite(3,LOW);
        digitalWrite(4,LOW);}
    if(a =="*lights on#"){
        digitalWrite(2,HIGH);
        digitalWrite(3,HIGH);
        digitalWrite(4,HIGH);}
    if(a =="*blink#"){
       while(a !="*stop#"){
          while(Serial2.available()) {
       
        a= Serial2.readString();// read the incoming data as string
       
        Serial.println(a);
       
        }
        if(a =="*stop#"){
          break;}
              digitalWrite(2,HIGH);
              delay(200);
              digitalWrite(3,HIGH);
              delay(200);
              digitalWrite(4,HIGH);
              delay(200);
              digitalWrite(2,LOW);
              delay(200);
              digitalWrite(3,LOW);
              delay(200);
              digitalWrite(4,LOW);
              delay(200);
        }
        }
        if(a =="*next#"){
        while(a !="*stop#"){
          while(Serial2.available()) {
       
        a= Serial2.readString();// read the incoming data as string
       
        Serial.println(a);
       
        }
        if(a =="*stop#"){
          break;}
              int del = 70;
              digitalWrite(4,LOW);
              digitalWrite(2,HIGH);
              delay(del);
              digitalWrite(2,LOW);
              digitalWrite(3,HIGH);
              delay(del);
              digitalWrite(3,LOW);
              digitalWrite(4,HIGH);
              delay(del);
              digitalWrite(3,LOW);
              digitalWrite(4,HIGH);
              delay(del);
              digitalWrite(4,LOW);
              digitalWrite(3,HIGH);
              delay(del);
              digitalWrite(3,LOW);
              digitalWrite(2,HIGH);
              delay(del);

        }
        }

}
//////////code end////////

Here used Voice Commands
 1) one           -switch on 1st led
 2) two           -switch on 2nd led
 3) three         -switch on 3rd led
 4) stop           -switch off all leds
 5) blink          -leds running a pattern
 6) next           -leds running another pattern
 7) lights on    -all leds on

Watch below video in youtube
 
 
Thank you guys plz subscribe me in youtube and follow me in facebook
youtube    : https://www.youtube.com/channel/UCTAWNE9T7PUNG5GtXRPvBJg
Facebook :https://www.facebook.com/mechatronsdevelopers/

Thank you ....

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