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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. while the open list is not empty a) find the node with the least f on the open list, call it "q" b) pop q off the open list c) generate q's 8 successors
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Easy setup opencv in ubuntu-mate raspberry pi within 2 mints

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just download file from below link https://github.com/Robinroy-peter/opencv_rasperry_pi_ubuntumate then copy paste this command in terminal where you download the above file location source opencv_install_to_ubuntu_mate_16.04.sh
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Soft WDT reset Error can Fixed with single line code in Nodemcu (IOT)

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when you use while loops in your codeing with delay function (in nodemcu), you must face this error  Soft WDT reset . lets see a example  //////example///////// int motor = D1;//5;     // LED pin int encoder = A0;//4; // push button is connected void setup() { Serial.begin(9600);         pinMode(motor, OUTPUT);   // declare LED as output         pinMode(encoder, INPUT); } void loop() {       Serial.println(analogRead(encoder));     while(analogRead(encoder)>=400){       digitalWrite(motor, HIGH);       Serial.println(analogRead(encoder));       }       digitalWrite(motor, LOW); } when you run like this code you will face below prblms  Soft WDT reset ctx: cont  sp: 3ffef120 end: 3ffef390 offset: 01b0 >>>stack>>> 3ffef2d0:  feefeffe feefeffe feefeffe feefeffe   3ffef2e0:  40219851 00000004 3ffe835c 33383980   3ffef2f0:  40219af3 00000004 3ffe835c 0000018f   3ffef300:  3ffee338 00000004 3ffe835c 00000000   3ffef310:  40212d38 00000000 3ffee338 4020
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Init & Deploy the Firebase in Ubuntu

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open ur terminal and type firebase init and you do it as how i did it in video.then firebase open  then select Hosting:Deployed site you can see the deployed site in ur browser check this video
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Setup Firebase tools in ubuntu

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First of all you need to sign up firebase in browser. open ur terminal and type below  sudo npm install -g firebase-tools then you need to signin the firebase in cmd copy paste below code firebase login --interactive then   press y & enter . login the account in browser. check this video.
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