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Keypad locker system

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Basic Remote control car

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 Basic Remote control car with IRremote Prototype 01 YouTube:  video   Circuit: The LEDs connected in the circuit indicates that they are connected to 2 wheels of the car respectively with the help of motor driver. YouTube:  Video Code 1: (Basic remote control car without password) #include <IRremote.h> int RECV_PIN = 2; IRrecv sensor(RECV_PIN); decode_results value1; #define front 1904 #define back 3952 #define right 752 #define left 2800 void forward(); void backward(); void turnleft(); void turnright(); void Stop(); int m1p1 = 6; int m1p2 = 7; int m2p1 = 8; int m2p2 = 9; int led = 13; int number = 0, value = 0; void setup() {   Serial.begin(9600);   sensor.enableIRIn();   pinMode(led, OUTPUT);   pinMode(m1p1, OUTPUT);   pinMode(m1p2, OUTPUT);   pinMode(m2p1, OUTPUT);   pinMode(m2p2, OUTPUT); } void loop() {   if (sensor.decode(&value1)) {     unsigned int state = value1.value;     if (state == 2...
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Clap Circuit

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   Clap Circuit with microphone using Arduino Uno You Tube:  Video Circuit: Code: int clap = 2; int led = 13; int val = 0; int valold = 0; int state = 0; void setup() {   pinMode(clap, INPUT);   pinMode(led, OUTPUT); } void loop() {   val = digitalRead(clap);      if((val == HIGH) && (valold == LOW)) {     state = 1- state;     delay(10);   }      valold = val;      if (state == 1) {     digitalWrite(led, HIGH);   }   else {     digitalWrite(led, LOW);   } }
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