Circuit Diagram Keypad Lock

-




 

Comments

Post a Comment

Popular posts from this blog

Arduino Code Car Parking System

-
 // Created by Simple Circuits  #include <Wire.h>  #include <LiquidCrystal_I2C.h> LiquidCrystal_I2C lcd(0x27,16,2);    #include <Servo.h>  Servo myservo; int IR1 = 2; int IR2 = 3; int Slot = 4;           //Total number of parking Slots int flag1 = 0; int flag2 = 0; void setup() {   Serial.begin(9600);      lcd.init(); //initialize the lcd     lcd.backlight(); //open the backlight     pinMode(IR1, INPUT); pinMode(IR2, INPUT);    myservo.attach(4); myservo.write(100); lcd.setCursor (0,0); lcd.print("     ARDUINO    "); lcd.setCursor (0,1); lcd.print(" PARKING SYSTEM "); delay (2000); lcd.clear();   } void loop(){  if(digitalRead (IR1) == LOW && flag1==0){ if(Slot>0){flag1=1; if(flag2==0){myservo.write(0); Slot = Slot-1;} }else{ lcd.setCursor (0,0); lcd.print("    SORRY :(    ");   lcd.setCursor (0,1); lcd.print("  Parking Full  ");  delay (3000); lcd.clear();  } } if(digitalRead (IR2) == LOW && flag2==0){flag2=1
Read more

Arduino Code

-
 //define Pins #include <Servo.h> Servo servo; int trigPin = 11; int echoPin = 12; // defines variables long duration; int distance; void setup()  {   servo.attach(13);   servo.write(180);  delay(2000);    // Sets the trigPin as an Output pinMode(trigPin, OUTPUT); // Sets the echoPin as an Input  pinMode(echoPin, INPUT); } void loop()  { // Clears the trigPin digitalWrite(trigPin, LOW); delayMicroseconds(2); // Sets the trigPin on HIGH state for 10 micro seconds digitalWrite(trigPin, HIGH); delayMicroseconds(10); digitalWrite(trigPin, LOW); // Reads the echoPin, returns the sound wave travel time in microseconds duration = pulseIn(echoPin, HIGH); // Calculating the distance distance= duration*0.034/2; // Prints the distance on the Serial Monitor Serial.print("Distance: "); Serial.println(distance); if ( distance <= 25   ) // Change Distance according to Ultrasonic Sensor Placement  { servo.write(180); delay(3000);  }  else  { servo.write(90);  } }
Read more