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Ultrasonic Sensor Based Motion Detection System
Just Do Electronics
August 20, 2022
Circuit Diagram :-
Component List
1. Arduino Nano
2. 16x2 LCD Display
3. 10k Potentiometer
4. Buzzer
Code :-
// Prateek //www.prateeks.in const int trigPin = 4; const int echoPin = 5; const int buzzerPin = 6; long duration; int distance; long distancemm; void setup() { pinMode(trigPin, OUTPUT); pinMode(echoPin, INPUT); pinMode(buzzerPin, OUTPUT); Serial.begin(9600); } void loop() { digitalWrite(trigPin, LOW); delayMicroseconds(2); digitalWrite(trigPin, HIGH); delayMicroseconds(10); digitalWrite(trigPin, LOW); duration = pulseIn(echoPin, HIGH); distance= duration*0.034/2; distancemm = distance*10+30; if (distancemm <= 50) { for (int i=0; i <= 50; i++){ digitalWrite(buzzerPin, HIGH); delay(10); } } else if (distancemm >= 121) { digitalWrite(buzzerPin, LOW); } else { //digitalWrite(buzzerPin, HIGH); } // Prints the distance on the Serial Monitor Serial.print("Distance: "); Serial.println(distance); Serial.print("Distance: "); Serial.print(distancemm); Serial.println("mm"); delay(250); }
With Lcd Code :-
//Prateek //www.prateeks.in #include
#include
LiquidCrystal lcd(12, 11, 10, 9, 8, 5); #define trigPin 4 #define echoPin 5 int Buzzer = 6; void setup() { pinMode(trigPin, OUTPUT); pinMode(echoPin, INPUT); pinMode(Buzzer, OUTPUT); Serial.begin(9600); lcd.begin(16, 2); lcd.clear(); lcd.setCursor(0, 0); // column, row lcd.print(" Welcome To Our "); lcd.setCursor(0, 1); // column, row lcd.print(" Project"); delay(2000); lcd.clear(); } void loop() { long time_duration, distance_in_cm; digitalWrite(trigPin, LOW); delayMicroseconds(2); digitalWrite(trigPin, HIGH); delayMicroseconds(10); digitalWrite(trigPin, LOW); time_duration = pulseIn(echoPin, HIGH); distance_in_cm = time_duration / 29 / 2; Serial.print(distance_in_cm); Serial.println(" cm"); if (distance_in_cm <= 10) { lcd.clear(); Serial.println("Motion detected!"); lcd.setCursor(0, 0); // column, row lcd.print(" Motion Detected!"); digitalWrite(Buzzer, HIGH); delay(2000); } else { lcd.clear(); lcd.setCursor(0, 1); // column, row lcd.print("Nothing Detected!"); digitalWrite(Buzzer, LOW); } delay(500); }
Video :-
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