Objective:          To measure the distance of the object present Components Required Arduino Uno Ultrasound Sensor Connection Diagram Program int trigPin = 2, echoPin = 3; long duration; int distance; void setup() { pinMode(trigPin, OUTPUT); pinMode(echoPin, INPUT); Serial.begin(9600); } void loop() { digitalWrite(trigPin, LOW); delayMicroseconds(2); digitalWrite(trigPin, HIGH); delayMicroseconds(10); digitalWrite(trigPin, LOW); duration = pulseIn(echoPin, HIGH); distance= […]

Objective:          To display the messages through LCD display Components Required Arduino Uno Liquid Crystal Display (LCD) Connection Diagram Program #include <LiquidCrystal_I2C.h> LiquidCrystal_I2C lcd(0x27, 16, 2); void setup() { lcd.begin(); lcd.print(“Hello World”); } void loop() { } Working          The LCD displays the characters based on allowing / blocking the light intensities by changing the […]

Objective:          To Control (ON/ OFF) the devices connected in the AC supplies (230 V) Components Required Arduino Uno Relay Module   Connection Diagram Program int RelayPin=13; void setup() { pinMode(RelayPin, OUTPUT); } void loop() { digitalWrite(RelayPin, HIGH); delay(1000); digitalWrite(RelayPin, LOW); delay(1000); } Working          The Relay operates as Electrical Controlled switch. It has input […]

Objective:          To detect the Light Intensity using LDR Sensor Components Required Arduino Uno Light Dependent Resistor (LDR) Sensor Resistance (1K Ohm) Connection Diagram Program void setup() { Serial.begin(9600); } void loop() { int sensorValue = analogRead(A0); Serial.print(“Light Intensity is :”); Serial.print(sensorValue); } Working          The output of the LDR sensor is accessed by the […]

Objective:          To detect the objects using IR sensor. Components Required Arduino Uno Infra Red Sensor Connection Diagram Program int sensorPin = 3; int sensorValue = 0; void setup() { pinMode(sensorPin, INPUT); Serial.begin(9600); } void loop() { sensorValue = digitalRead(sensorPin); if(sensorValue==HIGH) { Serial.println(“Object Detected”); } else { Serial.println(“Object not Detected”); } } Working          The […]

Objective:          To activate the Buzzer in order to make sound for alert Components Required Arduino Uno Piezo Electric Buzzer  Connection Diagram Program int Buzzpin=13; void setup() { pinMode(Buzzpin, OUTPUT); } void loop() { digitalWrite(Buzzpin, HIGH); delay(1000); digitalWrite(Buzzpin, LOW); delay(1000); } Working          The Program Activates the Buzzer to ON by supplying HIGH voltage to […]

LED Blink Objective:          To activate the in-built LED available in the Arduino Uno Board Components Required Arduino Uno LED Resistance (100 Ohm) Connection Diagram Procedure Give the Connection as per the Connection Diagram Connect the Arduino with the PC / Laptop Go to the “Tools” and click “Port” tab and Click the COM port […]