Monthly Archives: February 2026

Components Wiring Learn how to implement Arduino Bluetooth Control to manage LED devices effectively. Bluetooth: LED: Code #include <SoftwareSerial.h>SoftwareSerial BT(10, 11); // RX, TXint led = 7;void setup() { pinMode(led, OUTPUT); BT.begin(9600);}void loop() { if (BT.available()) { char data = BT.read(); if (data == ‘1’) { digitalWrite(led, HIGH); } else if (data == ‘0’) { […]

Components Obstacle Detection is a crucial application of ultrasonic sensors. Wiring 💻 Code int trigPin = 9;int echoPin = 10;void setup() { Serial.begin(9600); pinMode(trigPin, OUTPUT); pinMode(echoPin, INPUT);}void loop() { long duration; int distance; digitalWrite(trigPin, LOW); delayMicroseconds(2); digitalWrite(trigPin, HIGH); delayMicroseconds(10); digitalWrite(trigPin, LOW); duration = pulseIn(echoPin, HIGH); distance = duration * 0.034 / 2; Serial.print(“Distance: “); Serial.print(distance); […]

Overview The DHT sensors are made of two parts, a capacitive humidity sensor and a thermistor. There is also a very basic chip inside that does some analog to digital conversion and spits out a digital signal with the temperature and humidity. The digital signal is fairly easy to read using any microcontroller. There are […]

Now that you’ve blinked an LED, let’s build something more practical: a Motion Sensor Alarm. This project uses a PIR (Passive Infrared) sensor to detect movement and trigger a buzzer. Components Required Step 1: Wiring the Circuit PIR Sensor Pins: Buzzer: Double-check connections before powering up. Step 2: Upload the Code Open the Arduino IDE […]

The Arduino Uno r3 (DIP version) is one of the most beginner-friendly microcontroller boards, perfect for learning electronics, coding, and building simple projects. This tutorial on Getting Started with Arduino will guide you from unboxing to running your very first program. What You’ll Need Step 1: Install the Arduino IDE To program the Arduino, you […]