Simple Circuits

Smart Garage Door Opener Using Arduino Smart Garage Door Opener Using Arduino This project creates an automated garage door system controlled via Bluetooth from your smartphone. The system uses two servo motors to open/close the door, with LED lighting that fades in/out during operation - all housed in a custom 3D printed enclosure. How the System Works Two SG90 servo motors work in tandem to open/close the garage door HC-05 Bluetooth module enables wireless control from a smartphone app When opening: Servos move 120° in opposite directions (0→120 and 120→0) When closing: Servos reverse their movement with different speed settings LED light fades in gradually when door opens completely LED fades out slowly when door closes (after 5 second delay) 7.4V battery powers the entire system with capacitor for voltage stabilization ...

Automatic Street Light Project Using Arduino Automatic Street Light Project Using Arduino This project creates an energy-efficient street light system that automatically illuminates LED lights sequentially when a vehicle is detected by IR sensors. The lights turn on in the direction of vehicle movement and turn off after the vehicle passes. How the System Works Two IR sensors are placed at opposite ends of the street light setup When a vehicle triggers the first sensor, LEDs light up sequentially from that side Each LED turns on with a 500ms delay, creating a smooth lighting effect As the vehicle passes the second sensor, LEDs turn off sequentially The same process works in reverse when a vehicle approaches from opposite direction System maintains lights for 2 seconds after vehicle detection for safety Materials Required Ardui...

DIY Rotating Product Display Stand Using Arduino DIY Rotating Product Display Stand Using Arduino This project demonstrates how to build a smooth-rotating product display stand using an Arduino and a 28BYJ-48 stepper motor. Perfect for product photography, exhibitions, or retail displays, this system provides continuous, adjustable rotation to showcase items from all angles. How the System Works The rotating display uses a 28BYJ-48 stepper motor controlled by an Arduino through direct GPIO pin manipulation. The system features: Precise stepper motor control without additional libraries Adjustable rotation speed through delay timing Power-saving design that cuts power when not rotating Simple, efficient code that's easy to modify Compact design using minimal components Materials...

Car Speed Detector Using Arduino Car Speed Detector Using Arduino This project demonstrates a car speed detection system using Arduino UNO , IR sensors , 16x2 LCD with I2C , buzzer , and basic components. It calculates vehicle speed by measuring the time taken to pass between two sensors and alerts if the speed exceeds the limit. How the System Works Two IR sensors are placed 20 cm apart on a simulated road setup When a vehicle passes the first sensor, a timer starts The timer stops when the vehicle passes the second sensor Speed is calculated using the formula: Speed = Distance / Time The system scales the measurement to simulate a 5-meter distance for practical application Speed is converted to km/h and displayed on the LCD If speed exceeds 50 km/h, the buzzer sounds and displays "Over Speeding" For normal...

Car Parking System Using Arduino and Ultrasonic Sensor Car Parking System Using Arduino and Ultrasonic Sensor This project demonstrates a car parking system using Arduino UNO , ultrasonic sensors , SG90 servo motor , 16x2 LCD with I2C , and basic components. It automatically manages gate control and parking slot tracking using ultrasonic sensing. How the System Works When a car approaches the entry point, Ultrasonic Sensor 1 detects it. If parking slots are available, the servo motor opens the gate , allowing entry. After the vehicle passes through Ultrasonic Sensor 2 , the gate closes, and the available slot count is reduced . This process continues until the parking is full. At the time of exit, the vehicle is detected first by Sensor 2 , triggering the gate to open . After passing Sensor 1 , the gate closes , and the slot count is i...

RFID-Based Car Parking System Using Arduino RFID-Based Car Parking System Using Arduino This project involves designing an RFID-based car parking system using Arduino UNO , RFID module , IR sensors , 16x2 LCD with I2C , MG90S servo motor , and other essential components. The system automates the entry and exit process for vehicles using RFID authentication. How the System Works When a vehicle reaches the entrance, IR Sensor 1 is triggered. The LCD display prompts the driver to scan an RFID card . If the scanned card is registered , the servo motor opens the gate , allowing entry. If the card is not registered , the LCD will display "Access Denied" and the gate remains closed. After the vehicle passes through IR Sensor 2 , the gate automatically closes after 2 seconds . The system manages four parking slots , but this can be...