Simple Circuits

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...