That’s right, these parking sensors are powered by an Arduino board, and the only extra components that were used in the project are a HC SR04 ultrasonic sensor, an active buzzer, and jumper wires.

To measure wind speed and direction, most people turn the traditional cup anemometer and wind vane. Another less-known method is to use an array of ultrasonic transducers, which doesn’t need … ...

Arduino Parking Lot Attendant. 25 Comments . by: Mike Szczys. October 15, 2012. Title: Copy. ... You could use a magnetic sensor as the cars are all metal and you could detect the eddy currents.

Super-Cheap Parking Sensors Built at Home with an Arduino This Arduino-Powered Self-Driving RC Car Is a Reminder the Future Looks Good Old Volvo Gets Comfort Blinkers with Arduino-Powered Hack ...