Arduino based radar for measuring speed of an object with ultrasonic sensor (CodeWeek workshop for children).
Ultrasonic sensor is measuring distance on two time points (delayed by approx 200 ms). If object is moving, it computes its speed in km/h.
Speed is printed only if object distance from the sensor is less than 0.5 m and if object has moved for at least 1 cm. Application prints distance of an objet, if object is approaching or moving away and its speed.
- 1 x Arduino Nano
- 1 x HC-SR04 Ultrasonic distance sensor