Cars regularly exceed the speed limit in our street
Measure each car's speed and clearly display the speed to the driver
- Measure the time the car takes to cover a set distance (e.g. 25 meters) to calculate the speed
- For this I'd set up two sensors and calculate the difference between the timestamps recorded between the car passing the first and second sensors -> then convert into km/h
- Display the result on an LED screen
CHALLENGES & QUESTIONS
A. What sensors should I use here? Photoresistor with laser diode, digital or analog IR sensor, ...
B. How can I best cover the distance between the sensors and connect them to the Arduino? Long wire, wireless, connect two Arduinos, ...