I want to use this Ultrasonic Sensor THIS to create a LapTimer for my RC Car.
I tried several things with IR LEDs, but this requires a setting on both sides of the track, I don't want that.
So my idea is to have the above sensor, and let it check if something passes. If so, start the timer, if again, stop it. I have the code for that, but will the sensor detect it fast enough?
- approx. speed: 20 km/h -> 5,5 m/s
- assumed "detection range" 1m (the wider the car is away the bigger it gets obviously as it has a 15 degrees angle)
- the car will be in that range for approx 0,25s
Is that enough time for the sensor to detect a difference.
Speed could be lowered a little I guess, so maximum could be 0,5s.
If that is not suitable for such a project, any other ideas that do not involve having sensors on the other side of the track?
Any hint highly appreciated.