Best Module To Measure Speed

Other Hardware Sensors
1

Hello,

I am interested in making a radar gun, that measure the speed of something in MPH. It can measure in anything really I just need to be able to calculate it into MPH. I would be measuring things like the speed of a car or the speed of a ball.

Thanks

2

nrioux:
Hello,

I am interested in making a radar gun, that measure the speed of something in MPH. It can measure in anything really I just need to be able to calculate it into MPH. I would be measuring things like the speed of a car or the speed of a ball.

Thanks

The difference in return time between two pulses will allow you to compute the distance the item traveled in the time between the two pulses. All assuming there is a very small angle between your radar beam and the traveling object.

You are NOT measuring the speed, you are COMPUTING it.

Paul

3

Paul_KD7HB:
You are NOT measuring the speed, you are COMPUTING it.

Thanks Paul. Do you know of any modules that would work well for computing speed. Thanks

4

nrioux:
Thanks Paul. Do you know of any modules that would work well for computing speed. Thanks

You don't need to worry about computing speed until you get the radar working.

Paul

5

Paul_KD7HB:
You don't need to worry about computing speed until you get the radar working.

Thank you Paul, but what I'm asking is if you know of a radar module that I can use on arduino.

6

nrioux:
Thank you Paul, but what I'm asking is if you know of a radar module that I can use on arduino.

No clue. Only you know the parameters for your project.

Paul

7

nrioux:
...or the speed of a ball.

A metal ball...?
Leo..

8

Wawa:
A metal ball...?

Baseball

9

nrioux:
Baseball

Then you need to determine the frequency and power of the radar transmitter and the sensitivity of the receiver to bounce a signal off a baseball at the maximum distance you want to use. OR you can just get a bunch of different devices and test them.

My experience with radar and baseballs is pretty slip(none).

Paul