Will the HC-SR04 work for this??

Other Hardware Sensors
1

Hi guys, I'm kind of a newbie here just waiting for my Arduino Uno to arrive, and with the idea to use it to solve a problem. I got a bowling lane, and i got to check when the ball passes a certain point, so I figured as the lane is 1.2 meters with gutters I can put something to bounce back on the other end of the wide of the lane and just check when the distance changes for detecting the object, will this work fine?

2

Probably not if the ball is moving. I would use a photodiode or phototransistor.

3

And if i put it on a loop to check the measurement every 100ms? shouldn't that on the millisecond the object is passing be detected as the distance will change?

Thanks.

Edit: Probably will check it anyways using the Ping Library.

4

I think that will not work correctly. Ball have an angle, it is hard to say how signal reflects from that ball. You can set your sensor to specific distance, if that ball crosses specific distance you have trigger. That could work I think.