Qbert whistle is my final version (so far). I have made lots of whistles now and these are 3 of them. I am 10 and thought it would be cool to enter the contest. I hope I at least get into one of the runner ups but if not, I had fun doing this so its O.K.

We tried V2 and the Qbert whistle measuring the decibels with an iphone app and it measured 102 decibels. Watch out, it hurt my dads ears!!! :O