The results were very pleasing. It produced clicks, pops and sequenced like beeps and tones. This first one I sent back to a friend but I had a few ideas to try when I returned home.

My second "Click Box" has three switches so each multivibrator has three pitch ranges, three further switches to introduce Osc sync and two variable resistors to control sync amount. This second unit sounds the same but has more variation than original.

I have included a copy of the Novel sound generator project details. Notice at the end of page two the comment on the use of more than three multivibrators, I think this could be the next progression of the Click Box!!!