How can I make a cheap set of sound/light buzzers that you would use in a trivia quiz to know who buzzed first?
I want to make a set of quiz buzzers so that, for example: someone asks a trivia question and two other people have a button each, both connected to a sound and/or light buzzer. The question is asked and as soon as one person hits their button and makes their buzzer and/or light come on, the other person's button then does nothing until the other person's light and/or buzzer has turned off. (Basically, only one light can be on at any one time)
I have searched various sites on how to build one of these, but they never tell you how to make it like the title of it says, they just have links on the site that let you buy their product.
If anyone has any idea on how to make this work, then I would appreciate any ideas you have.
Thanks for your time.