I'm working on a project with some high schoolers and we want to make an audible beeeeep sound and have 3v (2 AA in series)m power supply. What do I need to get that will make this sound. I want to keep as single as possible.

12/17/2016 1:48:56 AM

by just a push button or constant sound? Do you want to minimize use of pre-built integrated circuits (chips) or just try to use basic circuit components?

Is this something you want to just build on a breadboard or do you intend to solder?

a circuit like this would do the trick:
http://www.next.gr/uploads/65/simple-tone-oscillator-generator-by-2n2222.jpg

A volume knob (which is the tone control), 2 transistors, and a speaker.

[Edited on December 17, 2016 at 2:01 AM. Reason : ]

12/17/2016 1:58:12 AM

just get a little piezoelectric audio device. they cost pennies.

12/17/2016 3:27:05 PM

555 timer

12/17/2016 5:34:05 PM

https://www.amazon.com/BQLZR-Black-Electromagnetic-Buzzer-Continuous/dp/B00J4BK0NS

12/18/2016 9:27:51 AM

Quote :

"just get a little piezoelectric audio device. they cost pennies."

This one. 100% always.

12/19/2016 10:45:11 AM