I Want a Really Loud Pushbutton, Ideas?

Projects General Guidance
1

I'm going to be giving a presentation and I'm planning on using an Arduino to trigger parts of my demos. The one thing that I really want for it is a REALLY LOUD momentary pushbutton switch. Something that is loud enough that when I push it, the people in the back of the (small ish, think classroom) room can hear when I push it. I'm showing off somethings with latency and I want people to be able to be looking at the screen but still know when I push the button.

Ideally something that is small enough to make it easy to hold in a single hand with the Arduino and a battery.

Anyone have any thoughts?

2

A clicking sound or a beeping sound?

If clicking, use a big automotive self canceling toggle switch.
If beeping, trigger a sonalert or, piezo speaker with tone().

3

I was thinking a clicking coming from the button, but a piezo wouldn't be a bad plan B.

I'm not finding anything called a "automotive self canceling toggle switch" in my Googling. Do you have a link to where I could buy something like that?

4

Check out one of these images

5

Awesome, thanks! I'll give that one a try.

If anyone else has a specific switch that they know is loud, let me know.

6

:wink:

images.jpg

7

dog clicker

very loud. just add a switch.

8

Use a heavy duty foot switch mounted in a tin box, push it with your habd, that is very loud.

9

I bet you could make a switch out of a squeaky pet toy.

10

couple of thoughts
first, sound and speed. the people in the back will see before they hear.

if you click at the front and also had a light go off, the people in the back will see before they hear.

if you had a solenoid strike a block of wood, you would have a loud knock.

I think a horn beep would be the easiest. it could be powered by the switch without needed anything special.
you can either buy a horn or make a circuit.

11

Roughly how big is the room in 10's of meters?