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Topic: Increase volume of tone()? (Read 1 time) previous topic - next topic

TheNorm

I'm driving a piezo buzzer with the tone function and I can hardly hear the tones. I took the resister out of the circuit but it barely helped at all. Is there some fix or do I need a different buzzer?

retrolefty

Many piezo buzzers only respond to a narrow range of audio frequencies. Perhaps a small speaker and amp chip would suit your needs better?

Lefty

Onions

There are plenty of amplifier circuits on the internet. Most of them can be built very quickly, and at a low price. Check out http://www.zen22142.zen.co.uk/Circuits/Audio/audio.html for some circuits. You can then have a louder output than you'd get out of the arduino, and a wider frequency respnse, if you use a speaker.

Onions.
My website: http://www.harryrabbit.co.uk/electronics/home.html Up and running now! (Feel free to look round!) :D

TheNorm

#3
Aug 21, 2011, 03:47 am Last Edit: Aug 21, 2011, 06:46 am by TheNorm Reason: 1
I just went ahead and got buzzers with a lower voltage rating. Now I have to find the right resistance to bring the level down to what I want.  :smiley-roll:

Jack Christensen

I'd be interested to know which buzzer(s) you're using. Haven't been happy with ones I've tried so far. I'm looking for loud...
MCP79411/12 RTC ... "One Million Ohms" ATtiny kit ... available at http://www.tindie.com/stores/JChristensen/

Jack Christensen

LOLZ!  THAT'S what I'm talking about!
MCP79411/12 RTC ... "One Million Ohms" ATtiny kit ... available at http://www.tindie.com/stores/JChristensen/

TheNorm

It's actually a speaker rather than a piezo buzzer. It's larger and took some hassle to make it fit into the space available.
http://www.pololu.com/catalog/product/1261

Jack Christensen

MCP79411/12 RTC ... "One Million Ohms" ATtiny kit ... available at http://www.tindie.com/stores/JChristensen/

retrolefty


It's actually a speaker rather than a piezo buzzer. It's larger and took some hassle to make it fit into the space available.
http://www.pololu.com/catalog/product/1261



It's rated as 100 ohm speaker, you should probably wire a series 100 ohm resistor to protect the output pin. That will cut sound level in half but maybe still enough?

Lefty

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