piezo buzzer clicking noise

ghost13

I'm trying to control my piezo via direct output from my basic stamp 1 (it has worked on other projects) and now it only makes a clicking noise - no buzzing.
whatsup with this?
thanks!

PS: my code is really simple - just

HIGH 0

Franklin

If you connect it across a battery what do you get?

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- Stephen

ghost13

same thing - just clicking. and all the piezo's i've tried (I have like 4 laying around and this one is a new one) have that same problem... [noparse]:([/noparse]

and it just started really suddenly. maybe a temperature thing?

Franklin

Are you sure they are buzzers and not speakers?

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- Stephen

ghost13

http://www.parallax.com/Store/Microcontrollers/BASICStampModules/tabid/134/txtSearch/piezo/List/1/ProductID/106/Default.aspx?SortField=ProductName,ProductName

I had no idea there was a difference between a piezo buzzer and speaker. I thought any piezo = piezo. Is there anyway to make this speaker buzz from my BS1? Or better yet, actually say something smilewinkgrin

THANKS!!!!!!!

Sandgroper

Hi Ghost13,

You might be able to use the SOUND command (see the PBASIC·manual for syntax and circuit diagrams).· For instance:

' SOUND.BS1' This program generates a constant tone 25 followed by an ascending tones.' Both the tones have the same duration.' {$STAMP BS1}' {$PBASIC 1.0}SYMBOL tone = B2Main: FOR tone = 0 TO 255 SOUND 0, (25, 10, tone, 10) NEXT END

ghost13

unfortunately, that does nothing [noparse]:([/noparse]

But the sound command is awesome! I must make myself a tone generator soon..

ghost13

Okay... so it is a piezo speaker, and I only get a very faint and quiet tone. I guess I should just get a buzzer, but why is the current tone so quiet?

Also, I can only generate the tone when I check the voltage across the speaker. What's up with that???

Thanks!

Oper8r Al

Check out the WAM book. Chapter #8 deals with how to use the speaker and different things you can do with it.
You can download the book here:
www.parallax.com/Store/Books/EducationalTexts/tabid/181/CategoryID/66/List/0/Level/a/ProductID/139/Default.aspx?SortField=ProductName%2cProductName

Hope this helps

Al