Author Topic: Buzzer (Read 2663 times)

spizzak · « **on:** July 26, 2009, 08:01:16 PM »

Hey, I got this buzzer to use with one of my robots but I'm not sure it will work. When I connect it to 5V the sound it makes is barely audible. Am I doing something wrong? Is there a special way to connect it? Is it even mean for DC?

http://search.digikey.com/scripts/DkSearch/dksus.dll?lang=en&site=US&WT.mc_id=hp_go_button&KeyWords=668-1101-ND&x=&y=

wil.hamilton · « **Reply #1 on:** July 26, 2009, 08:15:53 PM »

it says it only handles 1 mA. I'm wondering if you fed it too much current and fried it?

and yes, that would work w/ dc

spizzak · « **Reply #2 on:** July 26, 2009, 09:00:03 PM »

well it still makes a sound its just very quiet.. and it wasn't like it was loud for a quick burst and then quieted

billhowl · « **Reply #3 on:** July 27, 2009, 04:26:55 AM »

In the spec it said:

Quote

Type    Piezo Transducer, External Drive
Frequency   3.8kHz
Voltage Range   1 ~ 20Vp-p
Voltage - Rated   5Vp-p

By External Drive it mean it need to drive with 3.8 KHz AC and not DC, may be you can connect it to PWM pin

spizzak · « **Reply #4 on:** July 27, 2009, 07:02:02 AM »

Any ideas on how I would do that (software-wise anyway)?

billhowl · « **Reply #5 on:** July 27, 2009, 08:03:28 AM »

spizzak · « **Reply #6 on:** July 27, 2009, 09:01:11 PM »

How do I make sure its not getting too much current?

Razor Concepts · « **Reply #7 on:** July 27, 2009, 09:25:27 PM »

It will only draw as much current as it needs as long as its at 5 volts

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