Pages: [1]   Go Down
Author Topic: 2 pin- electret microphone for clapper  (Read 2043 times)
0 Members and 1 Guest are viewing this topic.
Madrid, Spain
Offline Offline
Newbie
*
Karma: 0
Posts: 21
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

Hi,

Today I received my electret microphone from DigiKey (http://search.digikey.com/scripts/DkSearch/dksus.dll?WT.z_header=search_go&lang=en&site=us&keywords=CMA-4544PF-W&x=0&y=0), and I had no idea how to try it. I used the diagram that indicates in the datasheet: one pin to ground, and the other to Vcc through a resistor and to output through a condenser. I connected the output to A0 in my arduino and got no result.

Do I need an amplifier for this? I only find tutorials with 3 pin electret mics.

Thanks!
Logged

0
Offline Offline
Faraday Member
**
Karma: 13
Posts: 2857
ruggedcircuits.com
View Profile
WWW
 Bigger Bigger  Smaller Smaller  Reset Reset

You need an amplifier for this. Have a look at page 4 of our Gadget Shield schematic.

--
Beat707: MIDI drum machine / sequencer / groove-box for Arduino
Logged

0
Offline Offline
Sr. Member
****
Karma: 4
Posts: 310
Posts: 40382
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

I did a similar project. 
http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?num=1263440809/0#0
but you have to get an op amp
http://www.sparkfun.com/products/9816
Logged

Boston Suburbs
Offline Offline
God Member
*****
Karma: 14
Posts: 955
I am above your silly so-called "Laws", Mister Ohm.
View Profile
WWW
 Bigger Bigger  Smaller Smaller  Reset Reset

FWIW, I was able to get an audio sensor module off ebay recently, really nice.  Electret mic, LM386amp, gain adjust trimpot, logic level output.  I've made basically the same thing (I think I copied Sparkfun's circuit) at one time, the "sound sensor" at a couple of dollars.. worth the purchase.
Logged

When the testing is complete there will be... cake.

Madrid, Spain
Offline Offline
Newbie
*
Karma: 0
Posts: 21
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

Ok, I'll get one of those. Thanks guys!
Logged

Pages: [1]   Go Up
Jump to: