Breakout Board for Electret Microphone

Forum 2005-2010 (read only) Hardware Interfacing
1

Hi Guys,

sorry for this plane question, but is it actually possible to conect a Electret Mic without any capacitors etc. to the input of the arduino just to read out if there is any signal or if there is none?
Or does it work with the Breakout Board for Electret Microphone like that:

800×600 117 KB

Thanks!

2

no
electret microphones need some polarization that why you need a capacitor
electret microphones outputs a very very low signal (around a mV) so you need some amplification
The microphone on the picture looks like the BOB08669 SparkFun Electret Microphone Breakout - BOB-12758 - SparkFun Electronics from Sparkfun. I personnaly own one which works perfectly.

3

And this microphone-board from sparkfun can be attached just liek that to the 5V, Gnd and then analog in?

4

Yes
There are 3 pads:

  • +5V connected to +5V on Arduino
  • GND connected to GND on Arduino
  • analog out connected to any analog input on Arduino