To LUGNET HomepageTo LUGNET News HomepageTo LUGNET Guide Homepage
 Help on Searching
 
Post new message to lugnet.robotics.handyboardOpen lugnet.robotics.handyboard in your NNTP NewsreaderTo LUGNET News Traffic PageSign In (Members)
 Robotics / Handy Board / 2974
  Re: Microphone and Heat Sensors
 
(...) Interesting sounding project Melissa. The trick is to distinguish the doorbell from other ambient sounds heard picked up by the microphone. One approach might be to use the LM567 PLL Frequency Detector. Its a relatively simple little 8 pin IC (...) (27 years ago, 12-Nov-97, to lugnet.robotics.handyboard)

©2005 LUGNET. All rights reserved. - hosted by steinbruch.info GbR