Talking motion detector

Posted by David Husselmann on

Combining our voice recorder with a motion sensor you can easily construct a talking alarm system that will announce any motion by a sound of your liking.

Parts required

Assembly

  1. Set your power supply to 5V.  Using our breadboard power supply (pictured below) you can simply use the 5V output headers (there are two of them).
  2. Using female to female jumper leads, make the following connections:
    1. + on the motion sensor to 5V on the power supply
    2. - on the motion sensor to GND on the power supply
    3. VCC on the recorder module to 5V on the power supply
    4. GND on the recorder module to GND on the power supply
    5. SIGNAL on the motion sensor to P-E on the voice recorder
  3. Plug the speaker into the voice recorder module.
  4. Double check all connections (especially the power connections!) and ensure that your power supply is set to 5V.

Operation

  1. Power up!
  2. Hold the REC button down while making a sound (or playing a sound from your mobile phone)
  3. Moving around in front of the motion sensor will cause the voice recorder module to playback the last recorded sound.

Note that the motion sensor has a 10s reactivation delay each time motion is detected.  This means it will only return to "inactive" again after 10 seconds have passed - only then new motion can be detected.

End result


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