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    Best posts made by Vinod Amarathunga

    • RE: PIR Sensor Gives False High in 55 Minutes (Can't find a way to solve)

      After tons of research found a way to solve this issue.

      This is common for ordinary PIR sensors when we use the 5V out from Arduino. Therefore we have to separate the power for PIR and the Arduino using a Opto Coupler and some transistors to smooth the signal. Now the solution works fine.

      I am posting here to help someone stuck with same issue.![alt text](PIR Isolation.jpg image url)

      posted in Troubleshooting
      Vinod Amarathunga
      Vinod Amarathunga