PIR sensor alarm by luk.pe

This sketch is missing a short description
<span style="display:block; text-align:center;"><iframe width="300" height="169" src="https://www.youtube.com/embed/soS_ix_Zvvo?feature=oembed" frameborder="0" allowfullscreen></iframe></span> <div align=center><b> Arduino UNO + HC-SR501 + LED + buzzer + standard LCD. </div></b>

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