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Motion Sensing Arduino Night Light Mother’s Day Gift

Michael shared this awesome hand built motion sensing Arduino night light that he made for Mother’s day.

A few years back I made a motion sensitive night light as a Mother’s day gift and while it worked pretty well it really chewed out the batteries.  And as with all devices that eat batteries it eventually fell out of use.  The standby current was around 4 mA due to the common LM324 opamp that was used to amplify the PIR motion sensor signal.  The original enclosure was CNC milled from a bit of re-purposed apple which had a former life as a guitar body I built as a child.  Apple happens to be my favorite wood, it’s rich and creamy and the project just needed some new electronic guts.

Really great craftsmanship on the enclosure, and I really like the choice of wood.  You can pick up a similar PIR motion sensor in the Adafruit store.


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