Time to ditch the batteries and run my PIR lamp from a USB power supply.
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So this rather simple project to convert my outdoor PIR lamp to mains electricity is not something I'd normally video, but I thought there might be value in it, as we discuss diodes at least!
Using one of the ubiquitous phone (USB) chargers I have lying around seemed a good use of existing resources, along with a cheap micro USB breakout board.
With just a small amount of DIY and maker skills, it was completed in a couple of (non-contiguous) days as I recovered from my eye-op.
So now I have a nice, bright LED PIR light above my workshop door so I can see where the lock is, and it runs off mains via the aforementioned phone charger - no more expensive batteries. I wonder if I could describe this as an Eco-project?
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USB breakout board (NB does NOT convert to serial, it just exposes the USB connections)
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When GOOD components go BAD! As mentioned in the video!
My failed 9v power supply video (starts at time position 10:30)
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Schottky Diodes (Wikipedia) All you need to know
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Assorted Diode pack (AliExpress)
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Similar Diode pack from Banggood
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Reamer (stepped) drill (I used the thinnest one in the video)
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