Battery to USB power conversion
Converting my battery operated LED light to mains (USB) power
Blog entry discussing this: https://ralphbacon.blog/?p=195
See video #126 http://www/youtube.com/ralphbacon
(Direct link to video: https://youtu.be/0_ZCKsmc_QE)
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Right now we are holding our November & December Shopping Festival for the upcoming Christmas season.
Free prototyping for Christmas PCB until December 10th.
And there is a 2nd PCB design contest where the winner can win $1000.
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 discussed 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?
Some links below may be affiliate links (I earn commission on any sales - doesn't affect my recommendation either way)
USB breakout board (NB does NOT convert to serial, it just exposes the USB connections)
https://www.banggood.com/Micro-USB-To-Dip-Female-Socket-B-Type-Microphone-5P-Patch-To-Dip-With-Soldering-Adapter-Board-p-1165545.html?p=FQ040729393382015118&utm_campaign=25129675&utm_content=3312
When GOOD components go BAD!
My failed 9v power supply video (starts at time position 10:30)
https://youtu.be/YClCWrCs3PA?t=630
Schottky Diodes (Wikipedia) All you need to know
https://en.wikipedia.org/wiki/Schottky_diode
Assorted Diode pack (AliExpress)
https://www.aliexpress.com/item/200pcs-Fast-Switching-Schottky-Diode-Assorted-Kit-1N4001-1N4004-1N4007-1N5408-UF4007-FR207-1N5817-1N5819-1N5822/32866531235.html
Similar Diode pack from Banggood
https://www.banggood.com/200pcs-10-Values-12V-Diode-Assorted-Kit-Box-20pcs-Each-Value-1N4001-1N4002-1N4003-1N4004-1N4005-1N4006-1N4007-1N5817-1N5818-1N5819-p-1228513.html?p=FQ040729393382015118&utm_campaign=25129675&utm_content=3312
Reamer (stepped) drill (I used the thinnest one in the video)
https://www.banggood.com/3Pcs-14-Inch-Hex-Shank-HSS-Titanium-Coated-Step-Drill-Bit-Set-3-124-124-20mm-p-1003275.html?p=FQ040729393382015118&utm_campaign=25129675&utm_content=3312
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