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bigclivedotcom | Running your LED "neon" ornaments from USB - including a total screw-up @bigclivedotcom | Uploaded July 2024 | Updated October 2024, 8 hours ago.
This video was a catalogue of disasters. I even said right at the beginning not to trust the red/black polarity marking in generic Chinese products. They literally use whatever colour of wire is available.

That said, this is a great way of saving the ongoing cost and inconvenience of using standard or rechargeable batteries. It lets you choose either the batteries or a USB power source.

You also have the option to change the LED strip to a colour of your choice, as it is widely available online. This strip is a 3V version. You also get direct 5V versions with a resistor per LED, and a 12V version too for handy off-grid illuminated ornaments.

The diode I used was a 1N4007, which is a very standard 1A 1000V diode. It's a component I think should be in everyone's universal component kit.


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Running your LED "neon" ornaments from USB - including a total screw-up @bigclivedotcom

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