The purpose of DIY is to make a night light with as little overhead as possible. There is almost no technical content, that is, a picture is happy... good, step into the topic:
Materials required for DIY:
Advertising company eliminated white LED light board, waste network cable, empty mineral water bottle and jam bottle, crystal head, a resistor
DIY cost:
Excluding labor, less than one dollar.
DIY time required:
No more than 1 hour.
DIY steps:
First, remove a current limiting resistor from the original LED lamp board and change it to a resistor of higher power and resistance.
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