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Step 3Solder The LEDs Together
Simply solder the ends of the pins from one LED to the base of the next LED, and repeat until you have one straight chain using all the LEDs. Typically, 12 or 16 are enough for each shelf or cabinet. Make sure all the LEDs have the same polarity (longer pin on one side, shorter on the other.)
After soldering, check if the chain is straight - resolder the crooked links until the LEDs form a straight line.
Test the string with some button cell batteries or with the 3 AA/AAA battery pack.
After soldering, check if the chain is straight - resolder the crooked links until the LEDs form a straight line.
Test the string with some button cell batteries or with the 3 AA/AAA battery pack.
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as i know, it isn't nice to drive a led without a resistor...