Christmas Tree Lights - Modular and Rainbow style
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What every Christmas tree needs are LIGHTS! Inspired by pauloricca's LED Christmas tree from back in 2009, (thing 1406), it was hollowed out, a mounting hole added and a base designed to enable me to string a number of these together after fitting a colour changing LED to each one.
The LEDs are widely available - and if four of them are wired in series, the set can be powered by a standard 12V DC plug-in mains adapter. As a set of 4 LEDs will only take around a total of 120mA, a mains adapter rated at 0.5A or more will easily cope with having four sets of them in parallel which is what I have done. (Photos show just three sets in parallel).
