Do you enjoy soldering and coding? Here's a pair of fun little Christmas trees solder kits that I have designed using "RGB" LEDs. After soldering, you can connect them to a Raspberry Pi and program to flash festive light patterns to your heart's desire!
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How do I program my Raspberry Pi / micro:bit / Codebug?
Programming is easy: the tree be programmed using Python or any language that support these LEDs.
How do I connect the tree to my Pi
The Rapsberry Pi version has a header that connects to pins 1 to 12 of the GPIO pins.
Is the tree tricky to solder?
Not especially but each of the LEDs has four legs which are a little close together. It might be a good idea to have an experienced solderer supervising in case it gets a little tricky. Here is a close-up of the board which shows the LED legs:
What LEDs does this tree use?
The final version of the tree will use either PL9823 or APA106 LEDs, both of which are very similar in functionality to the WS2812b LEDs except that they come in hobbyist-friendly through-hole packages! There is one other key difference: the Red and Green components are swapped compared to the WS2812b so you just need to bear that in mind when writing your code.
A word of warning about these LEDs...
...they can be exceptionally bright! Please don't run them at full brightness and look directly at them.