This week I did a LOT of soldering. First I soldered 64-ohm resistors to 23 white LEDs, and then I measured how much wire each would need to reach the end of its respective branch.



I was a dingus and accidentally soldered what I thought was the power pin (anode) on all the LEDs to the resistors, thinking that the power should be regulated more before going into the light itself.  It turns out that the anode was the cathode on the diagrams I didn’t look up before soldering, and the resistor comes after the cathode.  Oops, but two wrongs do make a right! Yay!



I labeled every branch before I sized it for wires. When the wires were cut, I taped them together with the same number label as the corresponding branch so I wouldn’t get confused.  There are three wire colors for input, and three for output.  I alternated blue, yellow, and green in that order for the power lines, so I could tell them apart when I was untangling them.  There are also three wire colors for ground because I had a packet of 6 wire colors of the same length and that’s how math works.  Unfortunately, I ran out of black and white, so the red is also ground- which may be confusing to people who are familiar with the regular color patterns of wiring.  Oh well, that’s what I had.  I did not alternate ground colors so I could tell the chunks apart as well as the individual wires.



I then soldered the lights to the wires, and the wires to a proto-breadboard that adafruit sent me for free for spending so much money with them. Yay free things? I’m glad I could use it for this project, it made things a lot easier.


I put a basic arduino code for fading lights in and out on the system, and they lit up! Yay!


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