The Warning Tree:
With the initial idea of the LED-lit tree, I decided to use a PIR sensor with it to give it an interactive element. I was thinking of making it have an environmental message where everything you do would affect the environment but I guess I should have used a combination of sensors alongside the PIR so that there would be different effects. 
I did the technical aspect in three steps:
- test LED strips( making sure the “breathing” effect works)
- test PIR sensor( making sure my sensor was working properly cus it’s old)
- Put the two together to make variations
For the soldering:
For the aesthetics melted plastic bags together as Galina had taught me but this time using a flat iron rather than a clothing iron. However, how to wrap it was a problem as I cannot apply direct heat on the LEDs as the LEDs might melt too. in the end, I used a hot glue gun to melt everything together .
During the presentation, it was weird because the wires were connected properly but the tree didn’t light up but when I got home and tested it again, I realized it was a problem with the USB cable I was using. It was fine when I used the power source on the Arduino itself.
Final product:
link to PIR sensor concept:
https://learn.adafruit.com/pir-passive-infrared-proximity-motion-sensor/how-pirs-work
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