Picture of Customizable Holiday Display
I made this instructable for the Instructables Advent Calendar. I hope it adds some fun to your waiting time for Christmas.

This display is highly customizable. I used a mini breadboard instead of a solid circuit board to give you the ability to customize the behavior of the LED by changing the components around the NE555. So this display is not only beautiful - its also educational. Learn about the timer IC NE555 by playing with your "Customizable Holiday Display"!

I added a small contest. Win a 1 year pro membership with your own circuit! See step 4 for more information.

Step 1: Parts and Tools

Picture of Parts and Tools
Here is what you need:
  • Altoids tin
  • spray paint
  • mini breadboard
  • some wire
  • 9V battery+ battery clip
  • NE555
  • wire
  • black paper
  • translucent paper
for the "default mode":
  • 1 resistor 33k
  • 1 resistor 330 ohm
  • 1 capacitor 100uF
  • 1 transistor BC547
  • 1 LED yellow
for customizations:
  • various resistors
  • various capacitors
  • various LEDs
  • various transistors
  • ....no limit in creativity!
  • knife
  • wire cutter
  • credit card sized plastic card
  • pen
  • scissors
  • paper cutter
Robot Lover3 years ago
Cool! I might try this (with an ATtiny85).
mischka (author)  Robot Lover3 years ago
Its a great idea to use a µC for that. I am very curious about your circuit!
Here is mine. It's kinda lame. I didn't have any orange or yellow LEDs so I made a tree.

mischka (author)  Robot Lover3 years ago
Thanks for sharing. Would you also post the circuit and the code for the µC?
I will post a few pictures of it in an hour or two.
canucksgirl3 years ago
Very cool entry to the Advent Calendar.
A contest within a contest is an original idea too :)
mischka (author)  canucksgirl3 years ago
Thank you!