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Sunday, 2 December 2018

It's (another) Arduino Christmas.

Here's a super simple persistance-of-vision display.

Drive the neighbours mad with 8 static leds, that when they move their head, or drive past, delivers a festive message!

Ingredients.

1 Arduino board (I used a 3.3V 8MHz mini, but anything will do)
8 LED's (if using a 3.3V board, make sure you have enough voltage to light the LEDs!)
8 current limiting resistors

Connect each LED to pins 0-7 (noting 0 and 1 are RX and TX) via a current limiting resistor, and ground.

Load the code from https://github.com/andydoswell/christmas-POV

and enjoy the festive season!



And here's Stuart W's version!


6 comments:

  1. Built it. The LEDs are blinking.
    How can I correctly move the circuit to read the text.
    Me and my pupils were waving like windmills but it was nearly impossible to read the letters...

    ReplyDelete
    Replies
    1. Shake your head! Alter the delay microseconds to suit the processor and clock speed as they all seem to vary a bit!

      Delete
  2. We built it and LEDs are flashing.
    How can we make the letters visible?
    Just waving hands doesn't work for me and my students.
    Do we need a camera and long time exposure?

    ReplyDelete
    Replies
    1. Shake your head! Alter the delay microseconds to suit the processor and clock speed as they all seem to vary a bit!

      Delete
  3. Hey Andy,
    Thanks for sharing these amazing hacks for Christmas decoration, i missed these amazing tips to decorate using visible LEDs but i will surely use these on new year.

    ReplyDelete