My LED Etch-a-Sketch is my first fully completed electronics project. When I first got into electronics I was looking for a project to start with and while browsing on Sparkfun.com I came across LED matrices and I knew I wanted to work with them. I'm not sure how the idea of an Etch-a-Sketch came about, but it seemed like a fun project a great learning opportunity.

I would like to state that during the course of this instructable I assume that the reader has a basic understanding of using AVR and programming in C. 

Step 1: Electronic Components

In order to make your LED Etch-a-Sketch you'll need:

  • ATmega328p
  • 16MHz Clock Crystal
  • 22pF Capacitor (2x)
  • 0.1uF Capacitor
  • 10k Ohm Resistor
Matrix Drivers:
  • 8x8 Common Cathode LED Matrix (4x) (Sparkfun #COM-00682)
  • 74HC595 8-bit Shift Register (4x)
  • ULN2803 Darlington Driver (4x)
  • 100 Ohm Resistor (32x)
  • Tilt Switch (2x) (Sparkfun #SEN-10289)
  • 10k Ohm Potentiometer (2x)
  • MintyBoost Kit (Sparkfun #KIT-10094)
If you want to make the device using PCBs from Eagle files found in this instructable you will need the following additional components:
  • Male Right-Angle Breakaway Headers (1x) (Digikey #A34346-40-ND)
  • Female Right Angle Receptacle (4x) (Digikey #A35044-ND)
  • 14-Pin Ribbon Cable 6" (Digikey #A4AAH-1406M-ND)
  • Female Straight Receptacle (8x) (Digikey #A26422-ND)
  • 2x3-Pin Male Header
  • 14-Pin Ribbon Cable 4" (Dgikey #360-2433-ND)
You should be able to find all the parts between Sparkfun and Digikey. I listed the product number for some items as they will be harder to find than others.
Thanks for taking the time to make a very detailed able, its Great, explained everything so it was Easy to understand..cant wait to get started ..Awsome....Thanks very much..
Great project! :) congrats!
this is awesome, thanks for the ible!!! <br>
great instructable! I'm glad you posted the whole thing! awesome idea.
I Agree
Thanks again! I'm glad you like it!

About This Instructable


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Bio: A materials scientist gone electrical engineer my hobbies include experimenting with electronics and making fun and interesting things. I rarely know what I'm doing ... More »
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