GeekDad is running an awesome competition to see what everybody can make using parts from SparkFun and Ponoko. My Nixie Sudoku uses many parts from SparkFun and a custom case from Ponoko, but unfortunately neither company sells nixie tubes (yet). So I decided to redesign the game using 7-segment LEDs instead. Presenting the 7 SEGDOKU concept.
Just multiply by 9, add 2 potentiometers, 1 keypad, 1 Arduino, and 1 custom case.
And you have a fun, inexpensive, easy to build, easy to program, easy to play game for the whole family! Check out the board, schematic, and case design here.