[Simoninns] is hoping to compete in the Sparkfun Microcontroller Contest with this cool little Microsimon instructible. The parts list is pretty small, at around 20 components. At the heart is a PIC 12F683 microcontroller. The whole project is very well documented with schematics, PCB layouts, code, and great pictures. This is a great project that you could put together really quickly and is a perfect introduction to charlieplexing. We find that, especially when teaching a new person, games are often a good project to learn from. The interactive and competitive nature of the finished product usually keeps people interested a little longer. You can catch a video of it after the break.


  1. i like it, especially because it is in SMT :)

  2. Phil says:

    I know you want to earn a bit of money for your work. But PLEASE WHY DO YOU HAVE TO MAKE THOSE ADS? http://pagead2.googlesyndication.com/pagead/imgad?id=CIixmIGeou7pGhCsAhj6ATIIg_z_2MoGYRA THX

  3. Gdogg says:

    Awesome. I have a few (DIP) 12f683s, so I might breadboard this for fun. He did EVERYTHING well, from writeup, board, coding, and design. Very impressed.

  4. Mike Bradley says:

    I like it, especialy the hacks for the buttons and the leds. 4 ins 4 outs with 4 pins, great work!

  5. Rob says:

    What’s that round thing next to it?

  6. robin says:

    the soldering looks kinda crappy imho…
    too much solder and too long heated mistakes are obvious…
    but points for etching your own board.
    Next time though leave more copper (because then you etch away less copper and can reuse your etching solution more often..)

    looks like fun maybe I’ll build it.
    sorry to be so negative, not meant as such, hopefully usable as constructive criticism.

  7. Gdogg says:

    Serious question? It’s a 1 Euro coin

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