Electronic Messages

I created a series of electronic Mad Wrapper projects a some years ago.  Most of the these projects are based on a “simple” electronic circuit that I reused and adapted for a variety of projects.  The basic principle is to use a timer circuit to sequences through the contents of a flash memory part.  The output of the memory chip would be connected to different devices.  The frequency of the clock — the heartbeat — will be different depending on the type of message you are showing.

Typically for this type of Mad Wrapping, each gift around the tree would have a preprogrammed flash part tied to it.  Each flash was unique contained a different message.  One project used a set of serial connectors as dongles — each one wired slightly differently.

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When I get a chance I will dug up my old notes and write up the instructions for some of these.

Here is a list:

  • Morse code for the layman.
  • A remote controlled car that spells out people’s initials
  • Remote controlled carAn LED persistence of vision wand that spells out names in mid air when waved around in the dark. (Possibly The Mad Wrapper’s grandest.)
  • A set of HitClips sound chips that spoke gift receiver names
  • I programmed a Timex USB DataLink watch to, after a countdown, display a person’s name depending on where the bezel was set.  Nice hacker watch.  Too bad they discontinued it.  (Not quite in the same class as the other electronic projects, but fun nonetheless.)

circuit

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