Solderless Drawdio Terminally Implemented

So you’re stuck in a boring class and you can’t fight off the urge to hack something, even your pencil, to pass the time. Maybe you are performing a live electronics show and you drop your synth down a flight of stairs and all that you are left with is a handful of components, a screw terminal block and a pencil. There are thousands, perhaps millions of these kinds of situations and for each one the answer is the solderless drawdio clone by [Martin].

You may have seen the original Drawdio here before, a fun piece of technology that is simple enough to recreate. This latest approach would make an excellent introductory project for a hacking workshop seeing as the guide is straightforward and the lack of soldering would make logistics so much easier. The results are very similar to the original–check the video after the break.

5 thoughts on “Solderless Drawdio Terminally Implemented

  1. Site’s been down forever,but just from the picture above its a simple flop-flop circuit sans one complimentary resistor.
    The video shows that that resistor is instead wired as the pencil lead on one end and tin foil wrapped around the pencil as the other end.

  2. Sorry – it would appear my webserver is to weedy to be up to the job of being linked to from hackaday!

    @Erik, yes, it’s a simple flip-flop circuit, although not in the “textbook” configuration, the transistors are stacked up.

    I’ll try and get things back up tonight!

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