Charlieplexing Kickstarter (with a Christmas Tree)

Over on Kickstarter I have just come across an interesting GPIO Christmas Tree project. Now, before you wonder why the world needs yet another GPIO Christmas tree, this one is a bit different as it uses something called Charlieplexing.

I’ll be honest and say I’d never heard of Charlieplexing before this point (multiplexing, yes). It’s a really interesting technique for getting more functionality out of a smaller number of GPIO pins. Andrew Gale, who is running the Kickstarter campaign, has an interesting video on how this technique works up on YouTube.



Andrew’s pocketmoneytronics is building up a great set of low cost interesting Raspberry Pi boards. Good stuff.
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