Dottie the Flip Dot Clock

Most of us have probably seen clocks or numerical displays that flip sequential boards to display the next number in a sequence. If you wanted to take that a step further, you could make a replica of “Dottie, For more detail: Dottie the Flip Dot Clock ...

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Dottie the Flip Dot Clock

How Dottie Was Made My trusty Arduino (it's red, a clone from Sparkfun, and it was on sale for $10) begins this journey to reverse-engineer a flip-dot board. I figure that if I can flip one single dot, using a shift register and a couple of transistors, then all I need to do is replicate that across 25 columns and 7 rows... right? Thus began numerous attempts - I think seven in total - to figure out how exa ...

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