I was recently tasked with finding a solution to help a friend's young daughter with her writing. The daughter has been diagnosed with dyspraxia and it's becoming apparent that handwriting becomes difficult the faster she tries to write, so a solution needed to be found as to how to best control her writing speed.

We discussed various ideas, including having a pen that lights up when the user is writing too fast but it soon became apparent that it would be difficult to incorporate all that technology whilst retaining the slim design of the pen.
The best solution we could find was to use an Arduino to control a sequence of LEDs that run along the top of the writing paper. The sequence's speed can be controlled with the use of a potentiometer. This is how I made it.


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