Touch Sticky Note using Arduino

This piano-liked thing is what I called touch sticky note. I Use a piece of sponge as the paper, and put 8 x 8 LEDs under the sponge. Whenever I touch the touch screen, the related LED will turn on, and this is how I write for the sponge. I got the idea from the traditional sticky notes. Normally, a piece of sticky note has a very short life and can only be used for one time, so I was thinking how to make a ...

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