The Laser Doodler

So I’ve got a project coming up (that may have something to do with this tweet) that will require a few LED matrix displays.  I found a suitable candidate online and ordered one to play around with.  Since I already had the display, I thought it’d be fun to run it through the paces and build a little circuit out of it using some parts I had lying around.

What I came up with is the “Laser Doodler.”

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