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Hack-a-Sketch

Difficulty Level = 5 [What’s this?] Here is a device I call the Hack-a-Sketch. The screen is a normal laptop (an old one), but it has real knobs which control the stylus on the screen. An Arduino board reads the inputs from two potentiometers (the knobs), and...

LED Clock

Difficulty Level = 3 [What’s this?] I harvested this LED clock display from an ancient VCR and wrote an Arduino sketch to drive the display. First I experimented with the leads to understand which leads controlled what behavior. There are 4 digits on the display...