Csiko (1838192) writes "The ingredients in this do-it-yourself christmas project are a gyroscope built of a felt pen, a bunch of old CDs, an embedded microcontroller (MCU), some LEDs and a big portion of nerdism. While the gyroscope spins, the MCU controls the LEDs so that a writing appears in realtime. Nice project, but it definitely needs a nerd girlfried to appreciate that." Link to Original Source
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