An unusual LED clock

The clock in action

This clock was based on the design by Bob Blick. The clock is a 7 LED array driven by a PIC 16F84. The entire circuit is rotated by an electric motor, which provides the horizontal scanning required to produce the dot-matrix character display.

The mechanical aspects of this project proved more challenging than the electronics. First one has to find and modify a suitable electric motor [I scavenged one from an old tape drive after dismantling several unsuitable candidates]. Once it's running, one then has to try and balance it sufficiently that it doesn't shake itself to pieces...

You can clearly see the vertical row of LEDs in this view

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