Gear Clock : 3 Steps (with Pictures) - Instructables

Gear Clock: The heart of the clock is a PIC 16f628A microcontroller (PDF). This microcontroller has an internal oscillator however an external 20MHz crystal oscillator is being used since it will have to accurately keep track of time for weeks and months. The m…

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Gear Clock : 3 Steps (with Pictures) - Instructables

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