Picaxe Digital LED Guitar Clock


The Picaxe LED Guitar clock is based on a Picaxe 20M2 microcontroller and DS3231 Real Time Clock chip. It reads the time stored in the RTC and display it on a 7 segment display made up of individual LEDs. The project makes use of 6 74HC595 serial to parallel shift registers to save on I/O pins, one for each 7 segment digit. The entire circuit is housed inside an acoustic guitar casing. It has 3 push button switches, one to enter time set mode, and the other two for incrementing, decrementing the hours/minutes/seconds. The clock also has an AM/PM LED indicator.
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