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Showing results for tags 'battery backup'.
Found this through hackaday. Sunrise Alarm Clock. Uses a G2553 (Programmed via Launchpad) Uses a DFC-77 Atomic Radiowave Time Receiver for, well, atomic time. Standard Character LCD (via a shift register) (and pwmed backlight) Settings through Pushbuttons Simple Alarm via PWM melody. 10mm LEDS to provide Sunlight (These could/should be replaced with high current 1a/3a type leds imho) And battery backup (with backup status recognition on p1.4 interrupt) via three diodes! A full featured project, though it could use better leds, and unless you are in Europe, a different cloc