Introducing IllyClock – alarm clock in a coffee can

Davide GombaFebruary 5th, 2010
“The electronics is based on Wiseduino (Arduino clone with DS1307 real time clock on board), with a LED matrix shield sitting on top. The shield is built with 74HC595 shift registers that drive two bi-color (red, green, and orange by subtraction) 8×8 LED matrices.
The clock uses a rotary encoder with button as the only user input.
The functionality is simple and intuitive:
  • time is shown as hour and minutes;
  • clicking the button will show, using the symbol of a bell, the state of the alarm (enabled or disabled);
  • double clicking the button will show the alarm time and allow the user to set the alarm hour and alarm minutes (toggle between the two by clicking the button); increment the numbers by rotating the knob;
  • holding down the button will allow the user to set the time;
And here is an original feature: three hours before the alarm will sound, the time is shown in orange; one hour before the alarm will sound, the time is shown in red. So just by squinting at the clock, one can realize how much longer one can sleep.”
via TimeWithArduino

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