The Digital Hourglass is a new take on the traditional sand hourglass. Using computers and LEDs, the light imitate the motion of falling sand, timed precisely to amount the user and set it to.
I used acrylic slices and LEDs with a small microcontroller to simulate the idea of falling sand. The LEDs edgelight the acrylic slices, which can be adjusted to a timer as well as display the time of day.
