Alan Parekh converted an old hard drive into a fully functional clock. It uses twelve high power LEDs to display the clock hands and a custom programmed PIC16F628 microcontroller for clock operation. Unfortunately, this creation isn’t very practical as older hard drives are quite noisy. Video and specs after the jump.
* Slot cut into upper drive platter and white tape on center drive platter provides a slot that when illuminated by the LED’s will represent a clock hand. * Minute hand is represented by blue light, hour hand is represented by red light and the second hand is represented by purple (both blue and red on at the same time). * Infrared Beam sensor and drilled index hole in lower drive platter. * Three micro switches to set hours, minutes and seconds.
[Alan Parekh – ShoutIt]