The project utilizes a LPC1768 based microcontroller to produce an audio echo/delay effect pedal since the microcontroller has a great power to perform most signal processing in audio level.
This project combines a sand timer with a rotating mechanism and an optical beam through the center of the timer to observe the falling sand as they create a USB Hourglass.
The project utilizes a PIC16F870 microcontroller to create a function generator that would produce waveforms such as sine, triangle, square, and saw with burst sweep noise.