1. Presenter: Chia Siong Goh

2.  A music synthesizer that uses the 8x8 grid of 64 buttons as its user interface to produce sound and emit light.  3 music playing modes: Sweep mode Gravity mode Memory mode  3 kinds of sound effects: guitar, piano, and drum beats

3.  Power supply – 3.3V and 5.0V  LED driver chip  Audio converter  Headers for LEDs Button pads MIDI jack Programming port Debugging LCD screen SD card R/W Accelerometer Pushbuttons

4.  Digital signals isolated from analog signals  Wider power and ground traces  Decoupling capacitors between power supply lines  I/O pins close to the board edge

5. Microcontroller Power Regulator Circuit Audio converter & LED driver