Presenter: Chia Siong Goh
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
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
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
Microcontroller Power Regulator Circuit Audio converter & LED driver