1. Tone Matrix Music Box Jun Jun PehWan Qi Choo Kian Hui Wong Chia Siong Goh

2. Project overview Project-specific success criteria Block diagram Component selection rationale Packaging design Schematic and theory of operation PCB layout Software design/development status Project completion timeline Questions / discussion

3. An 8x8 grid-based music synthesizer. Produces sound and emits light (LED) when user touches the buttons 3 music playing modes: o Sweep mode o Gravity mode o Memory mode Several different types of sound: o guitar, piano, and drum beats

4. 1. An ability to respond to touch by producing sound and emitting light. 1. An ability to memorize past note events and to play the selected tones in a sequence set by the user. 1. An ability to utilize an accelerometer to detect the inclination and direction of the device so that the pitch and tempo of music can be changed.

5. 4. An ability to load various sound effects such as guitar, piano and drum beats from the internal memory of the microcontroller and to play out the sound. 4. An ability to send the musical tones out to a computer through MIDI-USB protocol to be saved as a file.

8. I/O pins – 53 pins Operating Voltage: 1.8V - 5.5V Memory – 128K ATD channel – 3-axis accelerometer ATD Channel: 16 (12-bit) Interface - SPI, I2C, UART, USART Price: $5.14

9. 8 x 8 Button Pads o detect user's touch LCD: LCMS01604DSR o display playing modes Rotary Switch & Pushbuttons o selection of playing modes 8-bit RGB LEDS o 3-color lights

10. Accelerometer: ADXL335 o Detect tilting of device Speaker o Output from DAC SD Card o Provide additional memory Fuel Gauge: BQ26231 o 80uA active supply current o internal self discharge estimation counter

11. — Low cost — Lightweight and small size — Transparent and with good clarity — Durable and resist to scratch — Attractive

12. Dimension : 292mm H x 267mm W x 40 mm D Weight : ~4lbs (including battery) Material : 0.093" acrylic casing

14. Button pads Rotary Switch LCD Layer Buttons

16. MIDI Jack 10 mm audio jack Power Jack Power Switch

17. PIC18F67K22 8x8 button pads 64 RGB LEDs Sound system LCD display SC card MIDI Push buttons and rotary encoder Programming and Debugging Power management

18. ADC EUSART SPI I2C GPIO V DD = 1.8 – 5.5 V ENVREG connect to GND for V DD of 3.3 V. Power supply pins are connected with capacitors.

19. 1.Four concatenated Button Pads - 8 digital input pins. - 8 digital output pins. - sample the button states using GPIO pins.

20. Red:digital input pins Yellow:digital output pins

21. 2. 64 RGB LEDs - three AS1115 LED drivers - V DD of AS1115: 2.7 – 5 V - I 2 C: SDA and SCL

23. Major Subsections 3. Speakers and Audio Jack - MCP4921 12-bit DAC - LM4865 Audio Amplifier - SPI module - audio sampling rate = 44.1 kHz

24. Major Subsections 4. LCD Display - VDD of LCD: 5 V - MC14504BDG Level Translator - 74HC164 Shift Register - SPI module

25. Major Subsections 5. SD-MMC Card - VDD of card reader: 3.3 V - SPI module

26. Major Subsections 6. MIDI - VDD of MIDI: 5 V - MC14504BDG Level Translator - EUSART Module - Serial data rate = 31.25 kHz

27. Major Subsections 7. Nine Momentary Push buttons (for Control & RESET) - 9 digital input pins

28. Major Subsections 8. Rotary Encoder - 3 digital input pins

29. Major Subsections 9. 3-axis Accelerometer ADXL335 - V DD  3.3 V - 3 ADC input channels

30. 10. Programming and Debugging - PICKIT3 (through JTAG) - RS232 with MAX3232 transceivers (through EUSART) Major Subsections

31. 11. Polymer Lithium Ion Battery - Triple cell battery pack – 11.1 V - Fuel Gauge BO26231 - HDQ pins through EUSART (TX & RX) - Diode - avoid wrong connection of battery

32. 12. Two Switching Regulators - LM2675-3.3 and LM2675-5.0 - 15 V wall wart KTPS24 Major Subsections

34. Power supply – voltage regulator and battery management IC LED driver chips Audio converter Headers for off-chip components and important signals

35. Power supply away from the rest of the circuit Digital signals isolated from analog signals Wider power and ground traces I/O pins close to the board edge Heat dissipation Avoid acute angles and 90-degree turn

40. Componen ts FunctionsPERIPHERA L USED PROGRESS LCDShift out data and display on LCDSPI,IOWorking Button Pads Buttons detectionIOIn Progress Rotary Switch User interface navigationIOIn Progress LED DriverLight up LEDs using AS1115 LED driversI2CI2CIn Progress SD CardRead audio data from SD cardSPI,IOScheduled MIDIOutput audio data through MIDI port to PC's USB USARTScheduled Battery Fuel Gauge Output command bytes and Read battery status USARTScheduled DACOutput audio signal to DACSPI,IOScheduled

42. WEE K TASKDELIVERABL ES 8 Design review presentation. Tweak the PCB. Prototype parts. Design Review Presentation 9 Incorporate changes/comments from Design Review into the schematic and PCB. Prototype parts. Proof-of-Parts Final Schematics PCB Layout 10Prototype Parts & Software DevelopmentSpring Break 11Continue software development and testingSoftware Report 12Begin populating and testing PCB.Patent Liability Analysis Report

43. WEE K TASKDELIVERABL ES 13 Populating and testing PCB. Subsystems are added each at a time. Reliability and Safety Analysis Report 14 Populating and testing PCB. Subsystems are added each at a time. Start working on the packaging. Ethical and Environmental Impact Analysis Report 15Finalize packaging and system integration.User Manual 16Start assembling and editing Final Report. Create PSSC demo video. PSSC Demo Video ECE Senior Design Report 17Prepare for Final Presentation.Senior Design Presentation

44. Questions/Discussion