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music visualizer
Team Members¶
Section A - Joo Won Lee
Section B - Shlok Patel
Description¶
Parts Needed¶
- One Mbed LPC1768
- Five 8-LED WS2812b WRGB LED Strips
- Sparkfun MicroSD Breakout Board
- Adafruit SPW 2430 MEMS Microphone
- Adafruit Bluefruit LE UART Friend
- Sparkfun TPA2005D1 Class D Audio Amp
- PCB Mount Speaker
Wiring¶
WS2812b WRGB LED Strips¶
These LED Strips are chained together, with the output end of one strip connected to the input side of the next strip. Additionally, a 330Ω Resistor is placed in series between mbed VOUT and LED strip 4-7VDC to prevent any issues from voltage spikes.
| mbed | LED Strips |
|---|---|
| GND | GND |
| P21 | DIN |
| VOUT (3.3v) | 4-7VDC |
| GND | GND |
MicroSD Breakout¶
| mbed | MicroSD Breakout |
|---|---|
| p8 | CS |
| p5 | DI |
| VOUT (3.3v) | VCC |
| p7 | SCK |
| GND | GND |
| p6 | DO |
| CD |
MEMS Microphone¶
| mbed | MEMS | 10uf decoupling capacitor |
|---|---|---|
| GND | GND | - |
| VU (5v) | Vin | + |
| p16 | DC |
Adafruit BLE Friend¶
| mbed | Adafruit BLE |
|---|---|
| GND | GND |
| VU (5v) | VIN (3.3-16V) |
| nc | RTS |
| GND | CTS |
| p27 (Serial RX) | TXO |
| p28 (Serial TX) | RXI |
Class D Audio Amp + Speaker¶
| mbed | TPA2005D1 | Speaker |
|---|---|---|
| GND | PWR -, IN - | |
| Vout (3.3v) or 5V | PWR + | |
| p18 | IN + | |
| OUT + | + | |
| OUT - | - | |
| pX | S |