1. μ[sic] preliminary schematic
wesley :: chris :: dave :: josh

2. :: the ideas

3. :: the ideas

4. :: basestation schematic
Data Memory
Bluetooth
DAC
User I/O
LCD

5. :: data memory & bluetooth
SPI slaves to microcontroller
two GPIO pins from micro used as slave selects

6. :: user input & (non-LCD) output
four buttons
three status indication LEDs

7. :: digital-to-analog converter
system & data clocks (SCLK, DCLK) provided by microcontroller
left/right channel selection (DSEL) from micro
data (DOUT) from micro
analog output to line level audio (HOUTR, HOUTL)

8. :: lcd control signals (RS, R/W’, E) from microcontroller
8-bit data from micro
contrast control!

9. :: pmd schematic
Bluetooth
Data Memory
Status Output

10. :: pmd power schematic Battery Charger Battery
DC-DC step up/down regulator

11. :: end