A custom PCB that allows any wired audio device to be used wirelessly — Bluetooth Classic (A2DP) and AirPlay, powered by a rechargeable LiPo battery.
This is my first PCB design, so feedback on power sequencing, decoupling, RF placement, or anything else is very welcome.
| Part | Role |
|---|---|
| ESP32-WROOM-32D | WiFi + Bluetooth Classic + main logic |
| WM8960 | DAC + ADC + integrated headphone amp |
| TP4056 | USB-C LiPo charging + protection |
| AP2112K-3.3 | 3.3V LDO regulator |
| LiPo battery | Power source |
🚧 Work in progress — schematic and PCB layout done, first prototype not yet assembled/tested.