Ports
| Device | Port | Connected to |
|---|---|---|
| VS1053 | CS | 16 |
| VS1053 | MISO | 19 |
| VS1053 | MOSI | 23 |
| VS1053 | SCK | 18 |
| VS1053 | XCS | 4 |
| VS1053 | XRESET | 0 |
| VS1053 | XDCS | 2 |
| VS1053 | DREQ | 15 |
| RC522 | SDA | 17 |
| RC522 | SCK | 18 |
| RC522 | MOSI | 23 |
| RC522 | MISO | 19 |
| AMP_L | SD | 27 |
| AMP_R | SD | 26 |
| BTN_PREV | 22 | |
| BTN_NEXT | 33 | |
| BTN_VOL_UP | 21 | |
| BTN_VOL_DOWN | 32 |
Buttons pull to GND if pushed -> Internal Pull-Up needed!