| PCBCUPID-NAU8325 | Arduino library for the PCBCUPID NAU8325 audio amplifier + AMP. |
| PCBCUPID_MCP79412RTC | Arduino library for the Microchip MCP79411/12 Real-Time Clock/Calendar. |
| PCBCUPID_PLAYERS | Audio player library for ESP32 with SD card, I2S output, and NAU8325 codec with amplifier control. |