Audio Modules
This tiny module can directly be connected to a speaker. It plays audio from a SD card. It supports proprietary AD4-Format, no MP3. The device can be controlled with connected buttons or through a SPI serial connection by a microcontroller.
| Property | Value |
|---|---|
| Chip | WTV020-SD |
| Power supply | 2.7 - 3.5 V |
| Media | Micro SD, max 1GB according to datasheet |
| Supported formats | AD4, WAV (no MP3) |
| Amplifier | 3W LM4871 on board |
| Remote control | Yes, via UART serial connection (SPI) |
| Button control | Yes |