Bảng mạch giải mã âm thanh bluetooth 4.2 DC5V 12V 2 kênh

Note: 5V power supply direction cannot be reversed, the wrong connection will burn the board Support 32G memory card Panel function button schematic: 1. LCD display: It can display the title of Chinese and English songs, copy the songs and corresponding lyrics files into the U disk at the same time, and display the lyrics of the played songs synchronously. 2. In USB/S D mode: Short press for playback pause key/Fm radio mode: Short press for automatic search station. 3. BT/USB/S D mode: Short press is the last song, long press is the volume reduction. / Fm radio mode: Short press is the last one, long press is the volume reduction. / AUX mode: Long press is the volume reduction. 4. USB/S D mode: Short click is optional for muffler or 10 + function. (Software should set two functions before shipment.) 5. BT/USB/S D mode: Short press for the next song and long press for volume plus/Fm mode: Short press for the next song and long press for volume plus/AUX mode: Long press for volume plus. 6. REC Recording Key: Press this key during USB/S D working hours to record the voice of MIC port. The length of recording depends on the capacity of the U disk or S D card used. Press this key when playing the music U disk with recording files, it can quickly cut to the recording file for playback, so that users can quickly find the recording files. 7. USB/S D boot-up defaults to full circular playback. Press this key to switch to single circular playback. 8. MODE key: Shortly press AUX/USB/S D/BT/FM to switch between several modes. / Press this key to delete the currently playing recording file when playing the recording file. 9. EQ key: When playing USB/S D music, press this key to switch between five kinds of EQ sound effects. 10. Receiver. 11. U-disk socket, supporting dual lossless format decoding APE, FLAC, WMA, WAV, MP3, etc. 12. S D card socket, supporting dual lossless format decoding APE, FLAC, WMA, WAV, MP3, etc. Circuit board pin header function diagram: 1. Digital ground wire and analog ground wire: (when the independent transformer winding is powered, the ground wire is connected.) (when the battery box is used, the ground wire is separated.) 2. Mainboard power interface 5V, (pay attention to positive and negative poles do not connect back). 3. Left and right channel audio output. 4. AUX1 external signal input. 5. AUX2 external signal input. Package includes: 1 x Audio Decoder Board 1 x Remote Control