JQ8900-Voice module expansion board

I accidentally discovered a voice module, so I drew an expansion board. It supports io and serial port control. It's very fun... The speaker can use 8 ohms and 2W.

Please see the attachment at the bottom for information

1. Module characteristics

• Support MP3, WAV hardware decoding, support FAT file system
• Support sampling (KHz):8/11.025/12/16/22.05/24/32/44.1/48
• The 24-bit DAC output uses internal DSP hardware decoding, non-PRM output, dynamic range supports 90dB, signal ratio 85dB, multiple control modes, two-line serial port mode, one-line serial port control, button mode
• Support U disk, TF card, SPIFLASH
• Support USB sound card, card reader, HID control
• Supports SPIFLASH to be simulated as a U disk, and directly updates the voice in SPIFLASH just like operating a U disk. Supports common function controls such as previous song, next song, play, pause, stop, song selection, etc.
• Supports obtaining playback track serial numbers, total tracks, and directory total tracks and other information
• Supports various information queries and easily obtains the current status of the voice chip
• Supports specified track insertion, that is, you can pause the currently playing music, play the inserted track, and return to the original track breakpoint after playing. Supports Chinese and English path insertion. In addition to specifying track insertion, it also
• Supports specified path insertion, which can be achieved by sending the insertion path
• Supports cross-disk inserts, such as insert content stored in .SPIFLASH
• Supports specified Chinese and English path playback. There is no need to know the serial number of the content to be played, just send the path directly. Supports smart combination playback, song combinations in specific folders, and sending track names
• Ready to combine.
• Support 30 levels of volume adjustment
• Supports 5 types of EQ adjustments
• Supports 7 playback mode controls, adaptable to different applications
• Supports 30 levels of volume adjustment and 5 types of EQ adjustment
• Supports 7 playback mode controls, which can be adapted to different applications. Supports cycle number setting, more applications, more user-friendly.
• Supports system deep sleep. The current after sleep is as low as 600 microamps. It can be awakened through a line string and command I0. Supports fast forward and fast rewind at specified time.
• Supports rereading within a specified time period
• Supports specifying to start playback from a specified time point
• Supports mixing of external input audio and MP3 audio, and dedicated BUSY signal output indication for switching between external input, MP3 output, external input and MP3 mixing.
• Supports the return of various status change information, such as device plug-in and other mature commands and command parsing, making the application more stable
• Dedicated supporting host computer, quick to get started, convenient for debugging, and instructions are automatically generated

(Why do I feel like I have become a seller)

2. Physical pictures