Features

• Sipeed Longan Nano: 128KB Flash/32KB SRAM
• ES9023 24bit I2S Audio DAC
• exFAT MicroSD (up to 512GB)
• 44.1KHz 16bit Stereo WAV File
• Tag information by LIST chunk in WAV File
• Cover Art display by RGB565 binary format file
• Folder/File navigation by ASCII order
• Control by Android Headphone button (3 buttons)
• Volume by utilizing DAC 24bit range for playing 16bit Audio data
• Album unit random play by time out after play finish (Assuming [Artist Folder]/[Album Folder] structure)
• Resume playback
• Battery voltage check (Optional: external circuit needed)