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The JQ6500 is a small SMD sound board that plays MP3 files from 16MB of onboard flash. It holds several audio clips and triggers them over UART serial from an Arduino, ESP32 or Raspberry Pi, with up to 5 channels for independent sounds. It suits makers adding voice prompts, alarms or sound effects to a project. Against SD-card players like the DFPlayer Mini it trades removable storage for fixed onboard memory and simpler file loading over USB, but it has no card slot and no built-in amplifier, so you pair it with one.
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Owners of the JQ6500 describe it as a cheap, reliable way to add triggered audio to microcontroller projects. They like the USB file loading and serial control, and complain about the fixed 16MB memory and the need for an external amplifier.
The JQ6500 is a compact MP3 audio module, also called a sound board, with 16MB of onboard flash storage. Audio is stored on the module, so no external memory card is needed. It supports 5-channel playback and plays MP3 files.
Connect the module to a computer by USB, and it appears as a standard USB mass storage device. Drag and drop MP3 files onto it. No special software or programmer is required.
A microcontroller controls playback with UART serial commands. The module works with Arduino, ESP8266, ESP32, Raspberry Pi, STM32 and other microcontrollers that support serial communication. Community libraries are available. Its small SMD (surface mount) design suits embedding in enclosures, panels and custom PCBs.