Description
This voice playback module is designed for embedded systems that require clear, programmable audio output triggered via serial commands. Suitable for use in industrial automation, weighing systems, retail devices, and assistive solutions, it offers flexible control, onboard audio storage, and built-in amplification—all without needing to remove or reprogram hardware externally.
Key Features
- Serial-controlled voice playback with customizable audio
- In-circuit update and configuration via companion app
- Built-in 3W stereo amplifier for direct speaker output
- Busy signal output for playback status monitoring
- Supports stable-data logic for noisy or continuous serial streams
Specifications
- Microcontroller: MG82F6D17 (48 MHz, 8051-based)
- Flash Storage: W25Q128 (16 MB SPI)
- Audio Format: 8-bit PCM, 8 kHz sampling rate
- Audio Duration: Up to 33 minutes (mono)
- Output Method: 128 kHz PWM audio, amplified by PAM8403 (3W stereo)
- Control Interface: UART (TTL level, configurable baud rate)
- Indicators: Busy signal output (digital)
- Power Supply: 5 V DC
- Flashing Method: UART-based app for file and setting updates
Applications
- Audible feedback in weigh scale systems
- Voice prompts in industrial automation
- Retail announcements and alerts
- Access control systems with voice confirmation
- Custom embedded devices needing serial-based voice output