4 Buttons Triggered MP3 Player Board with 10W Amplifier and Terminal Blocks

23.95 23.95 USD


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Quantity on Hand : 121
Skill Level : Assembled and Tested
ROHS Compliant

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  • High quality audio decoder which, supports MP3 and WAV audio formats.
  • Works with most Windows, Mac, and Linux systems
  • Sampling rates supported: 8 / 11.025 / 12 / 16 / 22.05 / 24 / 32 / 44.1 / 48 (KHz).
  • 24 bit DAC output and supports dynamic range 90dB and SNR 85dB.
  • Supports one-on-one 4 button trigger control mode and RS232 serial port control mode.
  • In button control mode, it plays back 4 sounds one-on-one by negative triggering.
  • Uses microSD card and the built-in SPI flash memory as storage.
  • Built-in 4MB SPI flash memory by default.
  • Supports max. 32GB micro SD card.
  • Possible to load audio files to the flash memory directly via the micro USB port. Connecting to computer is similar to using a USB flash drive with PC.
  • Built-in mono 10 watt amplifier that can drive a 10 watt (8 ohm) speaker directly. Or  5 watt (if using 4 ohm speaker) 
  • Equipped with a 3.5mm audio jack for stereo output that can drive an earphone directly or to connect with an external amplifier.
  • Adjustable sound volume with the onboard potentiometer.
  • Wide range for power input (DC 8-24V).
  • PCB size: 52mmx49mm

Technical Parameters 

  • Working voltage: DC 8V-24V
  • Working current: ≤400mA (Input: DC12V DC)
  • Working current if playback through headphone jack only: 30mA (Input 12V DC)
  • Standby current: 10mA (Input 12V DC)
  • Power Consumption: ≤10W
  • On-board flash memory size: 4MB
  • Audio format: MP3 and WAV

Also available with buttons, battery holder and speaker

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 K1, K2, K3 and K4 are Normally Open (N.O.) manual buttons. TX port and RX port are used to connect with a MCU, through which serial commands are sent to control the module. 

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