4 Buttons MP3 player with buttons, speaker and Battery Box

39.95 39.95 USD


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Skill Level : Partially Assembled

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This kit includes:

  • The MP3 player board with build in 10 Watt amplifier
  • 4 push buttons
  • a 12 watt speaker with 4 ft of wire connected.
  • battery clip to connect the 8 x AA battery holder to the board.

All that is needed is a small screwdriver to attach the wires to the MP3 board. Add 8 x AA batteries and you are good to go!

Odoo CMS - a big picture

You will also need a Micro USB Cable (not included) to load the sounds to your MP3 board. Alternatively you can play them directly from a microSD card (not included) inserted into the board. If your computer doesn't have a MicroSD card reader/writer then this inexpensive microSD USB Reader and Writer will do.

Odoo CMS - a big picture

Schematic of how to hook up the components to the MP3 board. The 9V battery clip can snap to the 8 x AA battery holder. Then connect the wires of the 9V battery clip to the MP board. Please note the ground connections for the buttons.

Odoo CMS - a big picture

Features of The FN-BC04-TB

  • High quality audio decoder which, supports MP3 and WAV audio formats.
  • 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)
  • Power Consumption: ≤10W
  • On-board flash memory size: 4MB
  • Audio format: MP3 and WAV


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. 

Features of the speaker 

  • Advanced NXT drive technology provides maximum small driver fidelity
  • Ultra compact design minimizes visual impact -- only 2.56" square x 0.81" deep
  • Drive unit design simplifies integration into a product
  • Wide sound dispersion delivers room filling sound
  • Smooth frequency response and extended bandwidth
  • 4ft. of wire soldered to the speaker

  • Nominal Diameter: 2"
  • Power Handling (RMS): 12 Watts
  • Power Handling (max): 24 Watts
  • Impedance: 8 ohms
  • Frequency Response: 150 to 16,000 Hz
  • Sensitivity: 83 dB 1W/1m
  • Voice Coil Diameter: 1"

Make this module motion activated: External PIR Motion Sensor

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  • Richard Carlson on 02/18/2018 11:28:47

    I’m building a headboard for my grandson and it will look like the front of a train. I want to use this soundboard to play various train whistles. Do you have another style of push buttons that I could mount to the back of the plywood so it would protrude through a hole to the front? This way all that would show would be the buttons.