MH-MX8 MP3 Board Bluetooth 4.2 5.0 Audio Modul

MH-M18/M28/M38 is a low-power Bluetooth design solution that supports the latest Bluetooth 4.2 transmiion, two-channel stereo lole playback, and Bluetooth wirele transmiion when the module is connected to Bluetooth, which is very convenient. In an open envment, the Bluetooth connection distance can be up to 20 meters.

Widely used in a variety of Bluetooth audio reception, a variety of audio DIY modification.

For your different needs, we offer 3 versions for you to choose from:

2..Function /Pin definition

1. Bluetooth V4.2 version, support Bluetooth automatic connection technology, support WAV/WMA/FLAC/APE/MP3 lole de, stereo dual channel output.

2. Ar the module is powered on, the mobile phone searches for the Bluetooth name MH-M18/MH-M28/MH-M38, and can play music ar connecting Bluetooth.

3, module blue indicator light:

When the Bluetooth is not connected, the indicator light flashes quickly;

When the Bluetooth connection is on, the indicator light is always on;

The following is an introduction to each version:

MH-M18:

PCB size: 23*16*2.5mm (length, width and height)

Pin pitch: 2.54mm (can be directly attached or soldered)

3. Function /Pin definition

1.The interface adopts a semi-hole proce, which is convenient for customers to directly attach or solder to the board.

2.1. Bluetooth V4.2 version, support Bluetooth automatic connection technology, support WAV/WMA/FLAC/APE/MP3 lole de, stereo dual channel output.

PIN NO

Function

Description

1

KEY

on control terminal (4 on functions, additional resistors such as wiring diagram)

2

MUTE

Mute control terminal (output high level 3.3V when muting, output low level during playback)

3

VCC

Positive power supply 5V (lithium battery 3.7V power supply requires short circuit diode)

4

GND

GND

5

L

Left channel

6

R

Right channel

PIN

Description

1

5V

5V

2

GND

GND

3

VBAT

lithium battery 3.7V power supply3.7V-4.2V

4

L

Left channel

5

R

Right channel

6

AGND

Audio GND

1. Power supply: You can directly use the MICRO USB Android cable 5V for direct power supply, or you can also connect 5V power supply or 3.7V lithium battery (as shown below). Note that the 5V and 3.7V power supply interfaces are different. The 5V voltage is connected to 5V and GND, and the 3.7V lithium battery is connected to VBAT and GND.

2. Audio output: The earphone can be directly connected to the 3.5mm audio interface, or it can be wired for the audio input of the power amplifier board (the interface L/R/AGND can be directly wired as shown).

MH-M38:

PIN

Description

1

5V

5V

2

GND

GND

3

VBAT

lithium battery 3.7V power supply3.7V-4.2V

4

L

Left channel

5

R

Right channel

1. Power supply: You can directly use the MICRO USB Android cable 5V for direct power supply, or you can also connect 5V power supply or 3.7V lithium battery (as shown below). Note that the 5V and 3.7V power supply interfaces are different. The 5V voltage is connected to 5V and GND, and the 3.7V lithium battery is connected to VBAT and GND.

The maximum operating current is 5V2A. It is recommended to use a regulated 5V2A power supply for better sound quality.

2. Support USB sound card, free drive (plug and play). Connect the module to the computer with a USB cable, and the computer can play music through the module amplifier output.

Audio output: output left and right stereo audio signals, which can be connected to two 2-8, 3-5W speakers, and 4 Euro 5W speakers.

3. This product has its own dual 5W power amplifier circuit, and must not be connected to another amplifier! The outputs of the two amplifiers may not be connected in parallel or the negative poles may be connected together, otherwise the power amplifier may be damaged.

About shipping
Shipping and Packaging All it will be double checked and well packed before sending.It will be dispatched within 2 business days ar buyers pay for the order. It usually takes about 14 to 18 working days for delivering the package to the destination(for remote areas,it may take a little longer). 

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