Mh-mx8 Wireless Bluetooth Audio Module M28 Mp3 Dual Channel Stereo Player

Product Introduction:

This product MH-M18/M28/M38 is a low-power Bluetooth design solution that supports new Bluetooth 4.2 transmission and lossless stereo playback.
After the module is connected to Bluetooth, it can quickly achieve Bluetooth wireless transmission, which is very convenient. In an open environment,
the Bluetooth connection distance can reach up to 20 meters.
Widely used in various Bluetooth audio receivers, DIY modification of various audio systems, etc

Function Description:

1. Bluetooth V4.2 version, supports Bluetooth automatic reconnection technology, supports WAV/WMA/FLAC/APE/MP3 lossless
Decoding, stereo dual channel output
2. After the module is powered on, the phone searches for the Bluetooth name MH-M18/MH-M28/MH-M38 and connects to Bluetooth
Afterwards, music can be played;
3. Blue indicator light for module:
When Bluetooth is not connected, the indicator light flashes rapidly;
When Bluetooth is connected, the indicator light stays on;
When Bluetooth is playing, the indicator light flashes slowly.

MH-M28:

 

 

1. Power supply: You can directly use the MICROUSB Android cable 5V for power supply, or connect it to a 5V power supply
or 3.7V lithium battery separately. Note that the power supply interfaces for 5V and 3.7V are different. The 5V voltage is connected to 5V 
and GND, while the 3.7V lithium battery is connected to VBAT and GND.
2. Audio output: The headphones can be directly connected to the 3.5mm audio interface, 
or wired for audio input on the amplifier board (interface L/R/AGND can be directly wired).


·Precautions

1. Signal interference: Bluetooth antennas are extremely susceptible to high-frequency or strong electromagnetic signal interference, so try to place them away from the transmitter
as much as possibleA place to send wireless and other devices. And the board should not be in close proximity to metal objects, maintaining a certain distance.
2. If there is a current sound when connecting to the power amplifier board, it is caused by ground wire interference. It is recommended that the output end of the Bluetooth module 
should not be plugged in, and must be soldered, especially for the ground wire. The wire should not be too long, the shorter the better, and it should be thicker as much as possible. 
The issue of the audio ground being connected to the grounding point of the amplifier board requires it to be connected to the ground at the audio input end of the amplifier. 
This grounding point can be welded at different positions to achieve the desired current and sound. Suggest separate power supply for Bluetooth and amplifier board, isolating 
Bluetooth ground and amplifier ground.
3. Due to the bare board design of this product, try not to touch the components on the board with your hands as it may cause static electricity
The dead chip caused burning.


Warning: The charging interface of this product is limited to current charging mode and does not come with charging management! 
For the safety of your life and property, please be sure to use lithium batteries with protective plates produced by legitimate manufacturers.
 If any losses are caused due to improper use, our company will not be held responsible!