MH-MX8 M18/M28/M38 Wireless Bluetooth MP3 Audio Receiver board BLT 4.2 Mp3 lossless deer

MH-MX8 M18/M28/M38 Wireless Bluetooth MP3 Audio Receiver board BLT 4.2 Mp3 lossless deer

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Our shop sells the most popular 3C consumer electronics products,such as mobile phone accessories,computer accessories,game peripherals,smart wearables,and follow the most popular fashion trends. If you like our products,please follow us,become our follower and fan.We will provide you with the most popular products to satisfy your fashion shopping experience.Package : SMDis_customized : YesModel Number : MH-ET LIVE MH-MX8 MP3 Deer BoardOperating Temperature : 1Dissipation Power : 1Supply Voltage : 1Application : MP3/MP4 PlayerCondition : NewType : Voltage RegulatorBrand Name : EstardynOrigin : Mainland ChinaM181.?Product introductionMH-M18 is a low-power Bluetooth design solution that supports the latest Bluetooth 4.2 transmission, two-channel stereo lossless playback, and supports button control (songs, songs, pauses, volume increase and decrease, power on/off, etc.). After the module is connected to Bluetooth, Bluetooth wireless transmission can be quickly realized, which is very convenient. The module interface is a half-hole process that allows the customer to attach directly or solder to ?the?board.?In?an?open?environment,?the?Bluetooth connection?distance?can?be?up?to?20?meters.2.?SizePCB size: 23*16*2.5mm (length, width and height)Pin pitch: 2.54mm (can be directly attached or soldered)3.?Function /Pin?definition1 . The interface adopts a semi-hole process, 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 lossless deing, stereo dual channel output.PIN NOFunctionDescription1KEYButton control terminal (4 button functions, additionalresistors such as wiring diagram)2MUTEMute control terminal (output high level 3.3V when muting,output low level during playback)3VCCPositive power supply 5V (lithium battery 3.7V power supplyrequires short circuit diode)4GNDGND5LLeft channel6RRight channel3.?After the module is powered on, the mobile phone searches for the Bluetooth name MH-M18, and can play music after connecting?Bluetooth.3.4, module blue indicator light:4.When the Bluetooth is not connected, the indicator light flashes quickly; 5.When the Bluetooth connection is on, the indicator light is always on;6.The indicator light flashes slowly while Bluetooth is playing.7 . 5, MUTE mute control terminal: used to control the power amplifier board, MUTE output high level 3.3V when muting, output low level during playback.8 . 6, KEY button control: This function needs to be connected to the resistor and button to achieve. (corresponding to the resistance as shown in the wiring diagram)9 . 7, the volume power off function: the default output 100% volume. Press the button to control the volume increase and decrease. If the control volume is less than 15%, the volume output will be 15% after re-powering; if the control volume is greater than 15%, the volume will remain unchanged after power-on.4.?Application wiring?diagram5.?AtentionPower supply: The default is 5V. If you need to use a 3.7V lithium battery, you need to replace the diode (as shown) with a 0-ohm resistor of 0603, or directly short the two ends of the pad. ?The shipment defaults to 5V power supply. If the customer needs 3.7V lithium battery power supply, it can be customized in?batches.The Bluetooth audio module has a very high power requirement, which will affect the quality ofthe audio. It is recommended to add an LC filter circuit, especially a switching power supply (such as a mobile phone charger).1 . 1. Current sound: The cause is ground wire interference. It is recommended that the output of the Bluetooth module should not be plugged in. It is necessary to weld the wire, especially the ground wire, and the wire should not be too long. The shorter the better, the thicker. ?The problem of audio grounding at the grounding point of the power amplifier board must be connected to the ground of the audio input of the power amplifier. This grounding point can be tried to solder at different positions to achieve the lowest current sound. It is recommended that the Bluetooth and the power amplifier board be powered separately to isolate the Bluetooth ground and the amplifier?ground.2.3.2, signal interference: Bluetooth antenna is extremely vulnerable to high frequency or strong electromagnetic signal interference, try to place away from the place where the wireless device is sent. And the board can't be close to metal objects, keeping a certain distance.4.5 . 3. MUTE mute port: When the module is muted, the port outputs a high level of 3.3V, and outputs a low level of 0V during playback. If the power amplifier board mute high level is valid, it can be directly connected. If the power amplifier board mute is low level control, you need to ?add the reverse circuit, as shown?below:6, because this product is bare board design, try not to touch the components on the board by hand, it is easy to cause static electricity to kill the chip and cause burning.M281.?Product?introductionMH-M28?is?a?low-power?Bluetooth?design?that?supports?the?latest?Bluetooth?4.2 transmission?and?two-channel?stereo?lossless?playback.?Small?size,?convenient?and practical, Bluetooth connection can be quickly realized after the module is connected to Bluetooth, which is very convenient. In an open environment, the Bluetooth?connection?distance?can?be?up?to?20?meters.?Can?be?used?for?Bluetooth?audio reception, various audio DIY modification and so?on.2.?SizePCB size: 45*20*6.8mm (length, width and height)Pin pitch: 2.54mm (positioning hole is 3mm in diameter)3.?Function /Pin definition1. Bluetooth V4.2 version, support Bluetooth automatic connection technology, support WAV/WMA/FLAC/APE/MP3 lossless deing, stereo dual channel output.2, power supply: you can directly use the MICRO USB Android line 5V for direct power supply, you can also connect 5V power supply or 3.7V lithium battery (as shown above). Note that the 5V and 3.7V power supply interfaces are different. 5V is connected to 5V and GND, and the 3.7V lithium battery is connected to VBAT and GND.3. After the module is powered on, the mobile phone searches for the Bluetooth name MH-M28 and can play music after connecting to Bluetooth.4, module blue indicator light:5.?When the Bluetooth is not connected, the indicator light flashes?quickly;6.?When the Bluetooth is connected, the indicator light is always?on;7.?When the Bluetooth is playing, the indicator light flashes?slowly.8.?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).4.Application wiring diagram1.?Signal interference: The Bluetooth antenna is extremely susceptible to high frequency or strong electromagnetic signal interference, and it should be placed away from the place where the wireless device is sent. And the board can't be close to metal objects, keeping a certain distance.2.?If?there?is?current?sound?in?the?power?amplifier?board,?the?cause?is?caused?by?groundinterference. It is recommended that the output of the Bluetooth module should not be plugged in. It is necessary to solder the wire, especially the ground wire, and the wire should not be too long. The shorter the better. , try to be thicker. The problem of audio grounding at the grounding point of the power amplifier board must be connected to the ground of the audio input of the power amplifier. This grounding point can be tried to solder at different positions to achieve the lowest current sound. It is recommended that the Bluetooth and power amplifier boards be powered separately to isolate the Bluetooth ground and the amplifier ground.3.?because this product is bare board design, try not to touch the components on the board by hand, it is easy to cause static electricity to kill the chip and cause?burning.Warning: The charging interface of this product is in current-limitedcharging?mode,?without?charging?management!?For?the?safety?of?your?life and?property,?please?be?sure?to?use?the?lithium?battery?with?protective plate produced by the regular manufacturer. If the loss is caused by improper use, the company will not bear any responsibility!M38 1.?ProductintroductionMH-M38 is a low-power Bluetooth design that supports the latest Bluetooth 4.2 transmission and two-channel stereo lossless output. Small size, convenient and practical, the module comes with a power amplifier chip, which can be equipped with dual 5W speakers. Support USB sound card for driverless playback. In an open environment, the Bluetooth connection distance can be up to 20?meters.?Can?be?used?for?Bluetooth audio?reception,?various?audio?DIY?modification?and?so?on.2.?SizePCB size: 45*20*3.6mm (length, width and height)Pin pitch: 2.54mm (positioning hole is 3mm in diameter)3.?Function /Pin definition1. Bluetooth V4.2 version, support Bluetooth automatic connection technology, support WAV/WMA/FLAC/APE/MP3 lossless deing, stereo dual channel output.2, power supply: you can directly use the MICRO USB Android line 5V for direct power supply, you can also connect 5V power supply or 3.7V lithium battery (as shown above). Note that the 5V and 3.7V power supply interfaces are different. 5V is connected to 5V and GND, and the 3.7V lithium battery is connected to VBAT and GND.3, the maximum working current is 5V2A, it is recommended to use 5V2A regulated power supply, the sound quality is better.4. After the module is powered on, the mobile phone searches for the Bluetooth name MH-M38, and can play music after connecting to Bluetooth.5, 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.6, module blue indicator light:7.?When the Bluetooth is not connected, the indicator light flashes?quickly;8.?When the Bluetooth connection is on, the indicator light is always?on;9.?When the Bluetooth is playing, the indicator light flashes?slowly.10, audio output: output left and right channel stereo audio signal, can be connected to two 2-8 euro, 3-5W speakers, push 4 Euro 5W speakers.11, this product has its own dual 5W power amplifier circuit, you must not use another amplifier to use! The outputs of the two amplifiers may not be connected in parallel or the negative poles may be connected together, otherwise the power amplifier chip may be damaged.4.Atention1.?Signal interference: The Bluetooth antenna is extremely susceptible to high frequency or strong electromagnetic signal interference, and it should be placed away from the place where the wireless device is sent. And the board can't be close to metal objects, keeping a certain distance.2.?If there is current sound in the power amplifier board, the cause is caused by ground interference. It is recommended that the output of the Bluetooth module should not be plugged in. It is necessary to solder the wire, especially the ground wire, and the wire should not be too long. The shorter the better. , try to be thicker. The problem of audio grounding at the grounding point of the power amplifier board must be connected to the ground of the audio input of the power amplifier. This grounding point can be tried to solder at different positions to achieve the lowest current sound. It is recommended that the Bluetooth and power amplifier boards be powered separately to isolate the Bluetooth ground and the amplifier?ground.3.?because this product is bare board design, try not to touch the components on the board by hand, it is easy to cause static electricity to kill the chip and cause?burning.Warning: The charging interface of this product is in current-limitedcharging?mode,?without?charging?management!?For?the?safety?of?your?life and?property,?please?be?sure?to?use?the?lithium?battery?with?protective plate produced by the regular manufacturer. If the loss is caused by improper use, the company will not bear any responsibility!