Amplifier bluetooth 5v bass. Bluetooth module for audio transmission. Chinese goods wholesale

Many people have old musical centers at home. Once they were in demand, but today they are useless rubbish. It's a pity to throw it away, but no one will use such a miracle of technology. In this episode, YouTube blogger Edik Lomov talks about how to make it modern and stylish music bluetooth player.

Required details

All you need from the music player is the speakers. The center console is no longer needed. You will also need to purchase an audio amplifier for a turntable with a function. Its cost is $ 14. The cheapest in this Chinese store. In the search on the site write Bluetooth 4.0 TDA7492P.

It can be powered using a 12 volt power supply, current is about 3 amperes. For example, you can use a block from an old portable TV. You need to purchase 8 cap nuts in the store. A metal handle can be used from the cabinet.

Making a bluetooth player

Before starting work, you must turn the two small switches down. The power plug must be unsoldered and their consequences place it behind the speaker. You need to solder the wires to this place.

We disassemble the column. On the back, we make holes for the diameter of the plug. In the case, you need to drill mirrored holes and bring the wires from the speaker inward so that they are not visible.

Now we carefully glue the columns together. In addition, you can strengthen them with self-tapping screws. We disconnect the wires from the speakers and glue the mini-player and the power input inside the speaker. You can fix it with a welding glue gun.

Can be given a more modern shape music player... First, you need to seal the places with masking tape, some should not be painted. Next, apply paint in a suitable color. When the paint is dry, peel off the masking tape.

We drill a hole for the handle and fix it. Collecting the speakers. The final step remains. We glue the cap nuts to give the product brutality.

The player is ready. It remains to check it in action. We turn on Bluetooth on the smartphone and send music to the Bluetooth player.

Conclusion

If you believe the instructions received with the amplifier, then the board gives out 50 watts for each speaker. Indeed, the sound is very powerful. Such a turntable will be an excellent device for use at home parties, as it produces loud sound and is easy to use.

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As an UMZCH, I used a stereo ULF of 20 watts per channel, which costs $ 20 on ebay. You need to disassemble it and inspect the inside of the case in order to understand where to get the power from the module and where, in fact, to place it. When everything is unscrewed, the amplifier looks like this.

Now about the bluetooth audio transmitter. It is bought ready-made.

All together - adapter and stabilizer, costs less than $ 8.

Disassembled Bluetooth audio receiver is shown in the photo. Connect 3 wires to the audio jack.

Now solder the wires from the USB cigarette lighter - charger.

They are both designed to be powered from 12 V. If the amplifier operates even from 24 V, it is still suitable. But if the amplifier operates from more high voltage or is powered directly from the 220 V network, you will have to take usb charger separately, or look for a reduced stabilized power supply on the board of the UMZCH itself. In general, you will figure it out yourself.

Now connect it to bluetooth receiver according to the power supply on the board, this is 5 volts. Both modules are attached to an aluminum heatsink as the most massive element of the circuit.

The input wires are directly soldered to the amplifier's line audio out, but if you want to add a powered subwoofer or something similar, you need to drill a separate 3.5mm output in the rear panel. The bluetooth receiver itself is carefully fixed to a suitable place using hot melt glue.

Any columns can be used to make wireless acoustics, the signal to which is sent from a smartphone, tablet or computer from using bluetooth... This DIY project will require:

Any stereo speakers (for example, from an old music center).
- Amplifier with built-in Bluetooth module.
- Power Supply.

The amplifier can be purchased on AliExpress or another similar site. Quality amplifiers cost from $ 10 and more, and there are models on sale that simply consist of a board, but there are cases with buttons for pairing with a sound source, controlling the volume and switching tracks. Models in cases are a little more expensive, but you do not have to cut out the case yourself and look for buttons that are suitable in size.

You will need to connect a power supply (usually 12 volts) to the amplifier, they are sold separately and are often found on Avito and other online flea markets. To drive powerful speakers, you need a power supply unit with a current of 2 or 3 amperes, and for small acoustics, 1 ampere or even less is enough.

Connect the speakers and power supply to the amplifier, press the pairing button and set wireless connection with a sound source. If everything is in order, a signal will sound indicating that it is time to turn on the music.

MP3862BT - Built-in Bluetooth module for amplifier, active speakers or radio with hands free mode buy in Master Kit. Driver, programs, circuit, reviews, instructions, do it yourself, DIY

Here you can buy Master Kit MP3862BT - Built-in Bluetooth module for amplifier, active speakers or radio with hands free mode: price, photo, DIY, do it yourself, specifications and equipment, reviews, review, instructions, driver, programs, circuit

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MP3862BT
Built-in Bluetooth module for amplifier, active speakers or radio with hands free mode

Give a second life to an old radio tape recorder or active speaker.

Are available

Allows you to wirelessly receive and play audio files in mp3, wma, ogg, etc. from a phone or smartphones and PCs using Bluetooth technology.

The device has a hands free function. Thanks to this function, the plug-in amplifier can be used as wireless headset... Using this module, you can upgrade your old audio system or radio tape recorder to the modern level. After such revision, it will serve you for many years to come. The board contains volume controllers. The module does not require application preamplifier... The module is built on the XS-3868 chip.

Specifications

Contents of delivery

• Assembled module - 1 pc.
• Instruction - 1 pc.

Preparation for operation

• Connect headphones or amplifier input to the output of the module.
• Apply 12V power, observing polarity.
• Turn on your phone and add a new one Bluetooth device"POR 1007BT".
• Play a song. Using the trimmers, set the required maximum level volume and balance.
• The check is completed with a pleasant operation.

Operating conditions

• Temperature - -15C ... + 50C pcs.
• Relative humidity - up to 95% non-condensing pcs.

Precautionary measures

• Do not exceed the maximum allowable voltage module power supply.
• Failure to comply with this requirement will result in device failure.

Questions and answers

• Hello! Will this module remember the paired device when the power is turned off, so that when it is turned on it does not require re-pairing?
  • Alexander, this module remembers the paired device, re-pairing is not required.
• Good afternoon. Can you please tell me, maybe you are making external control buttons for this module? maybe you can suggest some kind of option? I need buttons in the car, it is possible to glue the buttons on a flat surface with a third-party tape. I will be grateful to you in advance.
  • Sergey, we do not supply buttons separately. Check them out in the assortment of our partner electronshik.ru
• Good afternoon, why can't you buy this product on your website?
  • We add the hands free function to the device. We are awaiting receipt at the warehouse finished products by the middle of summer.
• Will there be an improved model of this unit. For example, I'm interested in support for new codecs. Now new processors have already appeared and almost every smartphone supports them, and the module is still on sale old. Will there be a full-fledged line-out, for example, I really need it, since the volume of the module is much lower than the fm receiver in the car radio.
  • We are waiting for the appearance of this module by the middle of summer. The module will support all known codecs and will support hands free mode.