CubeBox is a DIY ultra-portable wireless speaker with impressive bass and an attractive design.

Distinctive features:

• high efficiency of audio effects due to the use of 65 mm stereo speakers
• Long battery life - up to 8 hours of continuous music playback.
• Pairing is possible with any Bluetooth-compatible devices, including smartphones, MP3 players, tablets and computers.

Specifications:

• Two full range 3W stereo speakers.
• High efficiency amplifier PAM8403.
• Long lasting 5200mAh battery.
• Micro USB charging.
• Bluetooth

Speaker manufacturing

Video instructions for production

Materials and tools

We need these following parts and tools to make this Bluetooth speaker.

Materials

• Stereo amplifier module PAM8403;
• 3W stereo full range speaker – 2 pcs.;
• Micro USB charging module;
• Bluetooth module;
• 18650 li-On battery – 2 pcs;
• DC switch;
• Boost Converter;
• wires;
• Acrylic sheet 4 mm thick.

Tools

• Metal saw;
• Bor machine / Dremel (optional);
• soldering iron;
• Glue gun;
• Wire cutters and strippers;
• duct tape.
• Super glue.
• Marker.
• Crown.
• sandpaper or file

Case manufacturing

We glue the speakers using a glue gun, there is a very important point here. It is necessary to go very well along the edges with glue to ensure a tight fit to the acrylic wall.

The sequence of gluing the walls of the body.

Gluing the cut out parts of the future column can be done using quick-setting glue.

First apply superglue to the edges of the frame with the speaker speaker, then carefully position the 2-wall with the speaker and hold it a little until they are well glued.

After this, you can glue another wall.

For fixation, you can use various devices as you wish.

Soldering modules

The most interesting part of the assembly for many is the soldering of components; everything is very simple here:

First, let's connect the amplifier and Bluetooth module BT162

Turn on and heat the soldering iron.

Connect the power wires (red and black) to the amplifier, then the wires (green, yellow, blue) to the audio input, be sure to make sure the polarity is correct.

Add a power module.

Using this module, you can increase the voltage to the required 5 volts.

A blue potential meter is used to regulate the voltage. Solder 2 wires to the step up module and to the charge module.

Installation of housing components

Charge module and switch

First we glue the charge module, for this we use a glue gun. It's fast and cheap. Then glue the switch and solder the wires from the charge module to the switch.

Battery

We solder and glue together 2 18650 batteries and glue the assembly onto the wall of the rear panel. Where the charge module was placed.

Installation of main modules

First we install the voltage converter, then the remaining modules, we fasten everything in the same way using thermal glue.

After installing the components, we perform final soldering.

We solder the power wires from the step module to the switch, do not forget to check the polarity, this is very important.

Gluing the back panel.

After all the components are assembled, glue the remaining walls of the case, carefully apply glue and hold the walls until the glue sets.

Apply a generous amount of superglue to the edges first, then carefully attach the back panel and hold it in place for a bit until it is properly stuck. Finally, apply hot glue to attach the back panel more firmly.

After attaching the back panel, we solder the speaker wires to the amplifier and check everything for functionality. Final assembly.

After which you can glue the remaining parts of the body. After gluing, you can use sandpaper and a file to clean the edges of the walls from traces of glue.

That's all the instructions, I hope you liked it.

Any speakers can be made into wireless speakers, the signal to which is supplied from a smartphone, tablet or computer using Bluetooth. For this DIY project you will need:

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

The amplifier can be purchased on AliExpress or another similar site. High-quality amplifiers cost from $10 and above, and there are models on sale that simply consist of a board, and others in 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 don’t have to cut out the case yourself and look for buttons that fit the 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 with a current of 2 or 3 amperes, and for small acoustics 1 ampere or even less is enough.

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

14.02.2018

Technological progress is moving forward by leaps and bounds, now even preschoolers have a mobile phone and know how to access the Internet, and seeing a person talking to himself on the street, no one will twirl his finger at his temple - everyone is already familiar with a Bluetooth headset, which is a wireless technology. This transmitter operates using encrypted signals, which, in addition to convenience, allows you to protect personal data. The wireless module allows you to establish communication among several devices.

Many of the most modern models are already integrated, mainly to facilitate pairing with smartphones. Simply increase the distance between the audio source and the speaker and go, without having to search, enter menus, download configuration apps, or enter pairing codes.

As for the profile, the one supported by our presenter, one or the other will determine from the functions of the same sound quality that we can get. Both of them must be compatible with the same profiles to use them. It is most often used to receive audio content on headphones. . Other solutions are already there when some brands are loaded.

Bluetooth application

This device is now built into almost all cell phones and many laptop models. This allows you to significantly expand their communication abilities:

• You can exchange various files (photos, videos, music) between phones, phone and laptop, communicator, camera.
• The module allows you to connect any peripheral devices (wireless headset, headphones, speakers, video cameras and other gadgets) to phones or personal computers.
• Talk on the phone without holding it with your hands.
• You can create a wireless network between several of your PCs and other devices at home or in a small office, allowing you to have constant access to the necessary files from any device.
• The Bluetooth adapter allows you to access the Internet by synchronizing your PC with your mobile phone.

That is, wireless devices are necessary not only for using a hands-free headset, but also facilitate communication between the computer and gadgets.

If we're already pairing them, it's more straightforward to start sending audio whenever we want without waiting. Reducing speaker size and weight usually results in reduced performance due to the use of different materials in both the cabinet and drivers. There will be details in the design of a wireless speaker that are usually rated as handles or the ability to carry cases or carry them from one side to the other in a backpack without difficulty or undue inconvenience.

Technical requirements for consideration

If we intend to use the equipment frequently outdoors, it is strongly recommended to have a resistant profile so that it at least supports splashes of water and dust or sand, although there are models that can even be submerged and that they continue to work. There we will find many clues that will tell us about the paper.

How to make an internal bluetooth module for a laptop?

For an active person, it may be inconvenient to use an external Bluetooth adapter. Some craftsmen suggest modifying it with your own hands into an internal one by soldering the device to a USB connector. This option is suitable only for those who are familiar with a soldering iron and have experience in assembling and disassembling laptops.

Internal battery and speakerphone

Four main ones. Resistance This is the resistance that the system opposes to the passage of current and should be as low as possible as it will be a good indication of the overall quality of the equipment. Number of Channels and Size of Drivers In the world of speakers, although the number of channels is not a direct signal of the quality we will receive, they give us more options. Usually the point is that on the market we find 0 systems or here comes the size of the drivers, which are key when we talk about a subwoofer, for example. In small sizes there is not much opportunity to offer good bass reproduction, and this is where we can find some important differences. It should be wide. . Around 10 hours is the value we have to demand from our portable equipment and it should be taken into account that this autonomy figure is usually specified for using the speaker at 50% of its maximum volume.

Work on improving the gadget with your own hands is carried out in several stages:

If everything is done competently, the device should work.

Is it possible to make a wireless module yourself?

Sometimes the question is asked: is it possible to make a transmitter with your own hands? This option is quite difficult to implement. You cannot assemble a microcircuit with your own hands at home, since it is very miniature, requires very delicate work, and the selection of the frequency range is carried out using integrated solutions; the protocol has been developed by specialists for years.

When evaluating the purchase of a speaker with an internal battery, keep in mind the charging time and system used by each piece of equipment. To make sure that the equipment you purchase is loud, it is much better if the microphones carry some kind of technology to reduce ambient noise.

With new wireless transmission standards there has been significant improvement in this type of connection between devices. Already for memory, there were times when the quality of the sound transmitted with this system was very low. Nowadays, you can enjoy quality sound in a huge number of speakers of all kinds, which will adapt like a glove to your needs.

Therefore, radio amateurs can only use ready-made Bluetooth transmitters and modify them at their own discretion, adding the necessary elements to the finished circuit with their own hands. Some suggest upgrading a music speaker with a module or making wireless speakers, as well as adding a transmitter to the car’s audio system to avoid a clutter of wires and download your favorite music directly from the Internet.

Minimum requirements for any type of wireless speaker

Wireless technology is designed in such a way that the sound source can be located some distance from the speaker. For this reason, a series of buttons are built into the same speaker as volume, power, pairing button or track control, etc. They will give the complex additional comfort without allowing access to your smartphone, tablet or regardless of the sound source to make adjustments.

More than wireless connections

Having certain connections will give you versatility and expand the possibilities of use. Before you start your search, you should be clear about the use you will give the speaker. It doesn't have the same features and specifications as a speaker designed to remain stationary in your home, one designed to be worn all day.

The video below shows in detail how to do this. But in any case, such manual work requires good knowledge and skills in radio engineering, otherwise from one working Bluetooth module and additional elements you can get a set of disparate radio components.

The first and most important is the battery. To enjoy hours of musical entertainment, this is the basic battery that meets your expectations. The required minimum is approximately 8 hours of continuous playback, although some can reach as much as 15 hours of use.

Additionally, it is important to review your battery charge time information once it is depleted, as some devices may have excessively long charge times. Another important feature that a speaker for your smartphone or tablet should have is that it is lightweight and compact.

DIY Bluetooth speaker? Yes, now I’ll tell you the easiest way to make Bluetooth equipment, which is quite popular nowadays, from your old home speakers.

Bluetooth speaker, how things are going

With the advent of Apple technology, I began to become quite interested in the technologies that are implemented in these devices, one of such technologies was AirPlay. The technology allowed you to stream audio and video to another device from your iPhone, iPad. The data was transmitted via Wi-Fi, which made it possible to maintain quality during transmission over the air. But there was one problem, this problem of all Apple devices - the price. Such speakers had a price of $300 and above, which discouraged the desire to purchase such a device, because the size of the speaker itself was quite small.

In addition to the functions already mentioned, the main thing is to know the reception range of the loudspeaker. He believes that the further the speaker is from the sound source, the lower the reception and therefore the sound quality will be lost. Something very useful as they use the link already created between your smartphone and the speaker to conveniently answer your calls without turning off your music or taking your smartphone out of your pocket. When you receive a call, the pause player on your smartphone or tablet will be activated and the speaker will emit a tone.

Later I thought that I have speakers at home, why should I overpay for new ones? I only need a device that will receive the AirPlay signal. After searching on the Internet, I realized that it would not be possible to “screw on” AirPlay, but it is possible to use Bluetooth and it will be much cheaper. First of all, I went to Chinese online stores, where I searched. Since I often ordered goods from AliExpress, this device was ordered from there.

When you end the call and end the call, you will play the music again at the exact point where you left off before the call. This will give you more peace of mind when it comes to carrying your speaker, as it is inevitable, when used outdoors, to get a little bumped or bumped, exposed to the humidity of a park lawn or the heat of a summer day.

Scalability is a very unusual feature among portable wireless speakers, but it's very useful in some cases and you'll be glad your speaker has this feature. This, for example, will allow you to join your presenter to your friend and quickly create a sound system 0 that will significantly improve the sound quality, or you will be able to expand the coverage area to cover a larger area.

The device does not have a brand, name or any other designations, but when connected it calls itself “BT310REV”.

Appearance.

As you can see in the photo below, the device is quite compact and will not get in the way in the car. Due to the fact that the kit includes an adapter, you can immediately insert one end of the adapter into the car radio, and the other end into the Bluetooth receiver. You can do the same with columns. Here you have a “DIY Bluetooth speaker”. The receiver is made of Soft-touch plastic in matte black color. This is an ideal option for this device; it is not noticeable, but at the same time it does not look disgusting.

Ideal for parties or impromptu meetings. Enjoying your home theater sound system doesn't have to be a mess of cables scattered all over the room. The power conditions are equivalent to any type of speaker and are determined by the usage that will be transferred to the device.

In general, the ideal is that they are capable of reproducing the entire spectrum of frequencies that a person can perceive. This range is 20 Hz bass frequencies and 000 Hz treble frequencies. That is, if a speaker is capable of covering the entire frequency range, it can produce sound that is more nuanced and more true to reality. If this range is reduced at the bottom, the speaker will not be able to offer deep bass. If you do it on top, you won't appreciate the higher tones.

Sound.

The sound of this receiver is 3.5 out of 5. The Bluetooth version is old, because of this the transmission speed is lower than it could be. Compared to a cable connection, the sound is quiet and there are noises, but if you turn it on on cheap speakers or simple tweeters in the car, I think you won’t notice any difference.

When it comes to sound power, this is directly related to the size of the speakers. For purely physical reasons, a 1.5" speaker may not provide the same sound quality and power as a 5" speaker. Manufacturers are aware of these limitations, so they have developed portable devices that can integrate up to 3 types of speakers or drivers that reproduce different frequency ranges, all in a compact size that can be carried in your pocket.

Even with size restrictions, it is recommended that the selected speaker have at least 80 dB SPL. Also, always try to test speakers before purchasing them. Very good speaker characteristics, at the end of the day, what really matters is that the type of sound you create pleases you, and since it is each person's subjective perception, you will have the last word.

Device specifications:

• Transmitter version: v3+EDR, Class 2 (Support A2DP V1.2 (built in Mic).
• Power: charging from USB 5V DC.
• Data transfer rate: 3 Mbps.
• Transmission distance: up to 5 meters. Also catches behind a concrete wall.
• There is a microphone.
• Battery 220mAh. As stated, enough for 8 hours of work.
• Works with all iOS and Android smartphones.

Contents of delivery:

• bluetooth transmitter
• 3.5 mm stereo adapter
• Micro USB charging cord
• User manual in English

Using a Bluetooth receiver.

1. First, connect the receiver to your speakers.
2. Press the only button on it. Hold this for 3-4 seconds, after which you will hear a woman’s voice in the speakers and the blue indicator will light up.
3. Turn on Bluetooth on your device and connect to the receiver. Its name is "BT310REV".
4. Everything connected to the iPa without any problems, music played from any application in the system. The device's charge was also displayed in the status bar.

To turn off the receiver, hold down the button until the blue indicator goes out.

You can also use it to connect to your computer's speakers and wirelessly enjoy your favorite music without having to replace them with new ones. Thanks to its size, you can take the mini disco to any corner of the world. From the beach to camping in any mountain range in the world.

Personal opinion on this device.

The device is definitely needed and I really liked it. The appearance is attractive. The sound, although not perfect, is still better than it could be. Don't think that now I'm only praising the device. In fact, it is Chinese, with all that it implies. A large number of defects and, as you may have guessed, I also came across a defective copy.

It has good sound quality. . First let's look at our picks and then see which is the winning horse. For less than 40 euros you have this small but intimidating speaker. This is the most compact, smaller than a cup of coffee, and with more than acceptable quality. It's true that when you push it to the max its shortcomings appear, but at this price you can't ask for more.

The small speaker is ideal for connecting to a mobile phone or tablet. It matches the root with its price, but the audio output is overly fair since it is only 6W. Not much, but enough for a room or space without excessive outside noise.

How it happened: About 3 times I connected the receiver to different speakers and it worked, but the connection lasted no more than 5 minutes, everything was fine. I was just glad. But one evening I decided to test the device and connected it for a long time. He played for about 45 minutes and then the problems started. The signal began to be interrupted more and more often, and the hiccups of the music were heard. It felt like he simply didn’t have time to receive the signal, he was already receiving a new one and missing the previous one. This lasted 2-3 minutes, during which time I tried to stop the music, the receiver played again for a couple of seconds, but again began to interrupt. Those 2-3 minutes passed and all hell broke loose, an eerie squeaking sound mixed with ultrasound came from the speakers. The Bluetooth receiver did not reboot, I had to wait until the battery ran out. After completely discharging, the device worked for a couple of minutes and when I tried to turn it on again, it did not turn on again. At the moment it has not been possible to restore it.

The connections are located at the back and the multi-function buttons are on one side. The finish appears to be quite good, but don't ask too much for the price.

Okay, from now on they are more than words. At a higher price, of course there is more, but differences you can't make with the idea.

It has built-in two 6W speakers and a microphone for handheld use, although it's true that the latter has almost the entire list.

However, it is the best value for money as this brand is exceeded with every team that brings it to market. For you the idea that more than 20 people at a time talking cannot tickle this little invention, what if with very high volume the bass starts to show its shortcomings, but we can ask for a little more Speaker of these measurements.

But despite this, DIY Bluetooth speaker is ready, purchase devices of this type and use them!

The word Bluetooth refers to the technology of transmitting data over a radio channel over a short distance of several meters, for communication between mobile phones, computers and other digital devices. The Bluetooth interface is characterized by low energy consumption and low cost. Currently used most often for communication between cell phones and wireless headsets. The Bluetooth radio interface was intended for transmitting data and voice messages.

In the traditional headset version, the Bluetooth module has a chip, a small 3.7V 50mA lithium-ion battery, a microphone, a speaker and a power button.

The low cost of the hardware, a good degree of protection and ease of use have made this standard very popular. Bluetooth uses frequencies in the region of 2.4-2.48 GHz and does not require licensing. Currently, the global industrial community has accepted this technology as a general standard.

The user experience that Bluetooth technology provides is sure to be hugely popular. Let's say, when you come to the office, your pocket computer is immediately automatically synchronized with your desktop PC, new contacts are transferred to your mobile phone, etc.

The Bluetooth module contains a forming, receiving and transmitting part of the equipment and built-in software. Communication between the module and the host controller is made using a high-speed USB interface or a UART/PCM interface. The host controller interface in the Bluetooth module is the command interface. The host sends commands through the IHC, and in response receives messages from the module about their execution; The communications manager sets up the required host controller configuration.

Bluetooth has two communication options: synchronous and asynchronous. The first type is designed to establish a symmetrical connection and is used for voice transmission. The information transmission speed is 64 Cit/s. The asynchronous version is designed for packet data transmission, the transmission speed is 720 Kbps. At the beginning of the block there is an access code, followed by a packet header containing the packet checksum and information about its parameters, and at the end an area directly containing the information being sent.

The diagram of one of the Bluetooth radio modules is shown below:

The frequency spectrum allocated for Bluetooth has a range of 2.402...2.480 GHz, which is divided into several channels. The bandwidth of each channel is 1 MHz. Channels are changed according to a pseudo-random law. Constant alternation of frequencies allows the radio interface to broadcast information over the entire range and eliminate interference from other devices. If this channel is busy, the system will switch to another, free from interference.

Discuss the article BLUETOOTH DEVICE DIAGRAM

Technological progress is moving forward by leaps and bounds, now even preschoolers have a mobile phone and know how to access the Internet, and seeing a person talking to himself on the street, no one will twirl his finger at his temple - everyone is already familiar with a Bluetooth headset, which is a wireless technology. This transmitter operates using encrypted signals, which, in addition to convenience, allows you to protect personal data. The wireless module allows you to establish communication among several devices.

Bluetooth application

This device is now built into almost all cell phones and many laptop models. This allows you to significantly expand their communication abilities:

• You can exchange various files (photos, videos, music) between phones, phone and laptop, communicator, camera.
• The module allows you to connect any peripheral devices (wireless headset, headphones, speakers, video cameras and other gadgets) to phones or personal computers.
• Talk on the phone without holding it with your hands.
• You can create a wireless network between several of your PCs and other devices at home or in a small office, allowing you to have constant access to the necessary files from any device.
• The Bluetooth adapter allows you to access the Internet by synchronizing your PC with your mobile phone.

• Type 2.0
• Built-in amplifier
• Output power 5 W (2 x 2.5 W)
• Lower limit of frequency range 100 Hz
• Upper limit of frequency range 20,000 Hz
• Height 70 mm / Width 70 mm / Depth 65 mm
• USB powered

2. The next component is the Bluetooth module. A quick inspection of the sites www.dx.com and www.aliexpress.com found suitable modules for 6-7 US dollars (http://www.dx.com/s/bluetooth+audio+receiver+module). However, according to an ad on a local flea market website, there was suddenly an option that could be picked up tomorrow for $10. I didn’t really want to wait for packages from Chinese friends, so I bought what I had. My option (Bluetooth Music Receiver Adapter Dock Adapter Audio Stereo a2dp 30 pin)

This adapter is designed to connect to legacy docking stations with a 30-pin Apple connector. To pair newer i-gadgets (with a lightning connector) or Android gadgets via Bluetooth.

3. And the last component is the lithium-ion battery. Everything is simple here. Since our speakers are powered by a standard USB cable (5V), we take any portable charger with a USB output and a capacity no matter how much money you spare. (http://catalog.onliner.by/portablecharger/~fp=5v)
Here, the larger the battery capacity, the longer the music plays.

Assembly.

First of all, we need to disassemble the SVEN 315. I used the video instructions.

Then we disassemble the Bluetooth module and remove the board. This is only needed for my specific 30-pin model (for boards ordered from http://www.dx.com/s/bluetooth+audio+receiver+module this will not be required).

Having disassembled the speaker, we shorten the audio input wire and solder it to the Bluetooth module. We also branch and solder the +5v power supply from USB.

We secure everything inside with thermoplastic glue so that nothing dangles.

After installation you can check it. We connect the speakers via USB to a portable charger. And we pair it with the phone.

That's all.

We've got excellent budget portable speakers with which you can safely go on a picnic with friends.

In this article you will learn how to assemble an inexpensive wireless speaker with which you can listen to music from a smartphone, tablet or computer. The signal will be transmitted via Bluetooth.

Required components:

Small speaker with up to 3W power
- Board with Bluetooth module
- Smartphone battery or 18650 battery
- Amplifier with 8002B chip
- Buttons for switching music (3 pieces)
- Switch
- Micro USB port for charging
- Wires
- A box or round plastic jar (for example, cosmetics)

First prepare the body. If using a jar, cut a hole in the lid for the speaker or make many small holes in the lid. Secure the speaker with bolts or glue.

Solder wires to the pins on the Bluetooth board that lead to the power, speaker, switch, and switches. These contacts are marked on the board or indicated in the instructions for it. The wires going to the speaker should be longer than the others as they will get twisted if the jar has a screw cap.

Make holes on the case for the power port and switches. Solder the components to the wires and attach them to the case using hot glue. Also fix the board and battery with glue inside the case so that they do not dangle.

Charge the speaker using the USB adapter and check the functionality of the speaker. If everything is done correctly, it will connect to the smartphone and output sound. If desired, the jar can be painted with spray paint so that it is difficult to guess that it is a homemade gadget.

To prevent the body from slipping, you can attach legs or rubberized material to its lower part.