In this era of flat-panel flying, the book is getting smaller and smaller, do you give your tablet and notebook a Bluetooth mini speaker? Traveling, traveling with a small Bluetooth stereo, not in the way, but also free to put music at any time, is not very comfortable. Although the sound quality of the Bluetooth audio is basically not comparable to that of the stereo and subwoofer, it is at least better than the flat and the speaker N of the notebook.
The biggest advantage of Bluetooth audio is that it gets rid of the inconvenient audio cable, but the Bluetooth audio of all brands on the market generally has only 3-4 hours of battery life, so people have to plug in the charger at all times, which makes it The advantage of the point has become a chicken rib. Of course, there are also life time of 7-8 hours, but the price seems to be above 500RMB, think about it helpless.
Suffering from this, I fully exerted the DIY spirit and decided to make a mini Bluetooth stereo.
After a few days of thinking, it took half a day to finally find materials and accessories on Taobao.
So hand-made
Hey~ I still have a DIY talent~~
The result of a busy day. . . Let me appreciate it.
More than 15 hours of battery life. . . Mom no longer has to worry that my stereo is out of power.
Let me introduce the production process~~
First solve the problems of tools, materials, and accessories.
Tools: soldering tools, hole openers, hand drills, utility knives, scissors, etc.
Material: The first is the small acoustic housing. I found a wooden heart-shaped storage box on Taobao.
Then there is the accessory, so I can find it on Taobao.
The Bluetooth module is actually inside the small steel gun, comes with a 3W amplifier, and has a card function.
3W speaker, speaker net cover. What is the size of the attention, the speaker is good or bad to see yourself
battery. Look at your shell size options, the battery is of course the bigger the better 2400mah: the maximum sound of the situation for 15 hours or so, no pressure. . .
Switch, microphone, mini USB female (mainly used for charging)
Lithium battery charging module (Bluetooth module charging current is too small, the battery has increased, such as the charging function of the Bluetooth module, the monkey year can only be full)
Decisively lift the charging system out
The latest collection of Bluetooth smart technology data, please pay attention to this week's Designs of week - let your smart Bluetooth product design no longer be resigned!
The accessories are almost finished, starting production
First, use the electric drill and the hole opener to open the horn of the sound housing. This is a technical job, no two brushes can really do it, and accidentally give up the waste.
Then drill the small holes in the indicator light and microphone. Use a utility knife to pin out the position of the switch and charging port. Fine work, test your craft
The switch, indicator light, microphone, and USB female are soldered on the line, and one by one is glued with AB glue.
Put the battery in parallel (parallel, the series voltage is too high, can not be burned without burning the Bluetooth board), let it go, it is best to use
Double-sided tape is fixed or simply glued to death, saving movement inside, affecting sound quality
Then put the speaker cover and the speaker on it, the Bluetooth module is fixed, and then the switch, indicator light and charging module are soldered up, almost finished.
The charging module is directly connected to the battery, and it does not need to be turned off during charging. The voltage of 5V will not burn out the Bluetooth board.
Try to close the lid
Try it out, determine the wood problem and stick it with glue to ensure the box is sealed and the sound is better.
Because the shell I chose is wood, the wooden box looks good. I put the box with a clear paint (varnish).
The latest collection of Bluetooth smart technology data, please pay attention to this week's Designs of week - let your smart Bluetooth product design no longer be resigned!
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