DIY

7 '' Portable Bluetooth Multimedia Speaker

Portable multimedia Bluetooth speaker with 7 -inch screen  Portable multimedia Bluetooth speaker with 7  Portable multimedia Bluetooth speaker with 7-inch screen In this article, a DIY master will tell us how he made a wireless portable Bluetooth speaker that also has a built-in multimedia screen.
Not only does this speaker look stylish with a built-in 7-inch screen, it also supports many features like regular phone or tablet, including Wi-Fi, video streaming, phone mirroring, and more.
Master designed this audio unit using a Dayton Audio TCP115-4 (4 “) woofer paired with a Dayton Audio TD20F-4 (3/4”) tweeter (tweeter). The sound quality and rich bass are quite decent for such a budget combo. Alternatively, in the “materials” the wizard gives links to the speakers of other companies.
The amplifier of the device, which is integrated into the Android multimedia system, copes with its task and even at high volume distortions are minimal or absent.
Tools and materials: -7-inch Android multimedia display (1GB + 16GB is suitable); – 4-inch woofer with 4 Ohm impedance – 2 pcs; -HF speaker 4 Ohm -2 pcs; -Speaker tube 26×95 mm – 2 pcs; -Crossover – 2 pcs; -Batteries 18650 – 6 pcs; -Battery holder 2 by 3 cells; -FM radio antenna (optional); – DC connector; -Rubber feet; -Heat shrink tube; -MDF sealant; -BMS 3S board; -Charger 12.6 V, 1 A; -Digital voltmeter; -Button; -Carbon fiber vinyl; -M4X12 mm screws; -A tool for stripping wires; -Soldering iron; -Cordless drill; -Electric jigsaw; -Orbital sander; -Drills; -Milling machine manual for wood; – Device for cutting circles on a router; – Router bits; -Cone drills; -Forstner drills; -A set of crowns for wood; -Cerner; -Sticky cloth to remove dust; -Solder; -Solder paste; -Third hand;
 Portable multimedia Bluetooth speaker with 7 Portable multimedia Bluetooth speaker with 7 -inch screen Step one: design
First, the master designed the device case. Then he developed a scheme. Files with drawings and a diagram can be downloaded below.
Plans for portable multimedia speakers.pdfConnection diagram.pdfStep two: body
The main material that the master uses for the manufacture of the case is a 10 mm thick MDF board. You can use plywood. You can also use a different thickness (8 or 12 mm), but then you will have to adjust the drawings by adding or subtracting the difference in thickness, length or width. The master believes that MDF is more convenient when trimming or rounding corners.
To obtain high-quality clean cuts, it is better to use a circular saw or jigsaw.
The craftsman cut grooves in the panels for easier and more reliable assembly. The grooves are easy to make with a circular saw, but if there is no access to it, you can assemble the body without grooves.
Portable multimedia Bluetooth speaker with 7-inch screen Portable multimedia Bluetooth speaker with 7-inch screen Further, the master marks the places for the speakers and the multimedia screen on the blanks.
Portable multimedia Bluetooth speaker with 7-inch screen Before gluing the case, he drills holes for attaching the battery holders. You also need to drill a hole in each side panel through which the amplifier wires will be pulled after assembling the case.
Portable multimedia Bluetooth speaker with 7 Portable multimedia Bluetooth speaker with 7 -inch screen Now you can glue the main body.
Portable multimedia Bluetooth speaker with 7-inch screen Portable multimedia Bluetooth speaker with a 7-inch screen Step three: front and back panels
Then, using a circle cutter and a router, the craftsman cut a groove 4 mm deep. This groove is needed to mount the speakers flush with the front bezel.
Portable multimedia Bluetooth column with a 7-inch screen Portable multimedia Bluetooth speaker with 7-inch screen Cut a hole for the screen.
Portable multimedia Bluetooth speaker with 7 Portable multimedia Bluetooth speaker with 7-inch screen Step four: preliminary assembly
To give the column a better look, the wizard rounds the edges of the case.
Portable multimedia Bluetooth speaker with 7-inch screen Glue two strips to the inside of the front panel. The bars are installed at the top and bottom of the holes for the screen and will serve as an additional mount.
Portable multimedia Bluetooth speaker with 7-inch screen Now you need to apply a few drops of glue and glue the front and back panels. After the glue dries, you need to process the joints of the body and panels with a milling cutter.
Portable multimedia Bluetooth speaker with 7-inch screen Portable multimedia Bluetooth speaker with 7-inch screen Portable multimedia Bluetooth speaker with a 7-inch screen Portable multimedia Bluetooth speaker with 7 -inch screen After adjusting the details, removes the panels and cuts out all the necessary holes.
Portable multimedia Bluetooth speaker with 7-inch screen Portable multimedia Bluetooth speaker with a 7-inch screen Portable multimedia Bluetooth speaker with 7-inch screen Step five: finishing
The front and back panels can now be coated with MDF sealant. It is important to close the pores of the MDF to obtain a smooth color. After the sealant dries, he sands the surface with 800 grit sandpaper. Then he wipes the surface with alcohol and a “sticky cloth” so that no dust remains on the surface. After several coats of primer, he again grinds the panels with sandpaper and paints them with spray paint.
Portable multimedia Bluetooth speaker with 7-inch screen Portable multimedia Bluetooth speaker with 7-inch screen Portable multimedia Bluetooth speaker with a 7-inch screen Portable multimedia Bluetooth speaker with 7-inch screen Portable multimedia Bluetooth speaker with a 7-inch screen Portable multimedia Bluetooth speaker with 7-inch screen Portable multimedia Bluetooth speaker with a 7-inch screen The master decided to cover the main body with leatherette. Contact cement must be applied to the body and leatherette. Then cover the body with material, trying to smooth out all the folds. Cut off excess material.
Portable multimedia Bluetooth speaker with 7-inch screen Portable multimedia Bluetooth speaker with 7-inch screen Portable multimedia Bluetooth speaker with a 7-inch screen Now you need to cut and drill holes in the control panel for the switches, charging, USB port, and voltmeter. After the holes have been cut, sticks vinyl onto the front panel.
Portable multimedia Bluetooth speaker with 7-inch screen Portable multimedia Bluetooth speaker with 7-inch screen Step Six: Electronics and Final Assembly
Now you need to install the parts in their intended locations. To fix the details, the master applies epoxy resin.
Portable multimedia Bluetooth speaker with 7-inch screen Portable multimedia Bluetooth speaker with a 7-inch screen Portable multimedia Bluetooth speaker with 7 -inch screen  Portable multimedia Bluetooth speaker with 7 Portable multimedia Bluetooth speaker with 7 -inch screen  Portable multimedia Bluetooth speaker with 7 Next, you need to install electronics inside the case and make a connection according to the diagram.
Portable multimedia Bluetooth speaker with 7-inch screen Installs and screws up the speakers.
Portable multimedia Bluetooth speaker with 7-inch screen Portable multimedia Bluetooth speaker with a 7-inch screen Portable multimedia Bluetooth speaker with 7 -inch screen  Portable multimedia Bluetooth speaker with 7 Portable multimedia Bluetooth speaker with 7 -inch screen Portable multimedia Bluetooth speaker with 7-inch screen Installs plastic tubes and glues the legs.
 Portable multimedia Bluetooth speaker with 7-inch screen Portable multimedia Bluetooth speaker with 7-inch screen Portable multimedia Bluetooth speaker with a 7-inch screen Now you need to charge the batteries and test the audio device.
Portable multimedia Bluetooth speaker with 7 -inch screen  Portable multimedia Bluetooth speaker with 7 Portable multimedia Bluetooth speaker with 7 -inch screen Portable multimedia Bluetooth speaker with 7-inch screen According to the master, although some mistakes were made, on the whole the device turned out to be beautiful and with good characteristics.
 Portable multimedia Bluetooth speaker with 7  Portable multimedia Bluetooth speaker with 7-inch screen The whole process of the manufacture of such a portable Bluetooth speaker with a multimedia screen, as well as a demonstration of its operation, can be seen in the video.

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