Description

DIY bluetooth speaker making and assembling electronic welding kit teaching practice DIY electronic kit black speaker

Features:

1. It can be controlled by remote control to realize the volume control of the switch

2. Full-range speaker with PU side, silver-black diaphragm 40 magnet 4 ohm 3W, high cost performance, clear sound quality

3. Interface 3.7-5V DC power supply to automatically play music, stereo power amplifier, support For Bluetooth, support power-off memory, U disk to play music

4. Acrylic shell is composed of 6 pieces of 3mm high transparency acrylic spliced together. Exquisite and beautiful, the brown protective film needs to be removed before splicing

5. Very suitable for welding connection and DIY production teaching and training

parameter:

Channel output: 2 channels

Output power: 3w+3w

Power supply voltage: DC 4.2-5V, voltage 5V exceeding will damage the module

Rated current: 1.5A-2A

Wiring instructions: connect the white terminal to the speaker and the red terminal to the power supply

For Bluetooth operation: Turn on the Bluetooth of the mobile phone, scan the device directly, and find "XC

046 Click to connect. After disconnecting for Bluetooth, it will automatically switch to the USB flash drive.

Circuit function:

The red terminal of the for Bluetooth module is 5V power supply, the white terminal is for the left and right channels of the speaker, the red wire is positive +, and the black is negative -. With the sound of music or other sounds, the LED lights follow the rhythm of the sound (the speed of the sound flashes and moves. After the welding is successful, you can feel the beautiful melody combination of sound and light. Circuit principle: voice-activated LED melody The lamp circuit is composed of a power supply circuit, a microphone amplifier circuit, and an LED light indicator circuit. The power supply uses two batteries. The MIC converts the sound signal into an electrical signal, which is coupled to Q1 through C2 for amplification, and the amplified signal is sent to U1 and U1 pushes the LED to emit light , The louder the sound, the higher the brightness of the LED, the faster the water flow.

Notice:

All parts need to be installed by yourself. The outer cover is transparent if the paper is torn off. The whole set of for bluetooth speaker kit is equipped with uSB power cord. The for bluetooth circuit boards are all welded. You only need to connect the wire and assemble the sound control board. You can use the mobile phone charger or the computer 5V power supply for the power supply. The 2A power supply has better sound quality .

Reminder: Please strictly follow the product instructions. Improper use and wiring will cause the amplifier to fail to work normally or damage the amplifier.

Package list:

DIY parts*1.

About damage：

Since this kind of goods may be damaged during transportation, please check clearly after receiving the package. If you find any defective accessories, please use pictures and videos to record and feedback to us, and we will solve it for you as soon as possible to avoid losses.

Bluetooth audio production kit DIY electronic small production small speaker parts small power amplifier mobile phone speaker

Product selling point:

1. Using high-quality materials, the quality is guaranteed

2. Simplified components, easy to use and fast welding

3. High-quality 3W speakers

4. Stereo sound, shocking sound quality

5. Light and delicate compact shape, does not take up too much desktop space

parameter;

Delivery method: delivery in bulk (need to be welded by yourself)

Shell: acrylic shell

Product size: 7*7*8.3cm

Power amplifier circuit: HT6872 audio amplifier

Speaker: 2 inches 3W*1

Power supply mode: 5V DC power supply (mobile phone charger, power bank, etc.)

Audio input: two input methods of Bluetooth and audio cable (you can choose by yourself)

Switch terminal: power switch, bluetooth on or off, up and down function

Auxiliary function: spectrum function (LED flashing)

Package list:

Bluetooth speaker parts*1

Mini Speaker Kit 3W Speaker Small Power Amplifier Computer Audio Welding Practice Training Electronic DIY Production Parts Single and Double Audio Kit

Product selling point:

1. Using high-quality materials, the quality is guaranteed

2. Simplified components, easy to use and fast welding

3. Using 8002 professional-grade music chip, high-quality 3W speakers

4. Stereo sound, shocking sound quality

5. Light and delicate compact shape, does not take up too much desktop space

parameter;

Working voltage: 5V

Current: more than 1A

Amplifier power: 3W*2

Power supply method: mobile phone charger (charging treasure and computer are not recommended, because the computer current is too small, it will affect the sound quality, it is recommended to use 2A current for power supply) directly weld the power socket and plug in the wire directly. Solder the 4 shielded wires one by one, D1 D2 VCC GND.

Precautions:

1. When welding the power switch, try to control the welding time within 3 seconds to prevent the switch from being damaged by excessive temperature! (You can tin the switch pins first, then solder the wires)

2. Due to the limited current output by the USB port of the computer, if it is plugged into the USB port of the computer to supply power, the sound quality will be greatly reduced when the volume is turned up or the bass is heavier, so it is recommended to use a separate USB power supply (output 1A or more) to power the speaker.

3. There are sop8 SMD components on the back, you need to be sure to buy the spare parts.

4. Since the digital volume control in the power amplifier chip has a large gain, when increasing its volume, be careful not to make the input signal too large to cause the signal to cut and limit, resulting in sound distortion.

5. The acrylic shell needs to be assembled by itself. There are positive and negative sides. If it is installed incorrectly, it can be installed in reverse. easier. Need to tear off a layer of paper is the transparent shell.

Note: The main audio has a power switch, but the sub audio does not. If you buy a single audio, it is equipped with a power switch. There are volume adjustment knobs, and spectrum adjustment knobs.

DIY must-reads:

Electronic production is an activity that requires a certain electronic foundation and hands-on ability. Due to the different hands-on ability and technical level of each friend, we cannot guarantee that all friends can DIY successfully

Package list:

Mini Speaker Kit*1

Mini TEA5767 radio kit DIY parts

product description:

1. 100% brand new and high-quality products.

2. Made of high-quality materials, durable and practical.

3. Widely used.

4. With power-off memory function.

parameter:

Working voltage: DC4.5V-5.5V

Circuit board size: 7.7CMX6.1CM

Shell size 8.4cm*6.8CM*5.2CM

Speaker: 5W8 Euro

Frequency modulation range: 87MHZ-108MHZ

FM step: press once the step is 0.1MHZ, long press the FM key to continuously add and subtract

Function: digital display frequency function, power-off memory function, power-saving function

Power-off memory function: After turning off the power and powering on again, the radio station before the power-off is played.

Introduce the power saving function: every time the power is turned on or the FM key is pressed, the digital tube will display the frequency for 5 seconds, and the digital tube display will be automatically turned off after 5 seconds. There are two reasons for this design, 1 is power saving, 2 is the digital tube It will interfere with the sound when it is displayed, and the sound will be more beautiful when the digital tube display is turned off.

Note: The power supply of the DC seat is positive and negative.

Package list:

DIY parts*1

Horn*1

Shell *1

Screw set*1

Mini TEA5807 Radio Kit DIY Parts

Product selling point:

1. Made of high quality material, durable and practical.

2. The appearance is small and beautiful.

3. Wide application.

4. With power-off memory function.

6. With power saving function.

7. The circuit board is made of FR4-A high-quality PCB, and after tin plating, it is high-quality and beautiful.

parameter:

Working voltage: DC4.5V-5.5V

Board size: 7.7CMX6.1CM

Shell size 8.4cm*6.8CM*5.2CM

Speaker: 5W8 Euro

FM range: 87MHZ-108MHZ

FM step: press the step to 0.1MHZ, long press the FM key to continuously add and subtract

Function: digital display frequency function, power-off memory function, power-saving function

Power-off memory function: After the power is turned off, the power is turned on again, and the radio station before the power-off is played.

Power-saving function: After each power-on or pressing the FM button, the digital tube displays the frequency for 5 seconds, and the digital tube display will be automatically turned off after 5 seconds. There are two reasons for this design, 1 is to save power, and 2 is to display the digital tube. Time will interfere with the sound, and the sound is more beautiful when the digital tube display is turned off.

Note: The DC socket power supply is positive and negative outside, do not connect it in reverse.

installation steps:

1. Lock on the board with 4 M3*8 screws

2. Lock a 10MM copper post on each of the 4 screws in step 1

3. The front acrylic plate of the shell is fixed on the copper column

4. Install the left acrylic plate

5. Install the acrylic sheet on the other 3 sides

6. Use 4 M3*10 screws to lock the speaker to the acrylic plate on the back of the case

7. Finally, install the back panel on it.

the difference:

The module used in this radio has two chips, 5767 and 5807. The 5807 is an upgraded version of the 5767. The hardware and software of the two chips are compatible and can be replaced with each other. In terms of signal, 5807 will be slightly better than 5767, other parameters are the same. You can freely choose the chip you want.

Package list:

element:

Circuit board*1

262 small antenna*1

0.56 inch 4-bit common anode digital tube*1

100UF 50V electrolytic capacitor*3

10UF 25V electrolytic capacitor*2

22P ceramic capacitor*3

104 monolithic capacitor*4

8*8 Self-locking switch*1

7MM high self-locking switch cap*1

DC005 seat*1

4.7 ohm resistor*1

10K resistor*11

220K resistor*1

9012 triode*5

13.56M crystal oscillator*1

TEA5807 radio module*1

6*6*20Keys*2

2*5*7 LED*1

shell:

Acrylic board*1

M3*8 screw*30

M3 Nut*25

10MM double-pass copper column*5

50K Dial Potentiometer 1

8P IC socket 1

40P IC holder 1

LM386 chip 2

STC89C52 (programmed program) 1

22# wire one section

shell:

1 set of acrylic sheet

30 M3*8 screws

25 M3 nuts

10MM double-pass copper column 5