2pcs Bluetooth Speaker Production and Assembly Electronic Welding Kit Teaching Practice Component

Product features:

1. The volume control of the on/off machine can be achieved through remote control

2. Full frequency speaker with PU edge silver black diaphragm 40 magnetic 4 Ω 3W high cost-effectiveness and clear sound quality

3. Interface 3.7-5V DC power supply for automatic music playback stereo amplifier Bluetooth support power outage memory USB flash drive for music playback

4. Acrylic shell made 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 connections and DIY production teaching and practical training

Parameters:

Channel output: 2 channels

Output power: 3w+3w

Power supply voltage: DC 4.2-5V voltage exceeding 5V 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

Bluetooth operation: Turn on the phone Bluetooth you can directly scan the device and find “XC

Click on ‘Connect’ to complete the task. After disconnecting Bluetooth it will automatically switch to USB flash drive.

Circuit function:

The red terminal of the Bluetooth module is powered by a 5V power supply the white terminal is for the left and right channels of the speaker the red line is positive+ and the black line is negative -. With the sound of music or other sounds LED lights follow the rhythm of the sound The speed and size of the sound flicker. After successful welding you can feel the beautiful melody combination of sound and light. Circuit principle: The voice controlled LED melody light circuit is composed of a power circuit microphone amplification circuit and LED luminous indicator circuit. The power supply uses two batteries. MIC converts the sound signal into an electrical signal which is coupled to Q1 for amplification by C2. The amplified signal is sent to U1 and U1 drives the LED to emit light. The higher the sound the higher the LED brightness and the water flow rate The faster the temperature increases.

Attention:

All loose parts need to be packed by oneself. Tearing off the outer shell paper makes it transparent. The entire Bluetooth speaker kit is equipped with a uSB power cord and the Bluetooth circuit board is soldered. You only need to connect the cable and assemble the voice control board to use it. The power can be supplied by a mobile phone charger or computer 5V and the sound quality is better when using a 2A current power supply.

Kind reminder: Please strictly follow the product instructions. Improper use and wiring can cause the amplifier to malfunction or damage.

Package List:

DIY loose parts * 1