bluetooth speaker production and assembly kit DIY

1. It can be controlled by remote control to realize switch control.
2. Full-frequency speakers, PU surface, silver-black diaphragm, 40 magnets, 4 ohms, 3W cost-effective, clear sound quality.
3. The DC 3.7-5V power supply interface will play music, stereo power amplifier, support Bluetooth, support power-off memory and U disk to play music.
4. The acrylic cover consists of 6 pieces of 3mm clear acrylic, beautifully assembled. And the brown protective film must be removed before splicing.
5. Suitable for connector welding and DIY production teaching training.
Wiring Instructions: The white connector connects to the speaker. and the red connector is connected to the power
Bluetooth operation: the blue light is on and the Bluetooth of the mobile phone will directly scan the device and find it.
Disconnect bluetooth after clicking connect. It will automatically switch to the U disk circuit function: the red end of the Bluetooth module is 5V power supply, and the white connector is the left and right channels of the speaker. The red wire is the + terminal and the black wire is the negative terminal - with music or other sounds, the LED will follow the rhythm of the sound. (After successful sonic welding, you will feel the wonderful circuit principle of sound and light fusion: voice-activated LED melody. The power circuit consists of circuits. Speaker microphone circuit and LED turn signal circuit. Power requires 2 batteries. The microphone converts audio into electrical signals through C2 and Q1 are paired to amplify, and the amplified signals are sent to U1 and U1 respectively to push the LEDs to emit light. The paper is transparent, and the whole set of bluetooth speakers has a USB cable and a bluetooth circuit board. For all connections, you need to connect the wires and assemble the audio control board. Yes Use a mobile phone charger or 5V power supply, and the computer uses a 2A power supply for better sound quality.