White DIY Electronic Kit Bluetooth Speaker Electronics DIY Soldering Project Kit Teaching Practice Bluetooth Stereo Speaker White DIY Electronic Kit Bluetooth Speaker Electronics DIY Soldering Project Kit Teaching Practice Bluetooth Stereo Speaker Product selling points: 1. The volume can be controlled by remote control. 2. Full-range speaker with PU edge, silver-black diaphragm, 40 magnets, 4 ohms, 3W, high cost performance, clear sound quality 3. Interface 3.7-5V DC power supply to automatically play music, stereo amplifier, support Bluetooth, support power-off memory, U disk to play music 4. The acrylic shell is made of 6 pieces of 3mm high-transparency acrylic. Exquisite and beautiful, you need to remove the brown protective film before splicing 5. Very suitable for welding contact and DIY production teaching and training parameter: 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 Bluetooth of your mobile phone and scan the device directly to find "XC 046Click to connect. After disconnecting Bluetooth, it will automatically switch to the USB flash drive. Circuit function: The red terminal of the Bluetooth module is powered by the 5V power supply, the white terminal is the left and right channels of the speaker, the red wire is positive +, and the black is negative -. As music or other sounds sound, the LED lights will flash and move according to the rhythm of the sound (the speed of the sound). After the welding is successful, you can feel the wonderful melody combination of sound and light. Circuit principle: Voice-controlled LED melody The light circuit consists of a power supply circuit, a microphone amplification circuit, and an LED lighting indication circuit. The power supply uses two batteries. The MIC converts the sound signal into an electrical signal, which is coupled to Q1 for amplification via C2. The amplified signal is sent to U1, which drives the LED to emit light. , the louder the sound, the higher the brightness of the LED and the faster the water flow speed. Notice: All spare parts need to be installed by yourself. Once the outer paper is removed, it becomes transparent. The entire Bluetooth speaker kit is equipped with a USB power cord. The Bluetooth circuit board is soldered. You only need to connect the wires and assemble the sound control board to use it. The power supply can be powered by a mobile phone charger or a 5V computer. The sound quality is better when using a power supply with a current of 2A. . Warm reminder: Please strictly follow the product instructions. Incorrect use and wiring will cause the amplifier to fail to function normally or damage the amplifier. Package list: DIY parts*1 _x000D_