Bluetooth Speaker Student Teaching Training Component Package Production an J6I3 Circuit function: The red terminal of the Bluetooth module is 5V power supply, and the white terminal is the left and right channels of the speaker.The is positive + and the black is negative -. As music or other sounds sound, the LED lights followIt moved shiningly with 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: The sound control LED melody light circuit is powered by the power supplyThe circuit, microphone amplifier circuit, LED light indicator circuit are composed, and the power supply adopts two batteries. The MIC converts the sound signal into an electrical signal, which is coupled to Q1 through C2 to amplify, and the amplified signal is sent to U1. U1 pushes the LED to emit light. The louder the sound, the higher the brightness of the LED, the faster the water flow.Note:All parts need to be installed by yourself. The outer cover is transparent if the paper is torn off. The entire Bluetooth speaker kit is equipped with a USB power cord, and the Bluetooth circuit board is well welded. You only need to connect the cable and assemble the sound control board. The power supply can be powered by a mobile phone charger or a computer 5V power supply. The sound quality is better when using a 2A power supply.Function: 3.7-5V DC power supply to automatically , 3W+3W stereo power amplifier, support Bluetooth, support power-off memory, U disk to , can be powered by a power bank.Bluetooth operation: Turn on the Bluetooth of the mobile phone, scan the device directly, find XC046 and click connect. After disconnecting Bluetooth, it will automatically switch to U disk.Power amplifier size: 106x66x60mmChannel output: 2 channelsOutput power: 3w+3wPower