1. It can be controlled by remote control to realize the volume control of the power on and off
2. Full-frequency speaker PU edge, silver-black diaphragm 40 magnetic 4 ohm 3W, cost-effective, clear sound quality
3. Interface 3.7-5V DC power supply to automatically play music, stereo power 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 spliced together. Exquisite and beautiful, you need to tear off the brown protective film before splicing
5. Very suitable for welding contact and DIY production teaching training
Channel output: 2 channels
Output power: 3w+3w
Power supply voltage: DC 4.2-5V, if the voltage exceeds 5V, the module will be damaged
Rated current: 1.5A-2A
046 Click to connect. After disconnecting the bluetooth, it will automatically switch to the USB flash drive.
The red terminal of the bluetooth module is 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 -. With the sound of music or other sounds, the LED lights will move with the rhythm of the sound (the speed of the sound and the size of the sound. After the welding is successful, you can feel the wonderful 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-emitting indicator circuit. The power supply adopts 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 drives the LED to emit light. , the louder the sound, the higher the LED brightness, the faster the water flow.
All the parts need to be installed by yourself. The casing paper is torn off and it is transparent. The whole set of bluetooth speaker kit is equipped with uSB power cable, the bluetooth circuit board is welded, only need to connect the cable and assemble the sound control board to use, the power supply can be powered by a mobile phone charger or a computer 5V, using a current of 2A power supply for better sound quality .
DIY parts* 1
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