FM Radio DIY Electronics Kit 5.0-Compatible Speaker with Voice-Activated Level Indicator DIY Electronics Kit

FM Radio DIY Electronics Kit 5.0-Compatible Speaker with Voice-Activated Level Indicator DIY Electronics Kit Description

1. 2-in-1 audio experience: high-quality speakers + FṂ function, easy to connect to the phone, enjoy music
2. Convenient FM frequency modulation function: automatic search and memory channels, power failure to resume playback, convenient entertainment
3. Colorful LED music lighting effect: 12 LEDs flash with the music, digital display shows mode, volume and frequency
4. Multi-function remote control operation: equipped with a remote control to adjust the volume, mode, channel, DIY assembly fun. Powerful and output: Wireless , USB/ card playback, high-power output, external speakers are more shocking
5. Working current:recommended. 2A or above; Main functions: 5.0 reception, USB, card, FM radio playback, voice call, AUX input

Product name: 5.0 speaker with voice-controlled level indicator (split parts)
Working voltage:DC5V (can be powered by 5V1.5-2.1AUSB charger)
Output power: 2.0 dual-channel 3WX2
Rated power: 5W
Frequency response: 4KHz
Total harmonic distortion: 3%
Signal-to-noise ratio: 3dB
Rated impedance: 3Ω
Welding method and precautions:
The acrylic shell has a protective film. Tear off the protective film before assembly, and figure out the position of each board, then install the speaker and circuit board, and finally assemble.
The adjustable resistor for adjusting the sensitivity is welded the back of the PCB and exposed after the shell is installed, so that the sensitivity can be adjusted at any .
The components should be welded from short to high, and pay attention to distinguishing the positive and negative poles. The polarity of electrolytic capacitors and light-emitting diodes: the long leg is the positive pole and the short leg is the negative pole.
After welding, check whether there is a cold solder joint or shor