NOTE:
1. Because of the battery is not allow shipping , so you need prepard 2pcs 23A battery by yourself.
2. about the LED color: we defalt sent GREEN. if you want yellow or red. pls note in the order page.
3. it is DIY soldering kit. shipping with DIY parts. you need assemble it.
Shipping method: DIY parts
Working current: 15mA
Shell material: transparent ABS
Number of leds: 50
Product net weight: 70g
Luminous color: red, green, yellow
KA2284 is an integrated circuit used for 5-point LED level indication, inputting different voltages, it can output 5 LEDs with different lighting states, and the LEDs turn on and off sequentially. The number of LEDs lit is often used as an indication of the power amplifier output or the level of ambient sound, that is, the louder the sound, the more LEDs are lit, and the smaller the sound, the fewer LEDs are lit.
This circuit consists of two parts: a triode amplifier circuit and a level indicator circuit. The microphone sends the received sound to the triode Q1 through C3 for amplification, and then sends it to the signal input terminal (pin 8) of the KA2284. The KA2284 drives 5 groups of light-emitting diodes to display on and off. . The power supply of the circuit is 12V, R1-R5 are the current limiting resistors of the light-emitting diodes, and every 5 light-emitting diodes are connected in series. The left and right sides of the glasses are 5 groups of light-emitting diodes corresponding to mirror images. Adjusting RP1 can adjust the sound sensing sensitivity.
Logistics information
Our products are located in Hong Kong, China, and the logistics speed depends on your specific location. According to our experience, it usually takes about 15-20 days of transportation time
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How to choose the correct size:
Step 1 Please measure your foot length carefully.
Step 2 Please choose the correct size according to your foot length and chinese size.
For example, If your foot length is 255 mm , you should choose the size 8.
