Colorful sound-activated rotating LED light circuit board-making diy kit uses sound to control 10 LED flowing water lights, which can intuitively show the functions of CD4017. It is a kit for learning counters, frequency dividers, and colored light controllers. At the same time, the kit has excellent effects, and is fun and practical.
Product parameters:
Kit name: Voice-activated rotating LED light kit
Circuit board size: diameter size 48mm
Circuit board material: single-sided 1.6mm FR-4 board
Power supply voltage: 5V power supply
LED Quantity: 10pcs 5mm LED
LED Color: Green, Blue, White, Red, Yellow
Wiring instructions:
The functions of electrolytic capacitors in switching power supplies are bypass, decoupling, filtering, and energy storage. Generally, facing the first pin, a white side on the top of the capacitor is the negative pole, the lead is the positive pole, and the short lead is the negative pole.
Kind tips:
1. There are silk screen indications of various components printed on the PCB; please refer to the silk screen indications for soldering;
2. The resistance has no direction but different resistance values; please pay attention to distinguishing when welding;
3. Electrolytic capacitors and LED lights are divided into positive and negative poles. The long leg is positive (+), and the short leg is (-). When soldering, pay attention to the corresponding silk screen direction on the PCB board;
4 When connecting the power supply to the circuit board, pay attention to distinguish the positive and negative poles, and do not reverse them;
5. There are 3 green sides on the head of the microphone, which are negative poles.
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