Behoo LED chaser flowing water light ne555 module + cd4017 pcb board diy kit

Description: PCB board size: 7.3x3.2mm. PCB thickness: 1.6mm. Supply Voltage: 2.5-8 V. This package is mainly decimal counter circuit and circuit generated by the clock, from the core of the self-excited NE555 multivibrator power through R2, R3, R4 charge the capacitor C1, C1 started when charging, NE5552 feet still in low, so the output pin 3 goes high when power through R2, R3, R4 to charge C1 to 2 3 of the supply voltage, the output pin 3 level from high to low, NE555 conducting internal discharge, capacitor C1 through R4, R3, NE5557 feet discharge until the voltage across C1 is less than 1 3 of the supply voltage, NE555 and 3 feet level from low to high. C1 and charge again this cycle oscillations formed. Charging time: 0.695 R2 R3 R4 C1, discharge time: 0.695 R4 R3 C1, R4 can be adjusted to control the output frequency of the oscillator, the oscillation clock signal is applied continuously NE555 CD401714 feet, the output terminal 10 is connected with the CD401710 LED, when the out