1. mainly consists of a clock production circuit and decimal counter circuit.
The 2nd Nucleus is the Ne555 self -stimulating multivibrator, the power supply capacitor C1 up to R2, R3, R4. When the C1 starts to charge, the 2 pin of the Ne555 is still low, so the output pin is 3 high levels. When the power supply is charged to the 2/3 power supply voltage via R2, R3 and R4, the output pin 3 varies from a height to the drop and the Ne555 internal discharge tube opens. The C1 capacitor is discharged over the 7 -pin of R4, R3 and Ne555. The voltage on the C1 varies from a low level to a low level of 3 pins of the Ne555, until it is less than 1/3 of the power supply voltage. The C1 is loaded back and the loop creates a oscillation.
3. Charging Duration: 0.695 C1, Discharge Duration: 0.695 (R4+R3) C1, R4, R4 can be adjusted to control the output frequency of the oscillator, and the clock signal of the ne555 is constantly added to the CD4017 Pin.
4. CD4017 '10 output is connected to ten leds. When the CD4017 '10 output produces a high level under the influence of the clock signal, the D1-D10 is illuminated in order to create a water light effect.
5. Set the R4 to adjust the rate of LED light.

Features:
Item Type: Water Flowing Light
Voltage: 2.5 ~ 14,5V
Size: 5.4 x 2.1 cm / 2.13 x 0.83 inches
Thickness: 1.6 mm

Packing list:
2 x module