Walfront 2pcs Water Flowing Light Module, 2.514.5V Electronic Circuit DIY Running LED Kit, Electronic Components

Specification: Item Type:Water Flowing Light Voltage:2.5~14.5V Size:5.4 x 2.1cm / 2.13 x 0.83in Thickness:1.6mm When C1 starts charging, the 2 pin of NE555 is still at low level, so the output pin 3 is high level. When the power supply is charged to the 2/3 power supply voltage through R2, R3, and R4, the output pin 3 level changes from high to low, and the NE555 internal discharge tube is turned on. The capacitor C1 is discharged through the 7-pin of R4, R3, and NE555. Until the voltage across C1 is lower than 1/3 of the power supply voltage, the level of the 3 pin of the NE555 changes from low level to high level. C1 is charged again, and the cycle forms an oscillation. Package List: 2 x Module

Features

• Output: Ten LEDs are connected to the ten outputs of the CD4017. When the 10 outputs of the CD4017 generate high levels alternately under the action of the clock , D1-D10 light up in sequence to form a water light effect.
• Principle: The self-excited multivibrator with NE555 as the core, the power source charges the capacitor C1 through R2, R3, R4.
• and discharge time: , 0.695 (R2 + R3 + R4) C1, discharge, 0.695 (R4 + R3) C1, R4 can be adjusted to control the output frequency of the oscillator, and the oscillator clock oscillation . NE555 is continuously added to the 14th pin of CD4017.
• Structure: This kind of water lamp is mainly composed of a clock generation circuit and a decimal counter circuit.
• Adjustable: This lamp can adjust R4 to adjust the rate of the LED lamp.