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 Package List: 2 x Module
2 Pcs NE555+CD4017 Module Water Flowing LED Light Electronic Production Suite Red Color Flashing Lights Lamp DIY Kit Electronic Circuit
$27.99
- Mainly composed of clock generation circuit and decimal counter circuit.
- The self-excited multivibrator with NE555 as the core, the power supply charges capacitor C1 through R2, R3, R4. 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
- The charging time is: 0.695 (R2+R3+R4)C1, the discharge time is: 0.695 (R4+R3)C1, the R4 can be adjusted to control the output frequency of the oscillator, and the clock oscillation signal of NE555 is continuously added to the 14th pin of CD4017.
- Ten LEDs are connected to the 10 outputs of the CD4017. When the 10 outputs of the CD4017 alternately generate a high level under the action of the clock signal, D1–D10 are sequentially illuminated to form a water-light effect.
- Adjust the R4 to adjust the flowing speed of the LED light.
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