2pcs NE555+CD4017 Module Water Flowing LED Light Electronic Production Suite Red Flashing Lights Lamp DIY Kit Electronic Circuit
2pcs NE555+CD4017 Module Water Flowing LED Light Electronic Production Suite Red Flashing Lights Lamp DIY Kit Electronic Circuit
Product Features
- Mainly consists of a clock generation circuit and a decimal counter circuit.
- In the self-excited multivibrator with NE555 as the core, the power supply charges the capacitor C1 through R2, R3, R4. When C1 with the Charging starts, the 2 pin of the NE555 is still at a low level, so the output pin 3 is at a high level. When the power supply is charged
- 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.
- There are ten LEDs connected to the 10 outputs of the CD4017. When the 10 outputs of the CD4017 alternately produce a high level under the influence of the clock signal, D1 - D10 light up one after the other to create a water light effect.
- Adjust the R4 to adjust the flow rate of the LED light.