Feature:
1. Easy-to-build DIY Kit: This electronic kit provides all the necessary components for building a LED running light. Suitable for electronics enthusiasts and beginners looking for a fun and educational project.
2. NE555 Core Oscillator: The kit includes a self-excited multivibrator circuit with NE555 as the core oscillator. This reliable component ensures stable and precise timing for the LED running light effect.
3. Adjustable Speed Control: With the ability to adjust the value of R4, users can easily control the speed of the LED lights' movement. Customize the flow rate according to personal preference or specific project requirements.
4. CD4017 Decimal Counter: The kit features a decimal counter circuit using CD4017. The clock signal generated by NE555 is continuously applied to the CD4017's 14th pin, sequentially illuminating the 10 LEDs connected to its output pins (D1-D10) and creating the captivating running light effect.
5. Educational and Entertaining: This DIY electronic kit not only offers an enjoyable hands-on experience but also enhances knowledge and understanding of electronic circuits, timing mechanisms, and LED control. It is a great way to learn while having fun.
Specification:
One set weight: 7g
Kit name: NE555+CD4017 water lamp kit/spare parts
Power supply voltage: 2.5-14.5V
PCB size: 54 * 21mm/2.13 * 0.83in
PCB thickness: 1.6mm/0.06inch
Circuit principle:
This kit is mainly composed of a clock generation circuit and a decimal counter circuit. The self-excited multivibrator with NE555 as the core is used to charge capacitor C1 through R2, R3 and R4. When C1 starts to charge, pin 2 of NE555 is still at a low level, so pin 3 of the output terminal is at a high level. When the power supply is charged to C1 through R2, R3 and R4 to 2/3 of the power supply voltage, the level of pin 3 of the output terminal changes from high to low, the internal discharge tube of NE555 is connected, and capacitor C1 is discharged through pin 7 of R4, R3 and NE555, When the voltage at both ends of C1 is lower than 1/3 of the power supply voltage, the level of pin 3 of NE555 changes from low level to high level again. C1 is recharged again, so that the cycle forms oscillation. The charging time is 0.695 (R2+R3+R4) C1, and the discharging time is 0.695 (R4+R3) C1. The output frequency of the oscillator can be controlled by adjusting R4. The clock oscillation signal of NE555 is constantly added to pin 14 of the CD4017, and 10 LEDs are connected to the 10 output terminals of the CD4017. When the 10 output terminals of the CD4017 generate high levels in turn under the action of the clock signal, D1 - D10 are lit in turn, thus forming the effect of running water lamp.
Adjust R4 to adjust the flow speed of LED lights.
Note:
Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you!
Please allow 1-2cm measuring deviation due to manual measurement.
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12 months Warranty. Buy with confidence!
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If item is defective in 3 months, We will send you a replacement without extra charger, or offer refund after we receive the defective item.
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Items will be shipped within 1 business day on payment received.
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Item are shipped from shenzhen using Airmail, reach most of the countries within 10 to 20.
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Delivery time depends on destination and other factors, it may takes up to 20 business days.
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