The NE555 + CD4017 Water Flowing Light LED Module DIY Kit is a sequential LED chaser circuit that lights 10 red LEDs one after another in a continuous flowing pattern. The NE555 timer IC generates clock pulses at a set frequency, and the CD4017 decade counter IC advances one output pin per clock pulse, turning on each LED in sequence. The ne555 light module kit operates from 2.5V to 14.5V, covering USB, battery, and bench supply inputs without any modification.
The ne555 timer ic and CD4017 combination is one of the most widely taught digital-analogue interfacing circuits in Indian electronics syllabi. The ne555 water module name comes from the visual effect the flowing red LEDs resemble water moving through a channel when the circuit runs at mid-range speed. Speed control is achieved by changing the RC timing components on the NE555 a larger capacitor slows the clock, and a smaller resistor increases it. One trade-off: the kit uses fixed SMD resistors, so speed adjustment requires component replacement rather than a potentiometer.
The non-obvious learning detail is the decade counter architecture of the CD4017 it has 10 sequenced outputs and resets automatically on the 11th clock pulse, which is why exactly 10 LEDs complete one full cycle. The DIY electronics projects community across India uses this kit for electronics lab practicals, light effect demos, and NE555 timer study.
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- NE555 timer generates clock pulses to drive CD4017 counter sequentially
- CD4017 decade counter outputs advance one LED per clock pulse received
- 10 red LEDs produce continuous flowing water light effect on board
- SMD resistors keep PCB layout compact and component placement clean
- Input range of 2.5V to 14.5V suits battery and adapter supplies
Technical Specifications:
 Applications:
- Electronics lab uses NE555 CD4017 Water Flowing Light LED DIY Kit
- DIY electronics projects use ne555+cd4017 running led flow kit for demo
- School STEM display uses flowing LED module as visual light effect
- NE555 study project uses ne555 water following light module for timing
Package Includes:
- 1 × NE555 + CD4017 Water Flowing Light LED Module DIY Kit
Ritu Sharma –
Bought from the best electronics store with cash on delivery option, quality feels trustworthy and pan India delivery arrived safely on time.
Amit Verma –
Received this DIY science kit Rajasthan with packed carefully service, LED flow pattern works perfectly and support responsive team helped during assembly process.
Vikas Yadav –
Impressed with quality
Nakul Gupta –
Generates sequential LED lighting effect with smooth water flow pattern during circuit operation
Sanjay Patel –
Compact design for easy assembly and beginner friendly