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schematic for 5 LED chaser circuit using 555 chip

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The datasheet of the CD4017 from most manufacturers show how to cascade two CD4017 ICs (plus an AND gate) for a sequence up to 16 or 17. Then you can make a Knight Rider with 8 LEDs.
 
I get datasheets from www.datasheetarchive.com where I can select a major manufacturer like Texas Instruments.
On their much more detailed datasheet they show how to cascade a few CD4017 ICs.
The CD4017 is a counter with decoded outputs that pulse in sequence. There is no coding, you simply hook it up correctly and it works.
 
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