18 stage led sequencer


Posted on Feb 5, 2014

When power is applied, the 15K resistor and 10uF cap at pin 15 will reset the counters to the zero count where pin 3 is at +12 and all other outputs are at zero. The 2 diodes (1n914) and 15 resistor form a AND gate so the clock pulse will be passed to the right side counter when the sequence starts..


18 stage led sequencer
Click here to download the full size of the above Circuit.




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