LED sequencer use CD4017 with PIC Micrcontroller

In this tutorial we will learn how to make make LED sequencer use CD4017 IC. Here I am use PIC16F877A Microcontroller for pulse generator. You can watch the video or read the written tutorial below.

CD4017 IC

CD4017

CD4017 decade counter with 10 bit decoded output. CD4017 is 5 stage Johnsor counters having 10 bit decoded outputs respectively. Inputs include a CLOCK, and a RESET, a CLOCK INHIBIT signal. Schmit trigger action in the  clock input circuit provide pulse shaping that allows unlimited clock input pulse rise time and fall time.

pin diagram of CD4017

Circuit Diagram:

Mikro C Code:

# define SW PORTB.B0
void main() {
     TRISB7_bit = 0;               // RB7 is output port
     PORTB.F7 = 0;                 // clear RB7
     TRISB6_bit = 0;               // RB6 is output port
     PORTB.F6 = 0;                 // clear RB6
     TRISB0_bit = 1;                // RB0 is output port
     PORTB.F0 = 0;                    // clear  RB0
   
     while(1){
              if(SW==1){
                        while(SW==1);
                        PORTB.F6 = ~PORTB.F6;      // RB6 is toggle
                        }


              PORTB.F7 = 1;
              Delay_ms(50);
              PORTB.F7 = 0;
              Delay_ms(50);
              }


}





Click the download button for program file:

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