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please help with my crossroad traffic light project...
- Thread starter D@rkL0rd
- Start date
http://www.doctronics.co.uk/4017.htm
This website has a good animation. Scroll down to what is a decade counter, and press play.
This website has a good animation. Scroll down to what is a decade counter, and press play.
well i finally got the required pulse from the timer ....but now in the counter the pin 0 is not going high in the first loop it goes high int he second loop...please helpThe short is marked red in this picture:
you did now, but not in the picture from your previous post #15.
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You cannot leave unused CMOS inputs floating.
Tie R (reset, active high) and EN (enable, acive low) to GND.
You can create a reset signal for startup (not too well defined but possibly useful) using the top left circuit from this page. Conect the output signal of the reset circuit to R of the 4017 (in this case, of course, do not tie R to GND).
Tie R (reset, active high) and EN (enable, acive low) to GND.
You can create a reset signal for startup (not too well defined but possibly useful) using the top left circuit from this page. Conect the output signal of the reset circuit to R of the 4017 (in this case, of course, do not tie R to GND).
sorry i uplaoded the wrong photo this is the one i am talking about...
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EN and R are still floating...
i connected it...then also the pin 0 is not going high in the first loop its going high in the second loop...
After Reset, Q0 must be high. If not, your wiring is wrong.
What do you mean by loop? Draw a timing tiagram of your circuit similar to figure 5 in the datasheet.
What do you mean by loop? Draw a timing tiagram of your circuit similar to figure 5 in the datasheet.
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