That's already done but thank you so much, the only problem now is my hours can count until 19 then they will reset. Sent a picture of wiring in my post before your post.

Have you tried it on the simulator?
Or are you doing this on a breadboard?

 

hi arian,
Wire error on one pin in last post.
Corrected.
LTspice simulation of the Hours.
E

 

hi arian,
Wire error on one pin in last post.
Corrected.
LTspice simulation of the Hours.
E


View attachment 256276

Thank you so much, it helped a lot and i managed to do it!

 

Professor accepted the design! Thanks again to everyone who helped! Now they said I should add a reset button and a button to add to the tens of minutes.
For the reset button, should i just connect the reset pins that i grounded to a switch?
And for the adder button... how can i do that?

 

hi arian,
Do you have the latest circuit diagram to post, makes it easier to suggest modifications. ?
E

 

Professor accepted the design! Thanks again to everyone who helped!

Did you explain to the other members of your group how the circuit works and why you did things a certain way? They may need to know that for future work. Did they contribute anything? If you did all of the work, they're not pulling their own weight.

Now they said I should add a reset button and a button to add to the tens of minutes.
For the reset button, should i just connect the reset pins that i grounded to a switch?
And for the adder button... how can i do that?

Post schematics for what you've tried.

 

hi arian,
Do you have the latest circuit diagram to post, makes it easier to suggest modifications. ?
E

Hello! Yes I'll attach it to this post!

Did you explain to the other members of your group how the circuit works and why you did things a certain way? They may need to know that for future work. Did they contribute anything? If you did all of the work, they're not pulling their own weight.
Post schematics for what you've tried.

Yes I did explain to them exactly and translated the datasheet of the ics for them so they can even understand better!
Right now this clock is working exactly as it should!
Here's a picture of it and here's the file for it, i'm using proteus 8.9, hope it works for you guys.

 

hi arain,
Consider increasing the 555 clock rate by, say, a factor of 10 or more, when you press a button.
This will make the 'mins' roll over at a faster rate, so that way you can set the Mins.
E

 

hi arain,
Consider increasing the 555 clock rate by, say, a factor of 10 or more, when you press a button.
This will make the 'mins' roll over at a faster rate, so that way you can set the Mins.
E

I can do that by adding another resistor and a switch or dip switch before the tens of minutes and connect it to the pin 3 of 555 right? Or am I taking it wrong?

 

hi a,
I would just increase the 555 clock into the Seconds Units, when the button is pressed.
The Seconds will go very fast, and so will the Minutes.
E

 

hi a,
I would just increase the 555 clock into the Seconds Units, when the button is pressed.
The Seconds will go very fast, and so will the Minutes.
E

That sounds good too. But a question, just to not bother myself with changing resistors all the time on bread board, can i do such a thing with a bread board? Like connecting these resistors to dip switch, and then connect the rest? If you know what i'm talking about, I'm not good at explaining at all

 

Made it work this way! Not very clean... and instead of that switch i'll use a wire in bread board, but it does the job!
Not the last part is just a way to reset the whole thing when necessary... can i do anything with dip switch?

 

hi a.
This is my option.
E