I have a challenge of creating a circular clock with LEDs, made with analog electronics.
I thought of an AmpOp for every second cascaded with a 1 second clock. 60 AmpOps for seconds 60 for minutes and 24 for hours. Total 144 AmpOps.

Similar to the picture but made with analogic eletronics components.


Anyone have a better idea?

Thank you

 

hi girafa,
Welcome to AAC.
Is this a College project, if yes, I will move it to the homework forum for you.?
E

 

Yes. Is a College project. You can move please

Thanks

 

hi g,
Have you a scheme you could post,showing how these 144 OPA's will be interconnected.?
Seems an unusual approach.
E

 

Hi ericgibbs

I do not have a well-formed idea for the best approach to this project.

I remembered to put the ampop cascade, but as it requires a large amount of components decided to know what other solutions exist.

Thanks

 

Hi girafa,
OK,
As this a college assignment we like to see the students attempt at the solution, we can then give hints on helping to solve any problems.
Try to think out a Draft idea that you could post, that would give us a document of reference for discussing the project.
E

 

OK,
So I'm trying to do something like this, but replicated by 60 for minutes, 60 for seconds and 24 for hours.

The next ampop resets the previous one. There will be a 1-second clock that is common to all ampops of seconds.

What do you think this way? Is there a simpler one with less componentes?

Thanks

 

How is your clock osc timer going to self run??

 

made with analogic eletronics components

What do you mean by analog? Digital circuits use transistors, which are inherently analog devices, but use them in only 2 states.

 

dl324
I'm trying to do this. The oscillator will make a common clock to all AmpOps that only accepts it if the previous ampop output is actived.

Dodgydave
I know with digital electronics it was easy! In this case only a ampops and transistors are allowed. Digital ICs are not allowed.

 

Another idea is to use several cascaded LM3914s and use a linear input voltage with a one-minute period.
In this case is it possible to create this voltage with high precision?

 

Another idea is to use several cascaded LM3914s and use a linear input voltage with a one-minute period.
In this case is it possible to create this voltage with high precision?

Hi,

Sounds more theoretical than practical.
However, LM3914's are not, strictly speaking, analog devices they are borderline analog/digital devices because they take an analog input and provide a pseudo digital output. If they are allowed though, that's ok of course.
Purely analog i think would require an analog meter movement as output, with maybe one meter for hours and one meter for minutes, and both meters would be analog. If the hour meter was 0 to 12v reading, then you could output 1 to 12 volts to show the hours, but for the minutes you might have to provide a custom meter face design that can show 1 to 59 minutes with a voltage maybe 0.1 to 5.9 volts.
Just a couple of thoughts.

Pure analog with LED's would mean lighting the LED's with a variable current where the brighter one is the more advanced the hours or minutes are. That would make it very hard to read by a human through. Lighting one LED for hour 1, another LED for hour 2, another for hour 3, etc., is not a purely analog technique, just to note.

You might also want to mention what you mean by high precision. How good does it have to be.