Up/Down Counter Circuit

[Mastahh]

Hey,

I think you are misunderstanding me.
Its ONLY to count a 'ten' UP.
Not down.

But,

To count the 'hundred' up and down.
Along with everything else.

If that is alright??

Thanks

=]

 

[ericgibbs]

Hey,

I think you are misunderstanding me.
Its ONLY to count a 'ten' UP.
Not down.

But,

To count the 'hundred' up and down.
Along with everything else.

If that is alright??

Thanks

=]

hi,
I believe this is close to what you are asking.

The circuit is growing like a Christmas tree, its getting very messy...

 

[Mastahh]

Hey,

Update to the circuit:

1. The Tens Work (Thanks), But Do Not Update The Next Numbers, eg, 10,20,30...80,90,00 (<-- should be 100),10...
2. The Original PTMs that count up and down in stages of one count all the digits updated: 0000,0111,0222,0333,0444,0555 etc
3. Also, sorry about this part, but if it is possible, i need it to count down in the hundreds too, along with the count up. Thanks

Thanks for all your help. I would be grateful if you know a solution to the above problems.

Thanks

=]

 

[ericgibbs]

Hey,

Update to the circuit:

1. The Tens Work (Thanks), But Do Not Update The Next Numbers, eg, 10,20,30...80,90,00 (<-- should be 100),10...
2. The Original PTMs that count up and down in stages of one count all the digits updated: 0000,0111,0222,0333,0444,0555 etc
3. Also, sorry about this part, but if it is possible, i need it to count down in the hundreds too, along with the count up. Thanks

Thanks for all your help. I would be grateful if you know a solution to the above problems.

Thanks

=]

Hi,
You have a wiring error.

I will try to look at your other requirement later on, busy at the present.

Try to figure it out yourself and post a diagram.

 

[ericgibbs]

Hi,
This circuit has a Global Up/down of the Units/tens/hundreds and a U/D for 10's and U/D for 100's.

This is the best I can do with this circuit, IMHO your approach in using this counter to solve the coin counting problem is the wrong way to go.

Especially as all you are doing is feeding the outputs of this counter into a PIC.

I know that you must use the Genie PIC, but I would have thought it would have quicker and more elegant [ more cost effective] if you did the counting in the PIC.

 

[Mastahh]

Hey,

The Tens/Hundreds count up still, but not down.

I am also still stuck with the problem of the units.

It counts like 0000,0111,0222,0333 etc.

What would you suggest to solve this problem??

Also, you mentioned that it would be easier to program the PIC to count up. How would you say i could do this. If it is much easier, then why not have a go for it??

Thanks for all your help!!

=]

 

[ericgibbs]

Hey,

The Tens/Hundreds count up still, but not down.

I am also still stuck with the problem of the units.

It counts like 0000,0111,0222,0333 etc.

What would you suggest to solve this problem??

Also, you mentioned that it would be easier to program the PIC to count up. How would you say i could do this. If it is much easier, then why not have a go for it??

Thanks for all your help!!

=]

I suspect you have a wiring error, in simulation it all works as expected.

Did you correct that error pointed out earlier.?

My problem with the Genie is that I dont have the hardware and most of the software to write and test code.

Can you say where in the UK you are.?? City/Town

 

[ericgibbs]

hi,
I have an error, I deleted a couple of lines while resizing the circuit to make it fit.
Add the links from CIN as shown here.

 

[Mastahh]

Hey,

My problems, unfortunately, continue to persist.

Firstly, the units count up and down now, but the tens do not change automatically (0000,0001,0002,0003...0008,0009,0000)

Secondly, both switches to count up and down for both the tens and hundreds to do work at all.

Those are the problems i can currently identify.
Attached is my circuit diagram.

Thanks

=]

PS. I am from London. I do not see how this is relevant to the circuit??

 

[Mastahh]

Also, i am sorry for the consistently bad quality screenshots of my circuit.
Like you said before, it is a big and messy circuit.
Due to this, i am unable to get the whole circuit big and clear on my screen.

 

[ericgibbs]

Hey,

My problems, unfortunately, continue to persist.

Firstly, the units count up and down now, but the tens do not change automatically (0000,0001,0002,0003...0008,0009,0000)

Secondly, both switches to count up and down for both the tens and hundreds to do work at all.

Those are the problems i can currently identify.
Attached is my circuit diagram.

Thanks

=]

PS. I am from London. I do not see how this is relevant to the circuit??

hi,
The circuit is counting up/down on the decades as I would expect without any problems, inspect this plot.

The fact that you are from London is NOT relevant to thus circuit, I would have considered visiting you to give you a hand if you had been closer.

This diagram is the last I can post for some time as I busy on other projects, I hope it goes well for you.

 

[Mastahh]

Hey,

I am not sure when you will reply but thanks for all your help so far.

Attached is my circuit, which i have tried to copy as exactly as possible.

Your have to look at the displays right to left.

My only problems are that the tens and hundreds are not counting at all.

Thanks a lot

=]

 

[Mastahh]

Hey all.

I am trying to make a circuit using the 4029 and 4511 that counts up and down.

So far it counts up and down in stages of one.

How would i make it count up and down in stages of 10 and 100 along with 1?

In other words, i want to do the following...

0000,0001,0002...0008,0009,0010,0011 etc
0000,0010,0020...0080,0090,0100,0110 etc
0000,0100,0200...0800,0900,1000,1100 etc

Thanks a lot in advance

=]

[The attachment below is my circuit so far, that already counts in stages of 1]

 

[ericgibbs]

Hey,

I am not sure when you will reply but thanks for all your help so far.

Attached is my circuit, which i have tried to copy as exactly as possible.

Your have to look at the displays right to left.

My only problems are that the tens and hundreds are not counting at all.

Thanks a lot

=]

hi,
I have spent quite some time today trying to make the circuit count up and down when using a global u/d , a tens u/d and a hundreds u/d.

The problem is that you are wanting to count all the decades u/d in the correct dec/inc counting sequence from where ever you inject an u/d pulse ie: units/tens/hundreds injection point, using a combination of opto coupler switches and push to make switches.

I see you you now have a 1000's decade.!

It can be done but IMHO the circuit is totally unrealistic for what you are using it for.

Make a fresh start and use some other method for getting the coin count into the PIC.

 

[ben7]

You can figure out your question by thinking!

You already posted a thread about this in the same fourm section!

 

[ericgibbs]

Hey all.

I am trying to make a circuit using the 4029 and 4511 that counts up and down.

So far it counts up and down in stages of one.

How would i make it count up and down in stages of 10 and 100 along with 1?

In other words, i want to do the following...

0000,0001,0002...0008,0009,0010,0011 etc
0000,0010,0020...0080,0090,0100,0110 etc
0000,0100,0200...0800,0900,1000,1100 etc

Thanks a lot in advance

=]

[The attachment below is my circuit so far, that already counts in stages of 1]

Try this circuit in your simulator.

Add the 1000's decade yourself.

 

[Mastahh]

Hey,

I know this must be getting annoying and so i apoogise for that.

I have connected up the circuit with the 4 pin AND and OR gates.

All the switches count up/down only in the units decade.

How can i prevent this?

Thanks

=]

[Sorry again for the constant bother]

 

[ericgibbs]

Hey,

I know this must be getting annoying and so i apoogise for that.

I have connected up the circuit with the 4 pin AND and OR gates.

All the switches count up/down only in the units decade.

How can i prevent this?

Thanks

=]

[Sorry again for the constant bother]

hi,
Its not a bother, its more frustrating because we are not getting an agreed result, so let me explain what I think you are asking..

Assume that the counter is displaying 000
I press the units UP key 111 times, I expect the display to show '111'
pressing the units DOWN key 111 times I would expect to show '000'.

OK so far
Assume I have '888' displayed.
I press the units UP key once, so number displayed is 889

I press the tens UP key once I expect to see 899 displayed
I press the hunds UP key once I expect 999

OK,

I press the hunds DOWN key 9 times I will see 099
I press the tens DOWN key 9 times I will see 009
Pressing the units DOWN key 9 times I will see 000

Is this what you are expecting from the counter, if not please give a numeric description of what you want.???

 

[Mastahh]

Hey,

Yes, that is exactly what i wish to have

 

[ericgibbs]

Hey,

Yes, that is exactly what i wish to have

hi,
I can see a problem, for that sequence we have to control the states of the CIN and COUT pins between each 4029, depending upon which U/D key pair being used, to clock individual 4029's,,, units,tens,huns,thou....
It really an impractical solution as I have explained,, the circuit is going to keep growing and growing.

My advice is to completely rethink the counting method.