I got my facts straight. Basically the guy bashed my code and told me you had software correction and I told him I didn't see any. I guess that's because there wasn't any. There are many techniques that can be used and I invented one that makes all seconds the same length of time which is not the way it is normally done. Even on the PC it is more erratic as the seconds are corrected over a period of minutes where you may only have 59 seconds in some of the minutes instead of 60 seconds in all minutes. I figured since you were still working on your clock you might be interested in adding it in. I was only trying to help.

PS Are you a ham? WA4BJO here. I'm an OM 36 years.

 

Space Varmint,

I don't think you got your facts straight. First of all Pommie didn't say I had software correction in this clock code, he said I had posted a method for software correction. Here's his quote;

The wording in your post suggests that I bashed your code. Basically you say "this guy" came up with a nice clock and then you go on to say "he" bashed your code. Without specifying that "he" was Pommie you leave the reader thinking that "this guy" (me) and "he" are the same guy and I resent the implication. Your subsequent posts are similarly misleading. That is, you're not specifying exactly who you're talking about.

Anyway, I congratulate you on coming up with a unique "software trimmer" implementation. As you may know, the general method as described on PICLIST is quite old. I came up with a simple workable Timer 2 implementation which also applies the correction per second and described it on Forum.Microchip in the following thread in the Tips-n-Tricks sub-forum on July 16, 2006; Clever and Useful Tricks (post #18)

I'm a pretty good assembly language programmer but I didn't comment on your example program because the formatting and comments made it difficult (for me) to understand.

If you would like to share your Timer 0 implementation of the method then may I suggest you clean it up a little and post it in a new thread?

Kind regards, Mike

 

Hey no problem. So you got one? Is it accurate? Great! I'm too busy right to make a new thread. I just threw this in a clock thread. I did it about 5 or 6, maybe 7 years ago. Then I moved on .

 

Nice circuit, i'm going to use this as my grad project. Can you list the parts that you used so that i can start ordering them asap?

 

Lets see, you spent how much of your parents money to get an education. For your grad project the best you can do is steal a design off the net. To top that you can not even figure out what parts you need to build it.

Anyone interested in giving this nice young man a job.

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I combined Digital clock and temp display into one unit. They work great. Both projects are from this site. Take a look at the picture and read 1st post of this project, you should be able to figure out the parts. Good luck

Attached Thumbnails

 

 

That's a nice looking PCB Sananh! Can we see the foil side? What are the LEDs in the upper right hand corner for?

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I don't know, but it's nice Good job!

 

Here are couple better pictures. It's a single side PCB so I couldn't etch all traces on PCB I have to use soldering iron and wires to finish it up.

Attached Thumbnails

   

 

sananh,

Very nice job Sir.

I wonder if your regulator gets hot? When I tried using a standard 7805 regulator it got extremely hot (it was being supplied by a 15v wall wart) so I built and use a little 5v/1a smps regulator based on the Micrel MIC4575.

Regards, Mike

 

Yes it does get hot... Total current comsumption is ~200mA. I think it should be ok. The clock is running little fast compared to my digital watch ~1 second on 24hrs.
Anyway thanks for sharing your work. Sananh

 

Sananh,
Good work. What kind of pcb etching method did you follow? Did you make it yourself. Can you explain it.

 

I was using PCB etching method see link below.
Cheap and good PCB etching solution.....

 

kindly sent detailed circuit diagram of the clock/ regards kumarmahesh

 

Sananh,
Good work. Nice job on your project. Can you provide specific links to the two projects you combined? I know one is at the beginning of this thread.

Mike, K8LH;
Not sure if you recall helping me last year on my led clock project from Sixca.com using the TPIC6B595N's But Its finally completed and ticking away. thanks again

Time to try a new one and I'd like to give this project a run, Do you have a BOM(Bill of Materials) needed for your project?

I'd like to build it as its presented, then make a second one or alter the first in a countdown format which incorporates an alarm.

Cheers
Steve