bobleny Posted November 25, 2006 Report Share Posted November 25, 2006 Ok, I finally figured out how to do my clock..., I think.This is what I came up with:I have a few concerns....First, does anyone see any problems with it?Second, please take a closer look at how and when it is reseting. Will it work that way?Third, I need a 6-Bit Binary Counter, that will work with this circuit, any numbers?And please, any comments or questions, are appreciated! Quote Link to comment Share on other sites More sharing options...
mvs sarma Posted November 27, 2006 Report Share Posted November 27, 2006 Hi BoblenyIntead of asking whether someone is familiar with binary-- just think-- what heading you have designed-- i appeciate that you may perhaps be arning now-- coming to check-- i suugest that you try to breadboard it and have first hand experience-- or simulate on a softwaRE AND SEE WHAT HAPPENS- LIST YOUR PROBLEMS AND THEN SOME ONE CAN TRY HELP YOU REVISE THE DESIGN-- IT IS A PROCESS MY DEAR-- GOT THRO'.However you have not defined the displays and their MAX value. Shall I imagine that LSD as seconds,with max of 9, next one is seconds(tens) with 5 as upper limit, and the MSD is units minutes with 9 as upper limit ??sarma Quote Link to comment Share on other sites More sharing options...
mugsby Posted November 27, 2006 Report Share Posted November 27, 2006 if this is something that is going to be for sale wouldn't be easyier(and cheaper) to use the output from the 7 segment driver on a $5 clock? Quote Link to comment Share on other sites More sharing options...
bobleny Posted November 27, 2006 Author Report Share Posted November 27, 2006 The only reason I have yet to build this is because I don't know any 6Bit binary counters. When I looked it up online I got a whole lotta nothing. So, either they don't make 6Bit binary counters and a lot of people want them or they do make them. I don't know much about ICs, which makes it difficult to find any chip. I don't know what a 12 stage binary counter is? I found lots of stage binary counters... Thats why I was hoping someone with knowledge of binary counters, or ICs in general could help me find something applicable. It doesn't have to be a 6bit counter but it would be preferred.P.S. What on earth is, "arning"????? Quote Link to comment Share on other sites More sharing options...
audioguru Posted November 27, 2006 Report Share Posted November 27, 2006 Hi Bob,In "the good old days", chips for making a clock were available. Now a clock is so cheap that the chips aren't sold anymore.I also couldn't find a 6-bit binary Cmos counter IC. Ripple counters with many stages are available but cannot have their outputs gated together for decoding like you want.For decoding the outputs with a gate, a syncronous counter is needed. You are already using a syncronous 4-bit counter IC, the 4520, which has two 4-bit counters inside. So just cascade two of the counters with a 3-input AND gate that decodes count "15" and use its output to Enable the 2nd counter part. Then the 4520 is a syncronous 8-bit counter and you can use 6-bits and decode it with a gate like you want.Look in Google for Binary Clock Circuit. Many of them are there. Quote Link to comment Share on other sites More sharing options...
dat3 Posted November 28, 2006 Report Share Posted November 28, 2006 I built my clock using decade counters and BCD-7 segment decoders. Is this going to be a completely digital clock?What are you using to make your oscillator? Be sure to put a schmitt trigger at the output of the timing circuit so you get rid of any bouncing. Quote Link to comment Share on other sites More sharing options...
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