Clocks - Integrated?

[bobleny]

Im doing a project, and it's really sorta small, ... its a 4" cube..... I'm trying to build a binary clock for it.


current time - for me anyways

  O o O o
o O o o O o

where "O" is on and "o" is off. Does anyone have any ideas for this? It is running off of a small voltage probably 5 volts...

I know I could build a 60hrz counter useing some 555 timers (yeah me and thoes 555s...) but i'd like something much more accurate.

Do you know of a good way to do this? Maybe an integrated curcuit of some sort?

 

[bobleny]

If, you don't know about ASCII binary, don't worrie about, it's really not needed at this point. All I need is a clock...

Thanks

 

[Ughadoo]

I know I could build a 60hrz counter useing some 555 timers (yeah me and thoes 555s...) but i'd like something much more accurate.

Do you know of a good way to do this? Maybe an integrated curcuit of some sort?

A very simple and accurate way is through a 32768 kHz crystal oscillator followed by a clock divider.

dt26_dt38.pdf

 

[Ughadoo]

A 4060 is even better than the 4020 because you can use its internal ports to create the 32768 kHz, as in the circuit and datasheet below:



CD4020BC.pdf

 

[bobleny]

Thanks you!

This is good.