clock question

Archiver

Hello,


I am building a prject that needs to be able to hold the time. I don't
have the money to buy the clock module from parallax so I was wondering if
there was anyway that I would be able to connect the BS2 to a watch and us
that to hold the time even when the BS2 is off. If you know any other way it
too would be very usefull. Thank you very much for your help.

Jim
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Archiver

Hi Jim,

I'm sure you'll get alot of good suggestions from the list. One popular
clock IC is the NJU6355 8 pin serial interface clock chip. Available from
digi-key for about $2.00.

This clock chip requires a 32.768 Khz crystal also available from digi-key
for around a dollar.

A large backup capacitor can be used to run the clock for a while without
main power.

Many on this list got their start with stamps using Scott Edwards data
collection proto-board kit. This most excellent kit uses the NJU6355 clock
for time keeping. I believe software examples can be found on his web site
for talking with the clock.
http://www.seetron.com/cft.htm

Steve






At 12:02 AM 11/29/2000 -0000, you wrote:
>Hello,
>
>
> I am building a prject that needs to be able to hold the time. I don't
>have the money to buy the clock module from parallax so I was wondering if
>there was anyway that I would be able to connect the BS2 to a watch and us
>that to hold the time even when the BS2 is off. If you know any other way it
>too would be very usefull. Thank you very much for your help.
>
> Jim
>___________________________________________________________________________
__________
>Get more from the Web. FREE MSN Explorer download : http://explorer.msn.com
>
>
>
>