[time-nuts] On Setting Precision Clock

[Brooke Clarke]

Hi David:

Yes, I like it.

Should Increment and Decrement work on the whole counter?  for example 
when changing minutes you can only increment or decrement the minutes 
digit and the 10 minute digit follows?

Thanks & Have Fun,

Brooke

David Forbes wrote:

>At 6:29 PM -0700 7/21/06, Brooke Clarke wrote:
>  
>
>>Hi:
>>
>>I've been working on making a LCD based clock where the PIC
>>microcontroller uses a precision frequency source as it's heartbeat.
>>Today I got the LCD navigation and time-date setting to work, but don't
>>like it.  The current version stops the clock and then uses the cursor
>>and blink hardware features of the LCD, but the problem is that cursor
>>and blink are global, i.e. they can not be used when the LCD is being
>>updated constantly (like once each second).  So I'm thinking of better
>>ways to set the clock and my current idea is to use a couple of
>>characters at the very upper right of the LCD is indicators.  They might
>>be HH, MM, SS, YR, MO, DY or others, and can be changed by the Select
>>button.  Then pressing the Increment or decrement buttons would change
>>the associated counter.   This way you would not loose the 1 PPS edge
>>when changing the time or date.
>>http://www.pacificsites.com/~brooke/PRC68COM.shtml#PC3      <- as it is
>>today
>>
>>Any thoughts?
>>
>>Have Fun,
>>
>>Brooke Clarke
>>    
>>
>
>Brooke,
>
>You can make some digits blink by changing them to spaces every other 
>time you write out the string to the LCD. Write the string out about 
>4 times per second, resulting in two blinks per second. It's a bit 
>more work, but it gives better control of the display.
>
>  
>

-- 
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