[avr-chat] Error in Timing.

[Royce Pereira]

Hi,

I have designed a digital timer using ATMega8. The internal RC oscillator gave an 
error over a period of time, so I used a 4MHz crystal & programmed the fuse 
bits accordingly.

However, the Crystal oscillator also gives an error of about 5 seconds in 300 
seconds. I tried using different capacitor values at the crystals pins, but 
this made no difference.

I checked my code(TCNT0 values etc) and found no error there.

Is there a recommended way to get accurate timing(with a crystal or otherwise)?

Thanks,
--Royce
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