dansam8:
Hi
Does anyone know how to keep time on an arduino without an external RTC . Can u set the time through a serial connection and have it output to an LCD and if it is possible is it accurate
hope you can help thanks
Yes, Time library may be of use to you. However you would have to put a value on 'accurate' as using the arduino clock speed as the time base may not be accurate enough for your use. Mins per day may not be accurate using that way and then only an external RTC module would be useful for your application.