Go Down

Topic: Can't find old topic on clock compensation (Read 4 times) previous topic - next topic

Jimmy60

Past couple of days? Have you checked your browser history?

johncc

You're over my head but I remember seeing something in the near/medium past... yes, I found this in my browser cache.  I looked at it and --given what I've read about arduino-not-very-accurate clock--wondered if it was even "on the level"...
http://www.instructables.com/id/Make-an-accurate-Arduino-clock-using-only-one-wire/


Jack Christensen


You're over my head but I remember seeing something in the near/medium past... yes, I found this in my browser cache.  I looked at it and --given what I've read about arduino-not-very-accurate clock--wondered if it was even "on the level"...
http://www.instructables.com/id/Make-an-accurate-Arduino-clock-using-only-one-wire/


Seems like a roundabout way of just using the system clock for timing. Could have been done with zero wires, just configure an interrupt on one of the timers.
MCP79411/12 RTC ... "One Million Ohms" ATtiny kit ... available at http://www.tindie.com/stores/JChristensen/

johncc



You're over my head but I remember seeing something in the near/medium past... yes, I found this in my browser cache.  I looked at it and --given what I've read about arduino-not-very-accurate clock--wondered if it was even "on the level"...
http://www.instructables.com/id/Make-an-accurate-Arduino-clock-using-only-one-wire/


Seems like a roundabout way of just using the system clock for timing. Could have been done with zero wires, just configure an interrupt on one of the timers.


Yeah, looking at it more carefully I see that the gist of it is he is just adjusting his clock readings is software by ~ 1 sec per hour...

dhenry

Quote
it was even "on the level"...


What he was doing is totally unnecessary, unimpressive, overly complicated and fairly inaccurate.

With NO external hardware (including a wire), you can achieve better timing than he did.

Go Up