I've been using my MONOCHRON for about a year, and it appears to drift much more than the other digital clocks I have. Right now it's approx. 3 minutes fast, and that's after adjusting it once before.
What's the standard drift value of the RTC? What might cause it to drift and how can I correct it?
What's the standard drift of the MONOCHRON?
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What's the standard drift of the MONOCHRON?
by wesg » Wed Jun 06, 2012 8:02 pm
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MacBook Pro 13" - Mountain Lion
Ubuntu Server - Nimitz - 9.25TB
4.0 GHz i7-950 watercooled workstation
Arduino / Arduino MEGA / Arduino Pro MINI / MONOCHRON clock
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wesg - Posts: 66
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Re: What's the standard drift of the MONOCHRON?
by adafruit_support_bill » Thu Jun 07, 2012 4:46 am
The DS1307 real-time clock chip in the Monochron may drift up to several seconds a day.
Some people have tweaked the accuracy with hand-selected crystals or modifications to the code. Others have retrofitted GPS modules to the clock for an accurate time-base.
The ChronoDot uses a higher-precision, temperature-compensated chip for more accuracy. It is software compatible with the DS1307 and should be possible to retrofit to a Monochron in the prototyping area. http://www.adafruit.com/products/255
Some people have tweaked the accuracy with hand-selected crystals or modifications to the code. Others have retrofitted GPS modules to the clock for an accurate time-base.
The ChronoDot uses a higher-precision, temperature-compensated chip for more accuracy. It is software compatible with the DS1307 and should be possible to retrofit to a Monochron in the prototyping area. http://www.adafruit.com/products/255
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