It's been 3 weeks since the last calibration. Clock is about 0.2 sec late (a subjective estimate, holding clock side-by-side with time.is). Drift not large enough for recalibration yet.
Battery is at 3.006V.
A project log for Remarkably Accurate Quartz Clock
Shooting for 10 sec/year accuracy with an ATmega and software-based, temperature-aware frequency correction
It's been 3 weeks since the last calibration. Clock is about 0.2 sec late (a subjective estimate, holding clock side-by-side with time.is). Drift not large enough for recalibration yet.
Battery is at 3.006V.
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