Timing drift

Projects Programming
1

Any information on timing drift. I'm recording temperature every second on ten minute intervals and noticed that there is a random timing drift from 2-7 mS per measurement which adds up to about 700 mS per 10 minute interval. Any software fixes that would address this?

Thanks

Justin Tabatchnick

2

Details are usually welcome

3

sounds like you're using delay() which won't account for processing time.

if you use millis(), set the next timestamp to the current one plus the desire interval

4

Does the board you're using use a resonator or a quartz crystal for timing? Resonator based boards like the UNO drift like crazy.