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airpartners / logger

Code and documentation associated with the air quality data logger/sensor box.
https://github.com/airpartners/logger/wiki
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Raspberry pi data logging missed first ~8 hours of sampling from 24 hour test #29

Open anushadatar opened 3 years ago

anushadatar commented 3 years ago

The most recent experiment results show that the CPC was logging data from the start of the experiment (8:25 AM) while the raspi log, while it was printing data at the start of the experiment, only shows data from about 3:11 PM on.

anushadatar commented 3 years ago

I'll add more context to this bug report after doing more analysis, but here is a link to the location of the data and some exploration in the logger data analysis repository.

anushadatar commented 3 years ago

We also need to determine how much of this issue stems from storage (i.e. does this cap at 5.6 MB?) vs. a clock delay vs. some other shift.

anushadatar commented 3 years ago

It also looks like some of this could be due to a power interruption, which implies we need to figure out how to do some soft shutdown and re-engaging with the same data file as power interruptions are very impossible in the field.

anushadatar commented 3 years ago

related to #41