1st Graphs

[chris24g]

As you can see, one of the graphs is glitchy, probably due to condensation. I will try the zip lock method next.

[chris24g]

after 4 attempts, this is the best I've been able to achieve. the ratez parameter is being the most troublesome. is this log usable? the sample time is over 2 hours (i fell asleep)

[JussiH]

This is with the ziplock bag? You are freezing with the bag open, and closing bag/container inside the freezer? If it keeps acting up like this, send me or Paul an email and we will work out something. However, I am pretty sure that it is a condensation problem you are seeing. You can add a small silica sachet or make a fabric bag with rice and stick that inside the ziplock bag - that should suck up any excess moisture in the air around the board.

Jussi

[bn999]

This might be ok. Could you post a graph of voltages 1,2 & 3 instead? What we see here is the rate data filtered through the default calibration parameters, which could be making it look strange.

[chris24g]

Voltage Graph

Temp Graph

[bn999]

That's keeper if you got sufficient temperature range.

[chris24g]

I uploaded the wrong Voltage graph, so I changed it to the correct one.

My temps were about -27 to 50

Here is my AQ container. It's a rubber lipped sealing jar, open cell foam from a camera case and some anti-static bubble wrap as a final insulator for the board.

[kinderkram]

Looking good, Chris!
Only the round container makes it a bit more complicated to level the board while freezing.

btw: you're using an old version of QGC. The recent one has the double MAGZ eliminated.

[funth1ngs]

Hi,

here are some of my graphs. I calibrated 6 times and they always look the same.

Voltage 1-3, the noisy curve is Voltage 3:

Rate, the noise in the green curve is always arround 375.000 data points in every calibration:

Acc, the noise always occurs at the same time:

I flashed v6.6, should I try v6.5 for calibration? What do you think?

Cheers,
Heiko

[bn999]