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User avatar
By sr205347d
#224935
Now that I am logging data with my OLA, I want to look at it. Does anyone have any recommendations for plotting software that is cheap and easy? (By easy, I mean that I studied engineering back in college, but just retired after a career as a pilot, so, no coding, please.)

Also, could someone point me to some info on how to use the Accelerometer Digital Low Pass Filter? (And, an ignorant question: Why would you filter it real time rather than smoothing it later? Wouldn't that slow down your logging?)

Thanks!
Andy
User avatar
By PaulZC
#224951
Hi Andy,
I know you said "no coding" but if you do find you have time on your hands, please do have a look at Python. It is really easy to learn. Python and Matplotlib will make it really easy to visualize your data.
Without coding: the OLA logs data in Comma Separated Value (CSV) format which any spreadsheet software can open or import, Microsoft Office Excel and LibreOffice Calc included. Once you have imported your data from the log file, you can create charts to visualize it.
You can adjust the IMU digital low pass filter settings by opening Menu option 3. Options 7 and 8 will enable and configure the accelerometer filter. The filtering is done inside the IMU chip itself so it has no effect on the logging speed. It depends on your application whether pre-filtered data is better for you than the noisy 'raw' data. Give the settings a try and shout if you need more advice.
Best wishes,
Paul
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