choice of parameters - Githubissues

jvoermans / Wind_Input_V1

Sketch for measuring pressure and IMU using Platformio

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choice of parameters #21

Closed jerabaul29 closed 1 year ago

jerabaul29 commented 1 year ago

@jvoermans ,

any reason for choosing 20Hz update frequency instead of 10Hz? I wonder if it would be easier to get things working with 10Hz, would this be a problem?
in particular regarding the BMP390: looking at the datasheet: https://www.bosch-sensortec.com/media/boschsensortec/downloads/datasheets/bst-bmp390-ds002.pdf 3.9.1, "Measurement time", the highest resolution is only running at worst case around 12Hz.

jvoermans commented 1 year ago

The 20Hz has post-processing advantage over 10Hz. But 10Hz is fine too. There are some features on the BMP390 which improve measurements, but at a cost of lower sampling rate. I think the 12Hz refers to that... I think maximum we can get with the settings I prefer is 22.5 Hz or something if I remember correctly.

jerabaul29 commented 1 year ago

Ok, I can go for 20Hz if it is better for post processing, there should be enough RAM etc for that :) .

Yes, there is a trade-off frequency vs accuracy. I can choose a mode with lower accuracy but better frequency so things work at 20 Hz :) .

jerabaul29 commented 1 year ago

set to 20Hz