# Accelerometer and Gyroscope Log Data

**URL:** <https://discuss.px4.io/t/accelerometer-and-gyroscope-log-data/10529>\
**Category:** Uncategorized\
**Created:** [April 16, 2019, 10:08pm UTC](https://discuss.px4.io/t/accelerometer-and-gyroscope-log-data/10529 "2019-04-16T22:08:53Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![CalvinK](https://discuss.px4.io/letter_avatar_proxy/v4/letter/c/ce73a5/32.png) [@CalvinK](https://discuss.px4.io/u/CalvinK)\
**Post date:** [April 16, 2019, 10:08pm UTC](https://discuss.px4.io/t/accelerometer-and-gyroscope-log-data/10529/1 "2019-04-16T22:08:53Z")

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I am trying to characterize the uncertainties of both the on board IMU’s for the pixhawk 4. From the u-log even though there are two sensors it only displays one set of accelerator information. Does anyone know how to get the raw data for both of the sensors?

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**Author:** ![CalvinK](https://discuss.px4.io/letter_avatar_proxy/v4/letter/c/ce73a5/32.png) [@CalvinK](https://discuss.px4.io/u/CalvinK)\
**Post date:** [April 17, 2019, 4:51pm UTC](https://discuss.px4.io/t/accelerometer-and-gyroscope-log-data/10529/2 "2019-04-17T16:51:59Z")

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Additionally since u-log only logs one sensor, which sensor is that?

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**Author:** ![Ahmed\_Elsafy](https://discuss.px4.io/user_avatar/discuss.px4.io/ahmed_elsafy/32/4093_2.png) [@Ahmed\_Elsafy](https://discuss.px4.io/u/Ahmed_Elsafy)\
**Post date:** [June 30, 2020, 11:53am UTC](https://discuss.px4.io/t/accelerometer-and-gyroscope-log-data/10529/3 "2020-06-30T11:53:46Z")

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Got any updates on that issue ?

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**Author:** ![AlexandreBorowczyk](https://discuss.px4.io/user_avatar/discuss.px4.io/alexandreborowczyk/32/12383_2.png) [@AlexandreBorowczyk](https://discuss.px4.io/u/AlexandreBorowczyk)\
**Post date:** [June 30, 2020, 12:35pm UTC](https://discuss.px4.io/t/accelerometer-and-gyroscope-log-data/10529/4 "2020-06-30T12:35:48Z")

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Have you look at the **SDLOG\_PROFILE** parameter?  
[https://dev.px4.io/master/en/advanced/parameter\_reference.html](https://dev.px4.io/master/en/advanced/parameter_reference.html)

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**Author:** ![Ahmed\_Elsafy](https://discuss.px4.io/user_avatar/discuss.px4.io/ahmed_elsafy/32/4093_2.png) [@Ahmed\_Elsafy](https://discuss.px4.io/u/Ahmed_Elsafy)\
**Post date:** [June 30, 2020, 3:42pm UTC](https://discuss.px4.io/t/accelerometer-and-gyroscope-log-data/10529/5 "2020-06-30T15:42:33Z")

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I have used profile 6 (sensor comparison), but couldn’t get a plot of the raw data for the two accelerometer on the online flight analysis tool. I just used flightplot locally and I can now see the raw data plot, I guess its a problem of my understanding of how to use the online tool.

I have been trying to understand how to get the raw data for the two sensors on mavros though, I have /mavros/imu/data\_raw and /mavros/imu/data topics only