# ArduSub: Using IMU for horizontal positioning

**URL:** <https://discuss.bluerobotics.com/t/ardusub-using-imu-for-horizontal-positioning/399>\
**Category:** ArduSub\
**Tags:** positioning\
**Created:** [July 26, 2016, 2:06am UTC](https://discuss.bluerobotics.com/t/ardusub-using-imu-for-horizontal-positioning/399 "2016-07-26T02:06:16Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![rjehangir](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.bluerobotics.com/rjehangir/32/671_2.png) [@rjehangir](https://discuss.bluerobotics.com/u/rjehangir)\
**Post date:** [July 26, 2016, 2:14am UTC](https://discuss.bluerobotics.com/t/ardusub-using-imu-for-horizontal-positioning/399/2 "2016-07-26T02:14:20Z")

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Hi Magnus,

You can get the rough position from inertial data only. Keep in mind that it will drift quite a bit. @jaxxzer has spent some time testing this and has some videos on Youtube of the BlueROV reacting to position changes with only inertial sensing.

I’ll point him towards this post.

-Rusty

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