# RS485 through the tether

**URL:** <https://discuss.bluerobotics.com/t/rs485-through-the-tether/2209>\
**Category:** Blue Robotics Products\
**Created:** [February 23, 2018, 10:59am UTC](https://discuss.bluerobotics.com/t/rs485-through-the-tether/2209 "2018-02-23T10:59:12Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![patrickelectric](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.bluerobotics.com/patrickelectric/32/2162_2.png) [@patrickelectric](https://discuss.bluerobotics.com/u/patrickelectric)\
**Post date:** [February 23, 2018, 1:01pm UTC](https://discuss.bluerobotics.com/t/rs485-through-the-tether/2209/2 "2018-02-23T13:01:58Z")

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Hi @etienne,

> [@etienne](#):
>
> Has anyone passed RS485 throught the tether for sonar/altimeter?

Yes, you can use the RS485 without problems because of the differential pair.

> [@etienne](#):
>
> Alternatively, can I pass it through the ROV’s raspbery pi?

Yes, it’s possible to use a python script or netcat to create a bridge between your sensor and the top side computer.

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