# ROS bridge on the Amiga ERROR: Unable to communicate with master!

**URL:** <https://discourse.farm-ng.com/t/ros-bridge-on-the-amiga-error-unable-to-communicate-with-master/130>\
**Category:** development\
**Created:** [March 24, 2023, 3:58am UTC](https://discourse.farm-ng.com/t/ros-bridge-on-the-amiga-error-unable-to-communicate-with-master/130 "2023-03-24T03:58:06Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![hoshinotsuki](https://yyz1.discourse-cdn.com/flex031/user_avatar/discourse.farm-ng.com/hoshinotsuki/32/53_2.png) [@hoshinotsuki](https://discourse.farm-ng.com/u/hoshinotsuki)\
**Post date:** [March 24, 2023, 3:58am UTC](https://discourse.farm-ng.com/t/ros-bridge-on-the-amiga-error-unable-to-communicate-with-master/130/1 "2023-03-24T03:58:06Z")

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Hi, Farm-NG Team!  
In the earlier today, I was able to connect to the ROS bridge.  
But after I shout down amiga and restarted it again, I am unable to get access to master.

 ![image](https://canada1.discourse-cdn.com/flex031/uploads/farm_ng/original/1X/a450d6e963c545d9363b20940efc25162ec12613.png)  
Please let me know what should I do.  
Thank you!

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**Author:** ![edgarriba](https://yyz1.discourse-cdn.com/flex031/user_avatar/discourse.farm-ng.com/edgarriba/32/6_2.png) [@edgarriba](https://discourse.farm-ng.com/u/edgarriba)\
**Post date:** [March 24, 2023, 10:24am UTC](https://discourse.farm-ng.com/t/ros-bridge-on-the-amiga-error-unable-to-communicate-with-master/130/2 "2023-03-24T10:24:08Z")

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hi! it might be possible that you have to setup again the `ROS_MASTER_URI` and `ROS_IP` environment variables.

Detailed instructions are here

> **[GitHub - farm-ng/amiga-ros-bridge: ROS bridge for the farm-ng Amiga platform](https://github.com/farm-ng/amiga-ros-bridge#specifying-the-ros-master)**
>
> ROS bridge for the farm-ng Amiga platform. Contribute to farm-ng/amiga-ros-bridge development by creating an account on GitHub.