home.md

@@ -40,6 +40,7 @@ This guide was updated last on 2023-02-23.
   - [Software versions](#software-versions)
   - [Network](#network)
   - [Bash alias commands](#bash-alias-commands)
+  - [Fixed USB port names](#fixed-usb-port-names)
 - [Other resources](#other-resources)
 
 ## The basics
@@ -384,6 +385,17 @@ To assign a static IP:
 ### Bash alias commands
 the commands like `startServer` and `startOuster` are defined in  `~/.bash_aliases`.
 
+### Fixed USB port names
+To have a fixed name to identify a USB device with, like done for the RTIS Sync USB connection, you can use a udev rule.
+
+1. Check the device you want to change with `lsusb` command and look for the ID in _xxxx:yyyy_ format.
+2. Create a new udev rule by doing opening `/etc/udev/rules.d/99-cosys.rules`
+3. In your rules, type the following information about the device:
+    ```bash
+    SUBSYSTEM="tty", ATTRS{idVendor}=="xxxx", ATTRS{idProduct}=="yyyy", SYMLINK+="NAME"
+    ```
+You can use the RTIS Sync USB as an example. 
+
 ## Other resources
 - Official Husky guide: https://docs.clearpathrobotics.com/docs/robots/outdoor_robots/husky/user_manual_husky
 - More Husky tutorials: https://docs.clearpathrobotics.com/docs/robots/outdoor_robots/husky/tutorials_husky