doc: Dev snippet to connect PlanktoScope to LAN (#559)

Author: sonnyp

documentation/docs/community/contribute/tips-and-tricks.md

@@ -19,6 +19,44 @@ You can find the latest build in [actions](https://github.com/PlanktoScope/Plank
 
 See [Backup and Restore SD Card image](#backup-and-restore-sd-card) below to write the `.img.xz` file to the sdcard
 
+## Connect to router
+
+The default behavior of the PlanktoScope is to act as a router to connect your computer to it directly via WiFi or Ethernet.
+
+If you have a LAN it may be more convenient to connect the PlanktoScope to it and act as a simple client.
+
+```sh
+# Ethernet
+nmcli connection down eth0-static
+nmcli connection up eth0-default
+
+# Wifi
+nmcli connection down wlan0-hotspot
+```
+
+<details>
+    <summary>Revert changes</summary>
+
+```sh
+# Ethernet
+nmcli connection down eth0-default
+nmcli connection up eth0-static
+
+# Wifi
+nmcli connection up wlan0-hotspot
+```
+</details>
+
+Your PlanktoScope should be accessible via its hostname which you can retrieve from the PlanktoScope with `hostnamectl`
+
+You can then ssh into it with `ssh://pi@pkscope-example-name-0000`
+
+And access the UI with http://pkscope-example-name-0000/
+
+If that doesn't work, type `nmap -sn 192.168.1.0/24` from your computer to find the PlanktoScope hostname and/or ip address.
+
+See also the operating guide [Networking](https://docs-edge.planktoscope.community/operation/networking/)
+
 ## Backup and Restore SD Card
 
 You will need to plug the SD card into your computer.