Network - FAQ

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This QTrobot FAQ is a summary of the issues from our Github repo. You can always open a new issue/feature request for any interfaces and we do our best to fix/implement them.

1. How to disable port forward on QTrobot?

Okay. here is the instruction how to disable port forwarding on QTrobot: - access QTrobot RPI via ssh. - navigate to ~/robot/autostarts and open start_qt_routes.sh for editing (e.g. using vim/nano) - comment this line exec echo "$QT_USERNAME" | sudo -kS iptables -t nat -A PREROUTING -p tcp --dport 80 -j REDIRECT --to-port 8080 - reboot the robot.

NOTICE: Doing this, you need to access QTrobot RPI web-config interface using http://qtrobot:8080 or http://192.168.100.1:8080

2.How do I setup Wifi on QTrobot?

Let me clarify the QTrobot WIFIs and web interface. As it has been explained in different places (#7) QTrobot has an RPI and one NUC PC.

  • RPI WIFI is configured as Hotsopt with unique ssid for each robot (e.g. QT100). the web interface is accessible via http://192.168.100.1:8080
  • NUC WIFI is free and you can use it to connect to the internet either via it's Ubuntu desktop, terminal programs via ssh or using NUC web interface via http://192.168.100.2:8080

The reason that web interface of RPI does not allow you to change its WIFI configuration is intuitive: you cannot access it remotely any more via its hotspot! QTrobot gave you three simple options to connect it to the internet:

  1. Using NUC WIFI
  2. Using an external WIFI dongle attached to RPI USB port (back of the robot)
  3. Using external Ethernet adapter attached to NUC USB-C port (see the attached picture)

Notice: It does not matter which option you use to connect the robot to the internet. The internet will be always shared and routed between RPI and NUC!

Notice: If you connect external WIFI dongle to the RPI 's USB port, you need to reboot the robot and then it will be shown up in the RPI web interface!

usbc-extention


Last update: February 6, 2020