In order to control the drone from inside a structure that blocks or interfere with the WiFi signal from the Surface Unit, it is possible to connect the app via a wireless bridge which converts the signal into an Ethernet cable that be routed through the blocking walls/structures and into your device via an USB-Ethernet dongle or docking station. You can also further expand this setup by connecting an external monitor to the device/dongle.
The WiFi bridge can be any WiFi Access Point that supports "Bridged/Client mode" and we strongly recommend a 5GHz router which supports (5180GHz and upwards) and with omnidirectional antennas. If you have a access point running LEDE/OpenWRT you can follow this tutorial in order to set up the bridge. The additional access point needs to act as a client connecting to the Surface unit and should forward any DHCP requests to the Surface Unit so you phone/tablet will get an IP-address on the same sub-net as the Surface Unit (192.168.1.0/24).
In the case of a TP-Link router you can follow this tutorial or the steps below:
Set static IP to 192.168.0.10, netmask 255.255.255.0 and leave gateway blank. Then go to your browser to 192.168.0.254. Insert your login credentials (usually admin/admin) and select "Client Mode". Then survey for nearby networks. If the Surface Unit SSID does not appear on your list, it might be on a frequency not supported by the bridge. Some routers might have a "Channel Limit", try to disable this and scan again. Once the Bridge/Access point has locked onto the Surface Unit you can take the Ethernet cable from the PC and connect it to the Ethernet dongle to your device.
Keep in mind if you use a USB-C hub with Ethernet dongle and a HDMI output the phone might need additional power through the hub.
If you need furhter assitance setting up a customized setup like this please contact us at firstname.lastname@example.org and refer to this article.