ArcGIS QuickCapture
ArcGIS QuickCapture is a popular offering from Esri that works well with SparkFun RTK products.
ArcGIS QuickCapture connects to the RTK device over TCP. In other words, the RTK device needs to be connected to the same WiFi network as the device running QuickCapture. Generally, this is an iPhone or iPad operating as a hotspot.
!!! note The iOS hotspot defaults to 5.5GHz. This must be changed to 2.4GHz. Please see Hotspot Settings.
The RTK device must use WiFi to connect to the iPhone or iPad. In the above image, the device will attempt to connect to iPhone (a cell phone hotspot) when WiFi is needed.
Next, the RTK device must be configured as a TCP Server. The default port of 2948 works well. See TCP/UDP Menu for more information.
Once the RTK device connects to the WiFi hotspot, its IP address can be found in the System Menu. This is the number that needs to be entered into QuickCapture. You can now proceed to the QuickCapture app to set up the software connection.
From the main screen, press the hamburger icon in the top left corner.
Press the Settings button.
Select the Location Provider option.
Select Via Network.
Enter the IP address and port previously obtained from the RTK device and click ADD.
That provider should now be shown connected.
From the main screen, click on the plus in the lower left corner and then BROWSE PROJECTS.
For this example, add the BioBlitz project.
Above, we can see the GPS accuracy is better than 1ft. Click on the map icon in the top right corner.
From the map view, we can see our location with very high accuracy. We can now begin gathering point information with millimeter accuracy.
ArcGIS Survey123
 ArcGIS Survey123 Home Screen
ArcGIS Survey123 is a popular offering from Esri that works well with SparkFun RTK products.
ArcGIS Survey123 connects to the RTK device over TCP. In other words, the RTK device needs to be connected to the same WiFi network as the device running ArcGIS. Generally, this is an iPhone or iPad.
!!! note The iOS hotspot defaults to 5.5GHz. This must be changed to 2.4GHz. Please see Hotspot Settings.
 Adding WiFi network to settings
The RTK device must use WiFi to connect to the data collector. Using a cellular hotspot or cellphone is recommended. In the above image, the device will attempt to connect to iPhone (a cell phone hotspot) when WiFi is needed.
 TCP Server Enabled on port 2948
Next, the RTK device must be configured as a TCP Server. The default port of 2948 works well. See TCP/UDP Menu for more information.
 RTK device showing IP address
Once the RTK device connects to the WiFi hotspot, its IP address can be found in the System Menu. This is the number that needs to be entered into ArcGIS Survey123. You can now proceed to the ArcGIS Survey123 app to set up the software connection.
 ArcGIS Survey123 Home Screen
From the home screen, click on the 'hamburger' icon in the upper right corner.
 ArcGIS Survey123 Settings Menu
From the settings menu, click on the Settings gear.
 ArcGIS Survey123 Settings List
From the settings list, click on Location.
 ArcGIS Survey123 List of Location Providers
Click on the Add location provider.
 ArcGIS Survey123 Network Connection Type
Select Network.
 ArcGIS Survey123 TCP Connection Information
Enter the IP address previously found along with the TCP port. Once complete, click Add.
 ArcGIS Survey123 Sensor Settings
You may enter various sensor-specific settings including antenna height, if desired. To view real-time sensor information, click on the satellite icon in the upper right corner.
 ArcGIS Survey123 Sensor Data
The SparkFun RTK device's data should now be seen. Click on the Map icon to return to the mapping interface.
 ArcGIS Survey123 Map Interface
Returning to the map view, we can now begin gathering point information with millimeter accuracy.