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Copy file name to clipboardExpand all lines: README.md
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Documentation
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--------------
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***[RTK Product Manual](https://docs.sparkfun.com/SparkFun_RTK_Firmware/intro/)** - A detail guide describing all the various software features of the RTK product line. Essentially it is a manual for the firmware in this repository.
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***[RTK Product Manual](https://docs.sparkfun.com/SparkFun_RTK_Firmware/)** - A detail guide describing all the various software features of the RTK product line. Essentially it is a manual for the firmware in this repository.
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***[RTK Facet L-Band Hookup Guide](https://learn.sparkfun.com/tutorials/sparkfun-rtk-facet-l-band-hookup-guide)** - Hookup guide for the SparkFun RTK Facet L-Band.
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***[RTK Facet Hookup Guide](https://learn.sparkfun.com/tutorials/sparkfun-rtk-facet-hookup-guide)** - Hookup guide for the SparkFun RTK Facet.
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***[RTK Express Hookup Guide](https://learn.sparkfun.com/tutorials/sparkfun-rtk-express-hookup-guide)** - Hookup guide for the SparkFun RTK Express and Express Plus.
Copy file name to clipboardExpand all lines: docs/configure_base.md
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For users who return to the same base position or monument, the coordinates can be saved to a 'Commonly Used Coordinates' list. A nickname and the X/Y/Z positions are saved to the list. Any record on the list can be loaded from the list into the X/Y/Z fields allowing quick switching without the need to hand record or re-enter coordinates from day-to-day repositioning of the base.
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## RTCM Message Rates
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When the device is in Base mode, the fix rate is set to 1Hz. This will override any Rover setting.
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Additionally, RTCM messages are generated at a rate of 1Hz. If lower RTCM rates are desired the RTCM Rates menu can be used to modify the rates of any supported RTCM message. This can be helpful when using longer-range radios that have lower bandwidth.
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## Supported Lat/Long Coordinate Formats
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When entering coordinates for a fixed Base in Geodetic format, the following formats are supported:
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* DD.ddddddddd (ie -105.184774720, 40.090335429)
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* DDMM.mmmmmmm (ie -10511.0864832)
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* DD MM.mmmmmmm (ie 40 05.42013)
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* DD-MM.mmmmmmm (40-05.42013)
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* DDMMSS.ssssss (-1051105.188992)
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* DD MM SS.ssssss (-105 11 05.188992)
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* DD-MM-SS.ssssss (40-05-25.2075)
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These coordinate formats are automatically detected and converted as needed. The coordinates are displayed in the format they are entered. If a different format is desired, the coordinate display format can be changed via the serial Base menu.
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For more information about coordinate formats, check out this [online converter](https://www.earthpoint.us/convert.aspx).
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## Assisted Base
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An Assisted Base is where a temporary base is set up to Survey-In its location but is simultaneously provided RTCM corrections so that its Survey-In is done with very precise readings. An assisted base running a Survey-In removes much of the relative inaccuracies from a Rover-Base system. We've found an Assisted Base varies as little as 50mm RMS between intra-day tests, with accuracy within 65mm of a PPP of the same location, same day.
Because of the nature of these controls, the AP config page is different than the terminal menu.
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*System Config Menu on WiFi AP Config Page*
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### System Initial State
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At power on, the device will enter either Rover or Base state.
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### Log to SD
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If a microSD card is detected, all messages will be logged.
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### Max Log Time
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Once the max log time is achieved, logging will cease. This is useful for limiting long-term, overnight, static surveys to a certain length of time. Default: 1440 minutes (24 hours). Limit: 1 to 2880 minutes.
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### Max Log Length
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Every 'max long length' amount of time the current log will be closed and a new log will be started. This is known as cyclic logging and is convenient on *very* long surveys (ie, months or years) to prevent logs from getting too unwieldy and helps limit the risk of log corruption. This will continue until the unit is powered down or the *max logging time* is reached.
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### Start New Log
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Pressing the 'Start New Log' button will close the current log. A new log will be opened when the AP Config page is closed and the unit restarts. This can be helpful in the field when a certain set of coordinates or feature marks need to be recorded in close proximity to one another. By dividing up the logs, the work can be more easily identified.
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### Bluetooth Protocol
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By default, the RTK products use Bluetooth v2.0 SPP (Serial Port Profile) to connect to data collectors. Nearly all data collectors support this protocol. The RTK product line also supports BLE (Bluetooth Low Energy). The BLE protocol has a variety of improvements but very few data collectors support it.
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**Note:** Bluetooth SPP cannot operate concurrently with ESP-Now radio transmissions. Therefore, if you plan to use the ESP-Now radio system to connect RTK products, the BLE protocol must be used to communicate over Bluetooth to data collectors. Alternatively, ESP-Now works concurrently with WiFi so connecting to a data collector over WiFi can be used.
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### Enable Factory Defaults
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Factory Defaults will erase any user settings and reset the internal receiver to stock settings. Any logs on SD are maintained. To prevent accidental reset the checkbox must first be checked before the button is pressed.
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### SD Card
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Various stats for the SD card are shown.
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### Update Firmware
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New firmware may be uploaded via WiFi to the unit. See [Updating Firmware from WiFi](https://docs.sparkfun.com/SparkFun_RTK_Firmware/firmware_update/#updating-firmware-from-wifi) for more information.
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### Reset Counter
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A counter is displayed indicating the number of non-power-on-resets since the last power-on.
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Please see the System Menu [WiFi Interface](https://docs.sparkfun.com/SparkFun_RTK_Firmware/menu_system/#wifi-interface).
Copy file name to clipboardExpand all lines: docs/configure_gnss.md
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The GNSS Configuration menu allows a user to change the report rate, dynamic model, and select which constellations should be used for fix calculations.
*The most common settings on the RTK Device WiFi AP Config*
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The Dynamic Model can be changed but it is recommended to leave it as *Portable*. For more information, please refer to the [ZED-F9P Integration Manual](https://cdn.sparkfun.com/assets/learn_tutorials/1/8/5/7/ZED-F9P_IntegrationManual__UBX-18010802_.pdf).
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## Min SV Elevation and C/N0
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*GNSS menu showing Minimum SV Elevation and C/N0*
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A minimum elevation is set in degrees. If a satellite is detected that is below this elevation, it will be *excluded* from any GNSS position calculation.
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A minimum C/N0 is set in dB. If a satellite is detected that is below this signal strength, it will be *excluded* from any GNSS position calculation.
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## Constellations Menu
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[](https://cdn.sparkfun.com/assets/learn_tutorials/2/1/8/8/SparkFun_RTK_ExpressPlus_Receiver_Constellations.jpg)
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**Note:** The message report rate is the *number of fixes* between message reports. In the image above, with GSV set to 4, the NMEA GSV message will be produced once every 4 fixes. Because the device defaults to a 4Hz fix rate, the GSV message will appear once per second.
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The following 67 messages are supported for Bluetooth output and logging:
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The following 120 messages are supported for Bluetooth output and logging:
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