Files
roro9stack/site/content/guide/gnss.md
T
twislaandClaude Sonnet 5.5 2f1befa7f5
Site / build (pull_request) Successful in 8s
Site: the user guide (phase 2): the basics, one page per App, Settings and Updates
Eleven pages under /guide/, written from the README, the milestone documents
and the Apps' own source: the keys, the Launcher, the Status Bar and the first
start; the LoRa Scanner, GNSS, Gemini, IRC, Wi-Fi tools, Notes, Storage and
System; Settings (with Wi-Fi) and Updates. Real screenshots where the site has
them, a Guide link in the navigation, and the home page points to it.

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EhqxQ49eCju4CzKYNjZzwT
2026-10-06 20:38:40 +02:00

1.8 KiB

+++ title = "GNSS" description = "Where you are and which satellites you can see, from the Cap's receiver, with Tracks saved to the SD card as GPX." weight = 3 [extra] tag = "GNSS" screens = ["sky.png"] +++

GNSS needs the Cap LoRa-1262, an antenna with a view of the sky, and Settings → GNSS switched On. Otherwise the App says GNSS is off (or paused, when "Pause GNSS for LoRa" has put the receiver on standby while the radio listens). A first fix outdoors can take a while: the App says how long it has been searching.

Position

The first view shows the fix (No Fix, 2D Fix or 3D Fix, and how many satellites it uses), then:

  • Lat and Lon, in decimal degrees or degrees, minutes and seconds (Settings → Coordinates);
  • the Locator, the Maidenhead grid square;
  • Altitude, Speed and the direction you are moving;
  • HDOP, the horizontal precision: a smaller number is better;
  • the Time, in UTC.

Once there is a fix, the device's clock follows it.

Sky

Tab switches between Position and Sky: a circle with N, E, S and W, where each satellite is a dot, coloured by constellation, and filled when the receiver uses it. A legend counts, for each constellation (GPS, GLONASS, Galileo, BeiDou), the satellites used and in view.

Tracks

r starts recording a Track: the route is saved as a GPX file on the SD card, in /gnss/tracks (named by date and time), and the Status Bar shows REC. Press r again to stop. A Track keeps recording with the App closed. It needs a card and a clock (a fix or Wi-Fi sets it); if it cannot start, the App says why: GNSS is off, No SD card or Waiting for the time. The Storage App opens a .gpx file and shows its points, start, duration and distance.