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Position Configuration

The positon config options are: GPS Enabled, GPS Update Interval, GPS Attempt Time, Fixed Postion, Smart Broadcast, Broadcast Interval and Position Packet Flags. Position config uses an admin message sending a Config.Position protobuf.

Position data from GPS is provided by either the radio or your paired phone. Position data is not required to use Meshtastic but time calculations require at least one device on the mesh have either a gps or internet connection for time.

Position Config Values

GPS Enabled

Acceptable values: true or false

Enabled by default. Should the device GPS be enabled for this node?

GPS Update Interval

How often should we try to get GPS position (in seconds), or zero for the default of once every 30 seconds, or a very large value (maxint) to update only once at boot.

GPS Attempt Time

How long should we try to get our position during each GPS update interval attempt? (in seconds) Or if zero, use the default of 30 seconds.

Fixed Position

Acceptable values: true or false

Off by default

If set, this node is at a fixed position. The device will generate GPS updates at the regular GPS update interval, but use whatever the last lat/lon/alt it saved for the node. The lat/lon/alt can be set by an internal GPS or with the help of the mobile device's GPS.

Smart Broadcast

Acceptable values: true or false

On by default

Smart broadcast will send out your position at an increased frequency only if your location has changed enough for a position update to be useful.

Smart broadcast complements broadcast interval (doesn't override that setting) but will apply an algorithm to more frequently update your mesh network if you are in motion and then throttle it down when you are standing still. If you use this feature, it's best to leave broadcast interval at the default.

Smart broadcast will calculate an ideal position update interval based on the data rate of your selected channel configuration.

Broadcast Interval

Default of 0 is 15 minutes

If smart broadcast is of we should send our position this often (but only if it has changed significantly)

The GPS updates will be sent out every Broadcast Interval, with either the actual GPS location, or an empty location if no GPS fix was achieved. This defaults to broadcast every 15 minutes.

Position Flags

Bit field of boolean configuration options for POSITION messages (bitwise OR of PositionFlags)

ValueDescription
POS_UNDEFINEDRequired for compilation
POS_ALTITUDEInclude an altitude value (if available)
POS_ALT_MSLAltitude value is MSL
POS_GEO_SEPInclude geoidal separation
POS_DOPInclude the DOP value ; PDOP used by default, see below
POS_HVDOPIf POS_DOP set, send separate HDOP / VDOP values instead of PDOP
POS_SATINVIEWInclude number of "satellites in view"
POS_SEQ_NOSInclude a sequence number incremented per packet
POS_TIMESTAMPInclude positional timestamp (from GPS solution)
POS_HEADINGInclude positional heading (from GPS solution)
POS_SPEEDInclude positional speed (from GPS solution)

Position Config Client Availability

info

All position config values except for postion flag are available on iOS, iPadOS and macOS at Settings > Radio Configuration > Position.

caution

Altering/disabling the GPS functionality does not mean that you will be unable to be found. Via triangulation of your radio, location may be given up to someone if they are determined enough.