#NMEA USB GPS RECEIVER INSTALL#
USB Notes: requires a compatible USB product which the Digi product can install as a virtual serial port not all USB GPS will work Has separate GPS hardware built in with dedicated SMC connector for GPS antennaĬellular Notes: 'Possible' means some (but not all) cellular modules have GPS option and separate antenna is possible 'No' means even if cellular module has GPS, lack of second antenna connector means signal quality will be poor and unreliable. These products have the 'gps/0' port support for cell modem, serial or USB: Modelįor internal cell modem support, unit must have GPS antenna connected to secondary port Here is a screen shot from a Digi ConnectPort X4 with the BU-353 connected (and no, my desk is not moving at 1.07 knots - that is normal analog 'noise' in GPS systems): If a GPS data source exists, then the Digi product automatically shows you the GPS Position information on the product's web pages under Administration -> System Information -> Position. The external USB GPS model BU-353 sells online for between $35 and $40 in quantity one. Be warned that the cellular GPS is not free - you will need at least an external GPS antenna to obtain meaningful data, plus some cellular systems require a minimum level of cell service to exist before the GPS data can be accessed.
![nmea usb gps receiver nmea usb gps receiver](https://www.quark-elec.com/wp-content/uploads/2020/06/GPS-and-Heading-sensor-AS07-0183.png)
The NMEA sentence data returned from '/gps/0' might be from any valid GPS source - including one built into a cellular modem or an external USB GPS such as the USGlobalSat BU-353. If port '/gps/0' does not exist, then your firmware and/or hardware does not have the GPS service available. If there are no valid GPS hardware(s) present, then port '/gps/0' still exists but no data will be returned.
![nmea usb gps receiver nmea usb gps receiver](https://www.inventeksys.com/wp-content/uploads/EZ-GPS-G.jpg)
Only one Python script can open the port at a time - it cannot be shared. You will not need to set port settings like baud rate because you are not really talking to the hardware. Many Digi products supporting Python include a GPS service which you open as '/gps/0', treating it like a read-only serial port. Virtual GPS NMEA Access Virtual GPS Access