Data Logging from a GPS with Windows Software. Data Acquisition » Serial Communications » Interfacing GPS Receivers.

Data Logging from a GPS with Windows Software. Data Acquisition » Serial Communications » Interfacing GPS Receivers.

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Connecting a GPS Receiver to a Laptop PCTo collect live data from your GPS receiver on your laptop you need: An RS2. USB- serial converter, to connect the GPS to the PC's com port. Our Windmill COMIML software runs under Windows 1. Vista and XP. It is available from our on- line data acquisition shop and is currently reduced from .

For example, Windmill software is currently being used by marine biologists to map coral reefs. A train company, on the other hand, is using Windmill COMIML and GPS receivers as part of a system to monitor their trains skidding on leaves or ice. The reason Windmill is so useful is that it works with a vast range of instruments, not just GPS receivers.

GPS TrackMaker is the most complete free program for GPS devices! Using the Real-Time Navigation routine you can go out with a GPS conected to a portable computer. EasyGPS free software for lowrance gps, magellan gps, garmin gps.

This means that you can capture all sorts of other data alongside the GPS information. For example, you can connect a sonar and record depth, or an anemometer and record wind speed. Any instrument with a serial port (RS2. RS4. 22, RS4. 85 and Modbus), that communicates using ASCII or binary messages, can be interfaced. It has never been easier, or cheaper, to collect spatially referenced data such as used in geographical information systems (GIS). The GPS receiver sends data in a string or sentence.

This might look something like this. GPGLL,5. 33. 0. 1. N,0. 02. 15. 3. 1,W,1. A< CR> < LF>. First, there is a NMEA code ($GPGLL), then the latitude, North or South, Longitude, East or West, Time (hhmmss), Data Valid (A), Carriage Return and Line Feed.

Windmill will collect this information as 2 . In this example, for the latitude channel, you might tell Windmill to search for 'GLL,' and extract up to the next comma. For the longitude channel you might search for 'N,' and extract until ','. Full details of how to do this are in the Com. Debug program Help and on our Parsing page. It will be saved and displayed in . These settings should get you started.

See also the Com. Debug program Help.

For latitude for example, search for . For longitude you could search for 'N,' and extract until comma. Repeat for any other instruments you have then select the Make IMS button. If you have any problems see the Windmill program Help, our Technical Support page or Trouble- Shooting below. It might be that you need to change your selections in Com. Debug (points 1 and 2 below), or it might be an issue with your USB- serial converter settings (point 3 below). To check this, in Com.

Debug's main window select Edit Instrument Timings. If you are logging data every second, for example, set the data persistance to 2 seconds. Depending on your converter make: a. Set the lowest latency possibleb. Set the lowest USB Transfer sizes possiblec. Set fast read and writes.

To do this you may need to use the converter's utility program, or to go through Windows Control Panel. If the latter, open Control Panel then choose Device Manager - Ports (COM) - your USB- to- serial converter. Right click and select Properties. Choose the Port settings tab then the Advanced button. You'll see a dialogue box like this.

To gain more details on any problem: whilst Logger or DDE Panel is running, open Com. Debug and view the Windmill Debug Screen. We'd love to know about your GPS and GIS projects using Windmill - with the possibility of featuring them in an Issue of Monitor. We would, of course, be happy to credit your company as the source of our story. Monitor is delivered monthly to over 3.