Verify the serial connections, cycle power on the unit, and try again. If you unzipped the files to another directory follow option 2 below. Unzip the files in the archive by running the downloaded executable file. This version will clear all user settings. PaulS Brattain Member Posts:

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Navigate your browser to the C: Hope this is of some assistance. GPS is actually fairly simple to interface. This is intended for a weather balloon launch project, and I was considering using this data to trigger certain action based on an altitude but I simply can’t get reasonably reliable altitude readings, as gps81x can see: During the upload, the display will indicate ‘Software Loading Changes made from version 3.

Garmin GPS 18x LVC, 5m High-Sensitivity Receiver

Added map unlock support. Click ‘OK’ to begin the software upload.

You may now browse for the correct region file to upload. Or is it something to do with Arduino communicating with Linux I’m on Ubuntu by the way There’s probably more information I could provide but I really don’t know what would be useful.


The GPS 18x is not properly connected to your computer. This version will clear all user settings. The checksum algorithm is well known and code is available for it. When the upload is completed, the unit will reset itself and turn on normally. Tps18x can be used with the USB versions of this product.

Garmin GPS 18x LVC, 5m High-Sensitivity Receiver

I don’t understand, Arduino uses pins 0 and 1 whenever you use Serial. The unit may already be in Garmin update mode. Normally, you will see a confirmation window indicating that you have connected to the unit. The art of getting good answers lcc in asking good questions.

Garmin: GPS 18x PC/LVC Updates & Downloads

If you unzipped the files to C: Fixed factory firmware flash capabilities. Power it with regulated 5V e. I suspect that there is a wiring problem, or the sketch has changed.

Fixed automatic velocity filtering. Installation Instructions Download the appropriate self-extracting archive file onto your hard drive.

There are still sentences that simply need extra attention in order to be able to get them to output correctly. Besides, Garmin binary is a polled mode; it doesn’t automatically spew data like NMEA – you must ask for it.


Thanks for all the suggestions, I think edringel is on to something in that GPS is apparently tricky to work with I tried Serial.

Change History Changes made from version 3. Lvd just using the serial. Unless you plan on sending commands to configure the GPS you can actually run the GPS and debug with serial prints on the same hardware serial port without having to use NewSoftSerial as long as you don’t mind unplugging the GPS every time you upload a sketch.

Change to the directory in which you unzipped the files, i. Select the appropriate serial port and click ‘OK’ to begin the software upload. Better handling for leap second data storage especially over long periods of non-use. Fixed problem with almanac data not outputting.