StartLine RaceBox Video Page
About StartLineStartLine is a free Android app for racing sailboats. It is free to the members of the StartLine racing team. To join the team you just need to be dedicated to making StartLine the best app for racing by suggesting improvements, sharing your race results, or contributing designs. If you are interested you can get a free trial license good for 30 days. It is renewable. You need to complete an online application that shows you understand what you are doing and assume all risks yourself. Once you demonstrate the commitment to joining this community, you will get a license that does not expire.
How it Works, What's Inside,
More on StartLineThe latest instructions (although out of date already) are HERE
There is also some video training on THIS page.
The First RaceBoxIt really is this simple. Of course, adding the heel function, the Stowe Terminal interface, and the GPS like in the box above is more complicated. But you can get NMEA data, correct it, send corrections back to NMEA, and data to StartLine with just the parts below.
Downloading Log Files using a Computer, Router, and WiFiDownloading log files can also be done using the Putty port without the router or WiFi. They can also be downloaded using a phone with an Android router app and SSH app. I hope to have a video on that soon. This video shows how to download the log files using WiFi and a Windows computer.
Using Bluetooth GPS Provider with a PluginBluetooth GPS Provider has been modified to work with StartLine. Thanks to Bjoem for the support. See the details HERE
There is also a video that walks through the process.
Full Version PCB LayoutThe layout if a combination of breakout boards from Sparkfun and Adafruit. Upper right is the Edison. Lower right is the accelerometer for the heel reading. The small board next to it is a level shifter and is necessary for any of the options. The board just under the Edison USB connectors level shifts to RS-232 for the Stowe Terminal. The board all the way to the left is the GPS. The larger red board is only necessary if you want to read the Stowe keys and you have the GPS installed.
2016 UpdateI no longer recommend using the MAX3232 part or the large nmea to i2c converter shown on the layout. Instead use one of the FTDI parts shown here.
They come in 1, 2 or 4 input versions. I have used the 2 and 4 input versions and now use the 4 input version:
Custom PCB VersionThe latest version is on a custom printed circuit board but the same thing can easily be done using a wire breadboard. It s a much simpler layout that the old version as it uses the FTDI chips.
RaceBox documentationDocumentation for building a StartLine RaceBox is on Google Drive. Members of the StartLine community who wish to build a RaceBox have access.
Debugging RaceBox SetupThis video applies to all versions of nmea. It is helpful to see where things really are and a video is good for that.
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The information on this web site has not been checked for accuracy. It is for entertainment purposes only and should be independently verified before using for any other reason. There are five sources. 1) Documents and manuals from a variety of sources. These have not been checked for accuracy and in many cases have not even been read by anyone associated with L-36.com. I have no idea of they are useful or accurate, I leave that to the reader. 2) Articles others have written and submitted. If you have questions on these, please contact the author. 3) Articles that represent my personal opinions. These are intended to promote thought and for entertainment. These are not intended to be fact, they are my opinions. 4) Small programs that generate result presented on a web page. Like any computer program, these may and in some cases do have errors. Almost all of these also make simplifying assumptions so they are not totally accurate even if there are no errors. Please verify all results. 5) Weather information is from numerious of sources and is presented automatically. It is not checked for accuracy either by anyone at L-36.com or by the source which is typically the US Government. See the NOAA web site for their disclaimer. Finally, tide and current data on this site is from 2007 and 2008 data bases, which may contain even older data. Changes in harbors due to building or dredging change tides and currents and for that reason many of the locations presented are no longer supported by newer data bases. For example, there is very little tidal current data in newer data bases so current data is likely wrong to some extent. This data is NOT FOR NAVIGATION. See the XTide disclaimer for details. In addition, tide and current are influenced by storms, river flow, and other factors beyond the ability of any predictive program.