Replies to This Discussion

Permalink Reply by Gábor Zoltán on July 9, 2012 at 2:14pm

Hi James,

I am interested! :)

Could you share the code you inserted?

I have also made a few changes by the help of the community, like airspeed, home alt, etc. 

I was planning to add flight time also, but as you have already made it, it would be nice to use it. :)

We can put together a version that does it all, if that is ok with you. ;)

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Permalink Reply by James masterman on July 12, 2012 at 3:33am

Hi Gabor,

Nice work!

The code for the timer is very simple. In OSD_Panels.pde, in the function writePanels, I have an elapsed time counter that is triggered when airspeed rises above 3m/s. 

- this is from inside writePanels

if(startTime > 0)
{
  elapsedTime = (millis() - startTime)/1000;
}

else
{
  if(osd_groundspeed > 3)
  {
    startTime = millis();
  }
}

Printing the time elapsed is a simple matter of using the elapsed time variable

void panTimer(int first_col, int first_line)
{
  if(elapsedTime > 0)
  {
  osd.setPanel(first_col, first_line);
  osd.openPanel();

  osd.printf("%c%2i%c%02i", 0xFB,(elapsedTime/60)%60,0x3A,elapsedTime%60);

  osd.closePanel();

}
}

You will need to add an elapsedTime and startTime variable to the OSD_Vars.h file (it's a long)

You will also need a slot to put the timer in the panel arrays for locating each panel. I overwrote a current panel as I wasn't using it. I'm not sure how many new panels it can handle, but you will need to modify the config tool as well to suit whatever changes you made.

I have attached a zip of the code files, as well. Other changes in this code include

• a function to show the next waypoint number when flying in auto mode,
• a time left function that calculates the time left to empty battery from a linear regression (this is a waste of time, I am going to remove it),
• alt is relative to the home location
• velocity converted to km/hr

Regards

James

Attachments:

• Archive.zip, 22 KB

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Permalink Reply by Gábor Zoltán on July 12, 2012 at 5:16am

Thank you James,

How did you make config tool?

I added my functions to existing panels, so i can use the old config tool, but i like your workaround much better. :)

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Permalink Reply by Gábor Zoltán on July 12, 2012 at 1:44pm

Did you use visual studio?

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Permalink Reply by James masterman on July 12, 2012 at 9:58pm

The config tool is a c# application. I just used visual studio express 2010 to compile it. I am also using the arduino plugin for visual studio for the osd and other stuff, its far better than the arduino ide.

I think the ultimate osd config tool would be more flexible and allow you to select any mavlink message and build an overlay from it, rather than just copying what other osd config tools do and give you a set of predefined choices. If I ever get some spare time, thats what i will build.

Cheers

James

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Permalink Reply by Gábor Zoltán on July 18, 2012 at 2:28pm

Thank you James,

Now my OSD is getting better, and better. ;)

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