Adding extra functions to MinimOSD

I have started to add functions to MinimOsd code.

At first i did it for myself only. Added many functions i thought i need. Then opened this thread.

after a while, Pedro and later Miguel came, and things started to happen fast. :D

They have optimised the code and added even more things to it.

They have worked hard on CT, and it became a great tool!

Thank you Bough! :)

By now MinimOSD-Extra got a pretty advanced OSD.

Here it is in action:


- Changeable unit measurement (US, metric)

- Airspeed

- Home alt

- Battery Percent

- Battery used mah

- Current Draw

- Time From Startup (cleared at takeoff to show exact flight time)

- OSD Menu

- Variometer

- Wind horizontal speed and direction, and also the average wind speed of the last few minutes. 

- OSD on/off

- Switchable secound screen

- WP distance

- WP heading

- Crosstrack error

- Warning messages for Lost GPS fix, Stall, Overspeed, battery volt, battery Percent, RSSI

- Efficiency, glide distance & thermic notifier. 3 in one panel

- OSD Brightness

- HAM Call Sign

- After flight summary

- Trip distance

- Temperature

- Smoothened horizon

- Real heading


- Vertical speed

This functions can be turned on and off, and placed on different screens now, by the Config. tool.

Also RSSI, switching mode and channel and unit measurement, Stall speed warning, Overspeed warning, Battery warning volt, Battery percent warning, RSSI warning,  can be set in new Config Tool.

We built in a new way of setting video standards. Now OSD does not guessing anymore :). You can set it fixed from CT. It is in "Video Mode" menu.

Here is how it looks: (This video is a bit outdated, sorry. I will make a new one soon.)

The MinimOSD-Extra project is here: Link

This project is the developing version of the official Arducam OSD located here: Link

The latest stable version is: 2.2

The latest version can be downloaded from here: MinimOSD-Extra R800

Username: MinimOSD_Extra

Password: Top_Secret

CT is included. (The FW for Plane, Copter, Character upload and the character file is in the "FW & Char" directory inside CT directory)

We are sharing it to see videos you make using it! :)


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    • Frsky telemetry is simple. It has analog ports, so you can make voltage alarms, that OSD can generate.

      However you will need leadouts to do it and some code to remove, to have space. Or You can make a separated board that reads mavlink and generates thies alarms for Frsky. It is like a day work.

  • Hello again!

    I have now implemented the second battery monitor and have successfully compiled the code. But I will have to wait for the clever guys to make the ArduPlane sketch smaller before I can upload and test it. Here is the thread:

  • Hi Miguel.

    I performed a google search for ArduTracker fw and the only one I found is deprecated. Do you know where I can find a good one? It's also to install on a Arduino Uno for an antenna tracker. Any advise will be much appreciated.


    Frederico Fernandes.

  • Hi to all...short question for developers, the code and library in googlecode is update to latest version?
    • Hi Luis,

      No it isn't :S

      I've just commited a new folder called librariesOK.

      Those are the libs we're actually using.


      • Thank you.


      • Hi Miguel

        could you please tell me where the libraries are locateted ? I am particularly interested in the code for intercepting the Mavlink messages for vertical speed. My plan is to take the Mavlink VS data with a pro mini or micro and convert it to an analog signal which will be fed to the video TX audio input.

        By the way - I noticed that heading information is represented with 1 to 3 digits. In aviation normally  three digits are used on PFDs or MFDs.  A heading of 5 degrees would be shown as 005, a heading of  15 degrees as 015 and so on. It's just a matter of consistency for representing heading values.

        regards Andy

        • That is a FANTASTIC idea.  Just like the gliders have!!

        • Hi Andy,

          The libraries are located here

          I think that that variometer feature shouldn't be hard to achieve with a mini.

          Thanks for pointing the 3 digit standard. It's a none code space cost.

          Also it gave me an idea to save more code space, thanks :)

          The only drawback regarding the leading zeros is the fact that the OSD will became more clutered.

          Let's see what other guys think about it.


          • As a pilot, I say its a good thing.  When things change shape on the screen they can be hard to detect even though the position is the same.  I am PRO 3 digit!!

            Thanks for all your great work!!

This reply was deleted.


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