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Here is how it looks: (This video is a bit outdated, sorry.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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  • Is this artifact on the screen a bug in the code? I initially thought it's just something on my minimosd but it can be observed on several videos/pictures on the internet displaying minimosd data. It either a dash or a dot but its always in the right lower quarter of the image. It's one of the virtual horizon characters.


    Or is it a poor attempt of some kind of altitude gauge?

    Also I sometimes get a duplicate of the pitch gauge. Marked with green arrow in the picture above.

    • I'm having the same issue with the extra pitch attitude character in the exact same spot, always showing zero. I only have one MinimOSD that does this. It's one of those micro minimosd's. I have tried wiping everything off the screen and adding it back, but it persists. Very strange. @Janne, did you ever find a solution?
    • The dot must be from the vertical speed indicator i think (you can delete it in the charset). According to the pitch, check on MinimOSD CT if you have overlapped layers, move them around to make sure you don't have two information gauges over each-other.

  • Hello Marc!

    You can create version firmware for minimosd for copter?

    • It's not just creating firmware, you have to port the code and test it.

      I don't fly multirotors mostly for safety reasons, so I have no way to test it and I'd rather not touch code I can't test.

      I'm happy to take a pull request from someone who can port the code (trivial) and test it.

      I should add my code is likely also not as useful to multirotors because you are less likely to run out of channels since you only need 4 to fly. My motor glider uses 7 channels just to fly the plane itself, plus other channels to talk to ardupilot, the OSD, and so forth.

  • I hope I'm not being That Guy, but is there an up-to-date readme that explains what is what in the repo and how to build minimosd extra?

    Also, is there a way to make it show things, especially vertical speed, in SI units? (m/s)

    Thank you. I've been a bit out of it for a few months. 

    • Maybe if you had looked at my tree :)

      As for vertical speed, full scale pilots (I'm one) use xxx per minute, not per second. You can add that for yourself if you wish, but meters per second is not a standard unit for flying.

      MinimOSD-Extra. Contribute to marcmerlin/MinimOSD-Extra development by creating an account on GitHub.
      • Ahhhh, thank you!   

        I'll look into it. 

      • As a lot of people are not totally happy using Arduino maybe it would be a good idea to compile it into a hex file and add it here so others could download and use it?


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