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Here is how it looks: (This video is a bit outdated, sorry.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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  • Glad to hear Gabor.Every time I fly, I remember who created this software.And so for several years.Thanks.

    • Hehe! :)

      Hello Wattas, 

      I am glad!

      I have also enjoyed watching all the videos here!

      I still go back to some and watch them again!

      I wish you many nice landings!



      • Hi Gabor hope you are well and enjoying your new baby hobby good luck to you all.  Am now running two Minim OSD with Extra installed and working great thanks to you!!  BIll

  • Hi, I have recently updated my MinimOSD (3DR version 1.1) to the latest OSDExtra firmware from github, and started to install it on my Pixhawk (AC3.3.3).

    I have the solder jumpers on the board bridged so I can power my camera/video tx seperately.

    At first I wasnt getting any data through at all, nor was I able to switch screens (3 pos switch), then I changed some settings in MP in the full tree:





    SR2_PARAMS=0 (Didn't Change)


    SR2_RAW_CTRL=2 (Didn't Change)




    And confirmed that:



    Now I can see some data updating on the screen, but can not switch the screen.

    On boot, and with the switch in POS1, the OSD starts off blank, then as I toggle through the switch positions, every position stays as screen 1. It doesn't look like it's changing or switching after that, my 2 OSD screens are very different so I can tell if they were changing.

    So I confirm that my Channel 7 3-way switch is working correctly by checking in MP:




    Still no luck.

    Does anybody have any further info for me to get the screen switching to work?

    • Hello,

      Have you calibrated that channel?

      Open MP so you also can read the current valuses.



      • I tried changing to switching to ch8, still no change.

        Is there anybody that has panel switching working on AC3.3.3?

      • Gabor,

        Yes. At first I had channel 7 as:


        which matches what the wiki says

        screen 1: 0 to 1233 screen 2: 1233 to 1467 screen off: 1467 to 1701 (or abowe. the abowe range can be used for additional things)

        But then going in to

        I found this:

        if channel < 1200, then panel 0
        if channel >= 1200 & <= 1800, then panel 1
        if channel > 1800, then panel off

        (One of them needs to be revised)

        So I have now changed the channel 7 to be 984, 1501 , 2016, but still not able to change panels.

        I've attached my OSD parameter file

        OSD Parameter file.osd

        MinimOSD-Extra. Contribute to diydrones/MinimOSD-Extra development by creating an account on GitHub.
        • Hi,

          Are you sure the channel data is configured? So it is present on the port for the OSD?

          Also the code itself can be changed easy to have the channel value displayed for debuging!

          Best regards,


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