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Here is how it looks: (This video is a bit outdated, sorry.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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  • Hi Gabor

    ok I downloaded 1.28.1 and installed it and the charset. Did also a configuration for my needs.

    Everything works fine. I am on PAL so I used the PAL Version.

    I will hopefully do some testflights soon. I am not sure though if I can make a video because I will fly with my goggles and I dont have the equipment to record a video...

    greetings knut

  • Hi Gabor,

    I've been comparing the chipsets between the MinimOSD for APM and the Rushduino OSD for MultiWii and I'm starting to wonder if the code for Rushduino would run ok on the MinimOSD. It does not look like there would be enough of a hardware difference to cause an issue. The only reason I ask is that the MinimOSD is cheaper and more compact and I alternate between APM and MultiWii controllers. If you don't think it would work are there any plans for some code to read the MultiWii protocol as well?


  • Hi all

    I would like to jump in with some flight testing, if this is of any sense to you. If yes, please give me an advice, which version I should use.

    I use an APM1 with ArduPlane and my next flight will be udring the weekend, if the weather ...:)


  • Good Job Gabor, Thank's.

    I have two problems, the five number I see  only a grey rectangle; and I can't see the home direction arrow. Any idea?

  • Hi Gabor,


    Thank you for your contribution. I downloaded yout firmware 1.28. The units are imperial. How can I change them to metric?





  • Developer

    I added code to failsafe to turn on OSD if failsafe is engaged. from my ArduCopter H-2.0.49_OSD in events.pde

    static void failsafe_on_event()
    // This is how to handle a failsafe.
    case AUTO:
    if (g.throttle_fs_action == 1) {
    // 2 = Stay in AUTO and ignore failsafe

    // not ready to enable yet w/o more testing
    set_osd_mode(1); // Forced turn ON of OSD Overlay if RC radio link is lost //mjc

    Sorry, I lost indents with paste

    Can we sent custom mavlink commands to OSD now?  Overlay on/off, Strings of custom text,  Various status or alarm text?

  • One suggestion;

    While disabling the OSD may be useful, and I would rather do it by another channel, I understand that not all have a spare channel.  

    Also - having 6 modes makes me sometime "hunt" for proper mode - and that disables OSD.

    Disabling it by accident, during instrumental flight, may be dangerous.  

    I would suggest to keep the "disable OSD command" it as-is today. 

    but *enable* it on any mode change from disabled state. (not wait for "doubleclick" change) 

    - option to control it by another channel would be the best solution.

  • It's most likely something I missed, but I really don't understand why "Home altitude" (HA) changes during the flight. (what it represents).

    Is there a reason for Altitude to be labeled as "TA" ?  instead of "ALT" ?

  • Anyone got the "wind direction" indication to work ?

    It changes only a few times during a flight, otherwise speed and direction is "stuck".

  • hi gabor...congratulation for your work...i install the hex firmware and update the charset  and the osd work but the letters of osd appear in ramdom forms and disturbed....i reinstall the official firmware and work system camera is ntsc...its this the cause of the problem??? please help me

    sorry for my english

    thank you very match

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