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Here is how it looks: (This video is a bit outdated, sorry.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

Ahhhh, thank you!   

I'll look into it. 

There seems to be a bug with the Config Tool V Pre release r788 (the one that's available in the R800 download link at the top of the post).

The tool does not open an .osd file that has Channel 8 selected for RSSI.

I debugged this using a merge tool and as soon as I set the line: RSSI Enable Raw 0 to RSSI Enable Raw 8 The config tool can no longer access it. Workaround is to open the osd file in a text editor and change the value from 8 to 0 and save. Then, in the config tool, just change it again.


I am trying to add the efficiency widget but I cannot see it on the OSD screen. How can i know what is the problem?

For anyone looking for a firmware that utilizes the new micro board aux pins, (such as PWM RSSI!) then check out this branch.


Also looking for this option.

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?


Have you calibrated that channel?

Open MP so you also can read the current valuses.



Gábor!! It's so good to see you here. I hope all is well with you and your family. I miss the great discussions we used to have on this thread. You put in so much free personal time into this project, and I appreciate you every time I fly.
It doesn't look like anyone has risen to fill your spot after you left. The Github site is dead.


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 https://github.com/diydrones/MinimOSD-Extra/blob/master/MinimOsd-Ex...

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


Glad to hear Gabor.Every time I fly, I remember who created this software.And so for several years.Thanks.

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?

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