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Here is how it looks: (This video is a bit outdated, sorry.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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Please go back and load stable version of FW. Then upload latest character set. Then upgrade to latest FW. This has been discussed in this thread during the last two months.

So at what point do I use the Character_Updater_FW.hex that is included in the latest archive to update the Character Set? I now have my board back working with the stable 2.2 version.

I'm trying remember but I think u need to use 2.2 ct

Ok so here is what I tried now an still no success. Did some more reading and found out that this character update can be a but iffy with the plane firmware.  So with stable 2.2 CT I put in the copter firmware, then I powered the other side of the minim with 12v and the LED on that side was lit,  I used the Update Charset button under the options menu and blew in the latest character set and again it said it had completed correctly.  Then blew in the 2.2 plane firmware and checked the display and all was 100%.  Went to R800 latest CT and blew in the latest firmware and configured it and still gobble dee gook on the screen same as always mostly on the compass rose and horizon.  Am now back at stable 2.2 and all OK again.  This is getting crazy now as I suspect Robert had tried this too.  All I want is to have CRUZ and AUTO displayed in the mode area and for it to show me mah used instead of %.  Anyone else any idea's if I am doing anything wrong?  Is the latest firmware hardware dependant? The board I have is not an original board from 3dr but looks identical to the v1 board.  HELP LOL


I did the same thing you did but gave up in frustration and ripped out all the MinimOSD modules from 3 of my drones. Until this hardware/firmware is fixed, I won't spend another dime on it. I feel there isn't enough backing by DEVs to really get this device to be reliable. Heck the code section of wiki is out of date. Good luck getting anywhere with it.


Please download the latest fw package by scrolling up here, and clicking on the link.

Start the CT included.
(It is important to use the right CT!)

Upload character uploader fw.

Power both side of the osd.

Digital is needed for connection, but the sync chip is also needed to store the cars. Update runs even if the video side is not powered, but will newer take the new chars.

When finished, upload plane fw.

That is it.


I wrote a new firmware (almost) from scratch and its what I currently use for flying (but right now you'll need some knowledge about programming avr's since its not arduino based).

Talk here: http://www.rcgroups.com/forums/showthread.php?t=2324312

Code here: https://github.com/minimosd-ng/minimosd-ng

But... due to the poor hardware capabilities of the minimOSD, I've "paused" the firmware development and I'm currently developing a new OSD board to be used with APM that should support nice graphic widgets.



Hi, thanks for all your work. I have a semi working OSD and am waiting to getmy programmer back off a friend to test futher. But i do what you say.

Use latest CT

Power osd on both sides

upload charcter uploader firmware

upload characterset

upload copter (from the lastest link)

And I dont think i have ever had a character set take on two different minim osd

Like i say i edit character sets that work and yet when i "upload" the new character set there is no change what so ever so i canonly assume the last firmware was left.

Not sure how to debug this problem

However all in all the osd is very very good!

I look forward to seeing your board.  Any idea when you should have something worth putting out there?


PS. If you want my boards (I think I have 6 of them), just send me a message with mailing details and I'll send them your way. Not sure if they are any good, but you are welcome to play with them.

Hello Gabor

OK tried this have already downloaded and unpacked R800.

Started R800 CT

Uploaded character uploader firmware

After that Powered both sides of the board (LED each side lit)

Then ran in new characterset using button under option

Uploaded plane firmware

Screen still not correct with latest firmware

Question for you do I need to power both sides of the board before I upload the character uploader firmware?

Does this indeed load the characters with no need to run the character upload sequence after that?

As you made no mention of that in your reply



No for FW upload it is not needed.

Are you using a 6 pin FTDI?


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