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Here is how it looks: (This video is a bit outdated, sorry.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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                • Ok so i seem to have it working. However even though the software boots up and runs i cannot update any character sets. The config too will say uploaded and says what firmware has been uploaded but then when i click read from osd it comes up with unknown/custom firmware. I know its not uploading because i created my own with entirely transparent characters tested it on the display preview and when i uploaded it the characters were exactly the same as before...

                  Getting confused now.

                  • So before i try this tomorrow...

                    1. Upload Character_Updater_FW
                    2. Upload MinimOSD_2.4.0.2.mcm3. Upload MinimOsd_Extra_Copter_R800.hex

                    And then all should be well. And i should be able to upload any character set i want?


                  • There is a firmware in the R800 package that is purpose built for firmware loading as well.  Load that, then the firmware, then put the vehicle-specific firmware back on.

                  • The Charset upload code was removed from the firmware to make space. Load an old firmware, update the charset, then put r800 back on again.
            • Robert,

              Do you have power on both sides of your OSD when you upload the character file?

              Also, as I have mentioned before, I have tried EEPROM Clear to erase the OSD as best as I can, but it keeps on giving me garbage characters.

              I have found burning the bootloader by using a USBASP programmer sort out the firmware and character problem.

              • I do have power on both sides yes :)

                Later on today ill solder on some headers and give that a go. or can i use this? Do you have a link to the bootloader i need to burn?



                Atmel Programming Socket - Google Search
                • Rob,

                  The following youtube video explains how you do it:


                  At 16:10 the guy shows you how to burn the bootloader.

                  • Rob,

                    I am not an electronics expert, but I bought this USBASP from a local Jaycar store in Australia:

                    Any USBASP should work but you need this programmer to burn the bootloader. From what I read from your link to that Atmel tool it should work but you still need to connect it to a USBASP device.

                    Watch the youtube video from the start, you will see the guy upload the EEPROM Clear hex file with Arduino software via a FTDI programmer and then he switch to the USBASP and in Arduino he then click on Burn Bootloader. After that you upload the latest minimOSD firmware and Character file.

                    Really easy if you have those two programmers.

    • what you describe is the correct way to connect everything. I have problems every once in a while one out of 10 times the OSD will not boot. it will not show any Mavlink data but it sounds like yours is a lot more unpredictable than that
    • Do you have Tx connected to OSD? Don't. Enable Telem in MP
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