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Fatshark and Pixhawk with MinimOSD

Posted by Attila on April 26, 2014 at 2:55pm

I am trying to install hexTronik MinimOSD between Fatshark and Pixhawk. I know i am getting signal if there is no OSD connected inbetween. If I follow the instructions on the first picture (found on this page: http://copter.ardupilot.com/wiki/common-minim-osd-specific-hardware-setup/ ) the OSD board gets very hot .

If i am trying to power the OSD board with 5V from the APM (see connection schematics on the second picture) i dont get any picture. Are my connections right? Am I supposed to load some firmware on the OSD?

FatShark_MinimOSD.jpg

My_FatShark_MinimOSD.jpg

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Tags: fpv, fatshark, minimosd, osd, pixhawk
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Replies

  • Attila May 10, 2014 at 12:31pm
    I just bought another MinimOSD v1.1 from 3 drobotics. I am powering this one from two batteries. The OSD side with the APM (5V) the Video IN side with 12V secondary battery. This setup doesnt work either. No picture. The firmware should come preloaded on these boards, am i right ?
    Tried to update the firmware through a TTL converter but i am getting the error message that "cant connect to bootloader". I am thinking of abandoning the OSD idea.
    Can anyone help me?
    • Attila > Attila May 11, 2014 at 8:07pm

      3702490857?profile=originalThis is the connection diagram i am testing the OSD with. Trying to display the image on an LCD instead of the Headset to eliminate extra bug possibilities.

      • mP1 > Attila May 11, 2014 at 8:13pm

        Why dont you try and keep things simple and remove the LCD from the setup and simply have the camera feeding the minimOsd and then have that outputting to the video transmitter. I wonder if the trying to push too many amps thru the little board.

  • Attila April 27, 2014 at 11:54am

    On another note, is it possible to send the video into Mission Planner to overlay the video with the HUD?

  • Scott Reid April 27, 2014 at 6:40am
    You also need to supply 12v on the video side of the minimosd. For what it's worth, I just use battery voltage here with no regulator
    • Attila > Scott Reid April 27, 2014 at 11:49am

      Could you elaborate on the "You also need to supply 12v on the video side of the minimosd"?How is your connection schematics?

      Mine gets super hot , its on the border of frying the board if I connect it based on the first option in the following link:  http://copter.ardupilot.com/wiki/common-minim-osd-quick-installatio...

      Maybe it would fry the board if i leave it for long, don't want to risk it.

      I am trying to hook it up based on the second option on the link above. The Fatshark transmitter is getting the 12V from the battery trough the voltage regulator. The camera is getting the 5V from the Fatshark Transmitter.

      The board seems to get power from the APM side, the three LEDs are on and i can measure 5V on the OSD video side. I tried it with my Gopro too, where i dont need to power the camera. The image comes in clear to the glasses unless i connect the OSD. Tried to enable it in Mission Planner too pressing the green button but nothing happened.

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