OSD and Revo Nano / CC3D
« on: May 08, 2018, 02:50:30 am »
I have been trying to get the OSD working on either of these boards.  As I have (2) each of them siting here I was attempting to get this going for one of my fixed wing aircraft.  I was just looking to get the artificial horizon pitch, roll on screen.

I have these two at the moment.  I was getting video through both.  It was suggested I flash different firmware onto the mini to get it to work.  Well I think I bricked it and it does not pass video any more.  I am trying to get that sorted out.  Is there and minimosd out there that will work with out reflashing?

https://www.amazon.com/gp/product/B01N52ONB3/ref=oh_aui_detailpage_o05_s00?ie=UTF8&psc=1

https://www.amazon.com/gp/product/B0758BMBR3/ref=oh_aui_detailpage_o07_s00?ie=UTF8&psc=1

I have not tried to flash the micro, it shows video but no input from the CC3D or the Revo?  I checked and rechecked that I have the Rx to Tx and Tx to Rx.  I have gone down the list in the drop down window, but nothing shows up on the monitor or goggles.

Thanks Buzz.

Re: OSD and Revo Nano / CC3D
« Reply #1 on: May 08, 2018, 03:38:28 am »
Have you used either of these setup guides?
https://librepilot.atlassian.net/wiki/spaces/LPDOC/pages/91947115/MWOSD+Setup
https://librepilot.atlassian.net/wiki/spaces/LPDOC/pages/7274504/MinOPOSD+setup

MWOSD works for me with Revo.  There is a minor issue (something like odd/even frames) where OSD does not show in the DVR output of my goggles, but does show in the direct (low latency) output.

It may be that CC3D does not have enough memory to run MWOSD and so CC3D does better with MinOPOSD.  I forget the details.  @f5soh may be along and clarify about MWOSD and CC3D.

Re: OSD and Revo Nano / CC3D
« Reply #2 on: May 09, 2018, 03:28:21 am »
Yes, I was following the first link, was not able to get any OSD but had video.  I saw the thread open on RCU so I asked and was directed to flash new firmware onto the mini OSD.  When I followed those instructions, I have nothing, no video, no firm ware.  All I have is failed to talk to boot loader.  So I pulled the program to burn the boot loader, but it too fails.  So I have a dead board.

As for trying to use the Revo Nano as an interface.  I have yet to get either the CC3D or the Revo Nano to do any type of pass through.  I had screen shots, pictures on the old open pilot forum, all I was told, looks good, yet it would not do any type of pass through. 

I do have the FTDI and have been using it.

 Was wondering if there is a ready to go mini, micro sized OSD out there that would work with the Revo?

Thanks.

Buzz.

Re: OSD and Revo Nano / CC3D
« Reply #3 on: May 09, 2018, 03:58:33 am »
Generally speaking, for CC3D you should use MinOPOSD (OP/LP protocol) firmware.  For Revo, Nano, Sparky2, you can use MWOSD (MSP protocol) firmware.  In both cases, you should be using MinimOSD hardware.

If you are not using MinimOSD hardware, you can maybe still get it working (not with CC3D) if your OSD supports MSP protocol, but you are kind of on your own there.

So if your OSD is MinimOSD hardware, you should be able to use the wiki instructions to get it working.  You do need a 5 wire connection from FTDI to OSD (IIRC).  I'm not sure about possible bootloader issues.  I haven't researched what to do if you have damaged your bootloader.