LibrePilot Forum
Development => Firmware General => Topic started by: lee on December 24, 2015, 12:55:59 pm
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According to the infomation of "make help", "osd" is board.
But "make fw_osd" build meassage shows that "fw_osd.opfw" comes from some "stm32f4" source files, it looks like the "fw_revolution.opfw" files. I know the osd mcu is ATMEGA328P, so I can not understand the build meassage, can you help me?
What is the "osd" board?
And how to use the "bl_osd.bin", "bu_osd.opfw", "fw_osd.opfw" please?
When I use the "LibrePilot1509 GCS", my osd display gps info correctly, but "LibrePilot1509 r154 GCS" failed, is the problem revelant to "fw_osd.opfw"?
Looking forward to your help, happy jingle bells!
Best Regards!
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This is the firmware used for this board:
(http://2.bp.blogspot.com/-aHRrdsH3UJk/VEwziJSWU6I/AAAAAAAACaQ/_dLNengoQ1I/s1600/IMG_20141025_181911.jpg)
But board/hardware files not released.
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OP never released the OSD board. This fw_osd is basically useless for most people. You probably have a MinimOSD board and should look up information in the LP wiki about setup for that.
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I get it. Thank you for your reply.
Is the OSD board used for decoding video signal by software?
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OSD board adds some information display to the video picture from an FPV camera so you can see the information while you are flying FPV. Like a fighter jet display. Things like current altitude, speed, compass heading, direction of home, battery voltage...
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"OSD" board is combined "Revolution" FC with "osd module", is my understanding right, please?
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No, the OSD board above do only OSD
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How amazing it is!
I look forward to its release version. Thanks for your reply!
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This board is not released and should never be released, its from OP times.
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Oh...Thank you and Merry Christmas!
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Can you show me the bottom layer of the OSD board, please?
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The schematic was published in the openpilot forums back in 2011 but l didn't realize it until I was doing research on archive.org after the forums went down and found the link to it. Unfortunately archive.org didn't archive the pdf of the schematic
and it was lost when the forums went down. Maybe someone still has a copy? I'd like to see it too. (I found it, see my next post)
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Do you have the other side of the picture above, pls?
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I was wrong a couple of posts back, I did save a copy.
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Thank you very much, it is a great project!
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It was a great project, now it's a dead project. Development was abandoned in early 2013. Now it's just interesting to look at.
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Why? I think the difficult point is the code for vedio signal decoding.
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I don't know why it was abandoned, it was before I even knew the project existed.
An OSD doesn't need to decode the video itself, it just needs the sync pulses. The EL1883 chip gives the cpu those pulses and it uses them to sync up overlaying what it wants on top of the video.
I'm told that the abandoned OP-OSD was used in creating the http://brainfpv.com/ flight controller and osd board. So it lives on in a way...
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Oh, I see. Thanks again for your reply.