OSD units

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M0IKB
Posts: 5
Joined: Mon Jun 24, 2013 9:21 am

OSD units

Post by M0IKB » Wed Jul 03, 2013 11:23 am

Hello all,
I am starting a (small) build on an OSD (On Screen Display) unit to go between my camera and the transmitters.
Not 100% sure what I am going to do but thinking a PIC could do most of the work.
Now this is a simple question, anyone got any links or info about such units that wouldnt mind sharing?
I dont want to go out and buy a ready built unit, I enjoy the build so usual stuff, needs to be "cheap as chips" and almost bomb proof (read that as idiot proof hi).
regards
Gus M0IKB

M0DTS
Posts: 397
Joined: Sun Feb 24, 2008 9:03 pm

Re: OSD units

Post by M0DTS » Thu Jul 04, 2013 3:28 pm

For generating a testcard with some text there is the basic PICDREAM
http://translate.google.co.uk/translate ... 4_1377.htm

For OSD there's this i came across recently, cant find the original one i built:
http://garydion.com/projects/videoverlay/

If you want something more modern there's the MAX7456 IC designs, have one here but not played with it yet.

Rob

G7GTN
Posts: 11
Joined: Thu Jan 15, 2009 8:26 pm

Re: OSD units

Post by G7GTN » Thu Jul 04, 2013 6:54 pm

Hi Gus,

If you really need to travel the PIC route then is this one also: -

http://www.micro-examples.com/public/mi ... poser.html

Or PIC Dream as an OSD.

http://col2000.free.fr/f8egq/picosd/

As Rob M0DTS has already mentioned the MAX7456 will provide you with more pleasing results, might still be able to obtain some samples
from Maxim.

73's Mike.

PE5PVB
Posts: 22
Joined: Sun Sep 02, 2012 6:51 pm

Re: OSD units

Post by PE5PVB » Mon Sep 09, 2013 6:11 am

I designed one myself. It uses a MAX7456, which is currently still in production. With a rotary encoder you can easy choose the position on the screen, then push it to select the character...
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