Video overlay shield for the Arduino

Posted on Thursday, May 6th, 2010 in Arduino by Ian

VideoOverlayShield is an Arduino shield that superimposes text onto a composite video feed. The board uses a MAX7456 on-screen display IC which is configured through an SPI interface. The MAX7456 stores 256 user-definable characters, so we’d guess it could also display icons and graphics with a bit of hacking.

Thanks for the tip Eric!

This entry was posted on Thursday, May 6th, 2010 at 8:28 am and is filed under Arduino. You can follow any responses to this entry through the RSS 2.0 feed. You can skip to the end and leave a response. Pinging is currently not allowed.

6 Responses to “Video overlay shield for the Arduino”

  1. Red says:

    Now I see the way they make all those OSDs for RC helicopters ;-)
    Any interfaces for connecting/reading sensors?

  2. Anon says:

    Neat stuff, looks like if you want to add your own characters though, you need to start deleting characters from the pre-programmed character map. Shouldn’t be an issue for english peeps since most of the map is filled up with non-english characters.

    It looks like there are forced gaps between characters though, which makes it harder to make extra-big characters out of smaller characters. Still each character is 11 by 17 which is nice.

    • Sjaak says:

      By looking at the charset the characters (note chars 0xf5/0xf6) are at least adjecent don’t have a gap between them. Dunno if there still gaps vertical, but if there aren’t any a simple larger graphics is possible.

      • Anon says:

        Oh, hey, look at that, my bad

        I was going by the fact that the certain letters filled their pixel data from side to side and yet when they were displayed they showed a gap, but upon closer inspection it just seems that there is a gap because of the characters black border.

        I was wrong about character size too, it does 16×30 characters, and each character is 12×18

  3. matyk73 says:

    Is there a working library for this shield? If so does it support PAL?

  4. Mark33sv says:

    Hi, this support PAL/NTSC and sing CCTV Cameras?
    What about library ?
    I need to make a portable CCTV monitor whit ARDUINO

Leave a Reply

Notify me of followup comments via e-mail. You can also subscribe without commenting.

Recent Comments

  • Nathan Johnson: 100 channels. Not many are legal in any given area. Be sure to comply with local laws.
  • William Brodie-Tyrrell: It's getting to the point where it's cheaper and definitely easier to use a Pi Zero or similar and a $20 3G USB dongle. Power...
  • KH: IIRC most of the actual operating system of modern HDDs is in one of the platter(s); the stuff on the 25VF010 is a bootup firmware......
  • Trev: I don't know of any inexpensive 3G modules (prices start around $US 50), but it does explain why 2G modules are relatively inexpensive by comparison....
  • Zonie: This site Rocks!