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[on:]

Hey guys, I am new to the arduino environment and I am currently trying to do a simple computer vision project. I have recently bought the video experimenter shield from nootropicdesign and I am having trouble with the output. I was able to get my camera set up with the my arduino uno and the shield to display the video output on the tv screen. However, when I try running some basic examples the text/images from the code scroll continuously from right to left in a diagonal fashion. When this happens the initial camera video does not perform this behavior and seems fine. I configured the board such that the output select is switched to "overlay" and the sync select jumper is on "v input". Any comments will be much appreciated!

Code:

#include <TVout.h>
#include <fontALL.h>

TVout tv;

void setup()
{
   tv.begin(NTSC,128,96);
   tv.select_font(font4x6);
}

void loop()
{
   tv.draw_rect(50,50,20,20,1);
}

[Reply #1 on:]

Are you in an NTSC (RS170) region?

[Reply #2 on:]

Yes, I live in the United States.

[Reply #3 on:]

OK, I've only just got my video experimenter, but it is at home at the moment, I'm in a PAL/CCIR region and don't have any RS170 video sources.
NTSC/RS170 lines are a tiny bit shorter, but nothing major.
I haven't had any problems with mine though.
I'll give it some thought, later...

[Reply #4 on:]

What kind of TV are you using? Some LCD TVs can't cope with "marginal" NTSC signals (you see it occasionally with 80's home computers connected via RF or composite - some LCDs will be ok, others don't like it). Never Twice the Same Color is like that...