Don’t shoot me, color question!

[needle]

Hi again,

i’m very much aware of the fact that i can’t squeeze color out of the arduino, although i’ve been experimenting with the vga shield which allows 16color 🙂

i was wondering, if there was another hardware solution to make the white text, change to a color.

so i would setup my arduino with the VEshield and add another IC thingy to the video output signal.

i tried searching google but i’m not sure what i’m looking for, so any body got any ideas?

[Michael]

Unfortunately, composite video is quite complex when it comes to color. You’d have to provide a sine wave of the right frequency, and also have a precisely timed “color burst” wave. I really don’t know how to do that in any simple way. Everyone wants color, though.

http://en.wikipedia.org/wiki/Composite_video

[BlueEyedVideot]

You need to check out Parallax’s Propeller Backpack, here:here

Will allow you to overlay colored text in several sizes w/several placement locations including boxes.

[needle]

seems like a nice product 🙂

any idea how to use this with an arduino?

couldn’t find a library…

i also never saw this before

[Michael]

The Propeller Backpack is not for use with Arduino. It is Propeller-based and is a standalone solution. Propeller chips have video ability built-in. The downside is that you have to program them in the goofy SPIN language instead of C/C++. I think this has prevented Propeller from really taking off in the hobbyist world like Arduino, even though Propeller is a more powerful MCU. Other thoughts?

[bellag]

Can anyone assist how in how i might offset the display up or down to enable characters to appear nearer the top or bottom of the display. I’m not trying to enlarge area W 136 H 96 just trying shift it vertically. Many thanks Tim?

[Michael]

This question belongs in a different topic because it’s not about color.
But you can modify the video timings by changing values in TVout/spec/video_properties.h

[Author]

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