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Topic: TVout: NTSC and PAL Composite Video Output. (Read 13913 times) previous topic - next topic

fiero79

windows xp, arduino ide 22, and never had any problems with other libraries... 

???

Charlie

nootropic

@fiero79, please ensure that your directory structure is this:

Code: [Select]

Arduino (your sketchbook directory)
    |
    +--libraries
          |
          +--TVout
          |
          +--TVoutfonts
          |
          +--pollserial


Restart Arduino after you install the TVout libraries in this manner.  If you still have a compilation problem, please post it exactly using copy/paste so we can see what is going on.

I built this plugged it in the tv and nothing happened. I cheked my circuit, centre pin through 1k to pin 9 ,centre pin through 470r to pin 7 ,. For some reason the pal woks better than NTSC though I live in canada where NTSC is used. see attached pics for result of tests. in pal i can barely see the text and it moves diagonally. can someone please help make it work?

fiero79

After updating to Arduino IDE 22 I think that someone needs to address the issue of where custom libraries go. I put the Files for TVout into the sketch folder    \My Documents\Arduino\libraries, and that didn't work.  I added it to the C:\Program Files\arduino\arduino-0022\libraries directory, and it works now. at least it compiles now, I will try it with the hardware later.

Charlie

Stefanoxjx

Hi, I would like to ask if is possible to mix output of Arduino TVout and composite signal of videocamera?
I would write a bit of information superimposed on the camera image.
See attachment for example.
Thanks.
Bye bye.
www.multiwii.it
www.sdmodel.it

nootropic

Quote
Hi, I would like to ask if is possible to mix output of Arduino TVout and composite signal of videocamera?
I would write a bit of information superimposed on the camera image.


Yes, the Video Experimenter shield allows you to do exactly that (and many other things).
http://nootropicdesign.com/ve/

This project shows text/graphics generated from TVout being overlayed on a composite signal:
http://nootropicdesign.com/projectlab/2011/03/20/text-and-graphics-overlay/

Stefanoxjx

Very good :)
Compliment for your job :)
But, do you know the cpu charge with tvout?
Arduino can work togheter tvout with other  processes for example calculation of GPS coordinate?
Thanks.
Bye.
www.multiwii.it
www.sdmodel.it

focalist

The CPU load is surprisingly workable:

http://arduino.cc/blog/2010/11/16/arduino-realtime-audio-spectrum-analyzer-with-video-out/
Using the TVout lib, I made a spectrum analyzer- which not only performs the TVout, but also manages to do the sampling and fourier transformations in realtime.

So, there's PLENTY for some GPS calcs...
When the testing is complete there will be... cake.

Stefanoxjx

Very very good:)
My project is beginning to have all the requirements to take off.
Thanks.
www.multiwii.it
www.sdmodel.it

nootropic

I agree, there's plenty of CPU time for most applications.  I have written complex video games with lots of geometric calculation, and all my games have needed to be artificially slowed down with delays so that the player can keep up.   XD

Stefanoxjx

Hi, I must only superimpose strings in another video source.
For my needs, Video experimenter is too big.
Is possible to have electrical scheme for build a small pcb?
I must using arduino mini for space exigence and weight.
Thanks.
www.multiwii.it
www.sdmodel.it

nootropic

Yes, you could design a small PCB that uses an SMD version of the LM1881.  Sounds like you are trying to build a drone, huh?

Stefanoxjx

My ideas is to build a telemetry system for multicopter used for fpv.
www.multiwii.it
www.sdmodel.it

gijs

here is a video mixer i made with a modified version of the tvout lib

http://gieskes.nl/visual-equipment/?file=gvm1
http://vimeo.com/24716896
http://vimeo.com/25588532
http://vimeo.com/25563707


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