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1  Development / Other Software Development / bug: EEPROM.write function on: March 16, 2011, 10:05:57 am
hi. This also was discussed in old forum here: http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?num=1258047495

You should really change the EEPROM.write example as it is wrong and are somehow confusing.
In the beginning you say that epprom value can be 0 - 255,  then in the example when i reaches 256 you write that value into eeprom.
"
 for (int i = 0; i < 512; i++)
   EEPROM.write(i, i);
"
2  Using Arduino / Displays / Re: TVout: NTSC and PAL Composite Video Output. on: February 10, 2011, 02:18:05 am
@schumixmd
I haven't done anything with OSD capabilities but TVout has been modified to do this previously (search the old thread linked to in the first post).  An OSD has also been done with nothing more than a few resistors see (not TVout based but this is where I had planned on starting if I was to create a TVout OSD version): http://www.elenafrancesco.org/arduino/baroneosd/ which will do some basic text overlay.

As far as the pollserial issues that is odd but not all that surprising as I did'nt do much testing beyond the super basic terminal app meant as a quick example on using the hbi_hook.  If I remember correctly pollserial goes a bit crazy if the rx buffer gets full maybe start there? (make sure to handle the data fast enough maybe)

Thank for your answer mdmetzle.
The fact is that I have checked BaroneOSD and also have read the full archived thread of TVout.
BardoneOSD has a simplistic Hardware Design but a not easy to understand software. I do know Delphi and C but have no knowledge in microprocessor programming. And also BaroneOSD is very sensitive to the Device that inputs and outputs the video signal. I tried it with 2 different TV and I had problems.. But... the TVout library did exactly the job I needed.

And that's why I need help. I will try to search again, but please .. if anyone has some suggestions then please share them..

3  Using Arduino / Displays / Re: TVout: NTSC and PAL Composite Video Output. on: February 07, 2011, 09:17:14 am
Hi all.

For the beginning I want to thank you to mdmetzle for this great work and of course to all contributors to improvement of this library. And just after that I want to switch to my problem.. maybe someone can help.

I also started to use this library and of course coming from R/C world, I started to develop my own OSD as many others. Why I did start? Not because I don't like others on the market or because they are not good, but as always because of low cost.
I already have an Arduino Duemilanove Board - and succeeded with drawing of the OSD on the screen(like HUD). Nothing complicated because of is TVout library.

As second step, i did wrote the part of code where I am reading the data from GPS NMEA sentences. But of course, because this library is interrupt driven the serial doesn't work even if using pollserial().  This 2 parts works well apart from each other but not together. Together I have problems .. screen flickering and/or missing GPS info (incomplete NMEA sentence).

Also, thinking that the purpose of OSD is to overlay the text over image some modification need to be done to accomplish this, and maybe using sync generator will also help improving the timing?

So, the big question here: Will anyone help me interfacing my arduino board with LM1881?! Maybe someone already did it and can share useful info about that.
As I know, LM1881 should be connected to INT0 and INT1 of ATMEGA.. but the rest.. I don't know smiley-sad

so.. here I will stop "crying" .. and will return later with any other info that I will learn.
4  Forum 2005-2010 (read only) / Interfacing / Re: Arduino Duemilanove and GLCD EPSON SCI7500 on: January 02, 2011, 01:27:18 pm
no one can help me with wiring this glcd?
5  Forum 2005-2010 (read only) / Interfacing / Re: Arduino Duemilanove with Graphic monohrome display on: December 31, 2010, 04:31:21 am
just found the datasheet for the driver..
http://ftp://ftp.epson.it/pub/electronics-de/assp/mls/sci7500.pdf
6  Forum 2005-2010 (read only) / Interfacing / Arduino Duemilanove and GLCD EPSON SCI7500 on: December 31, 2010, 04:21:04 am
Hello guys,

i've received my arduino duemilanove and of course I want to start to develop my projects I have in mind, but first of all i should learn how to use it smiley
So, I want to interface it with and graphical monochrome lcd that i got from an pocketpc from symbol handheld terminal.
I dont even know if it is serial or spi, but i can only gues it is not serial smiley
It has an 20pin flex cable connection and the microchip is EPSON SCI7500F0A

can someone help me with wiring? and some suggestions on programming?
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