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31  Using Arduino / Displays / Re: TFT becomes pixelated and goes white on: December 31, 2012, 11:02:32 am
First of all I would like to clarify a couple of things:
1. VCC should be connected directly to 5v. (Ref: ElecFreaks Wiki: Pant and Touch Code -> Connect the power pins : LCD-A to 3.3V , VCC to 5V , GND to GND)
2.
Quote
It is pretty funny that the library will tell you to put 5v to Vcc but the company puts in RED do not apply 5V.

The red text (I assume that you are refering to the red text on the ElecFreaks Wiki page) does not regard Vcc. The 3.3v signal level they are refering to is the voltage level of the I/O pins.

Then over to the originally posted issue:
I had the same problems when I added support for the ITead 4.3" and 5.0" displays to UTFT. I was originally using a shield that used resistors for level shifting. I could not figure out what was wrong.
Then I got the newer shields from ITead with the ICs instead of resistors. Then everything magically worked smiley It would seem to me that the SSD1963 is not as tolerant as most other TFT controllers with regards to the I/O voltage levels.
This may be the issue with the ElecFreaks 4.3" display as well, but as I do not have one I cannot verify this (which is also the reason it is not listed in the supported displays list).

/Henning
32  Using Arduino / Displays / Re: New UTFT Lib on: December 21, 2012, 09:16:25 pm
...the Calibration sketch works with the LCD in Landscape mode and the Touch in Portrait mode.

This is not entirely correct. The LCD always operates in Landscape mode in the calibration, but the touch screen operates in its own default orientation. For most display modules this will be Portrait, but not all modules are the same. This is described in the UTouch manual, and the correct orientation for all officially supported modules are also listed in the documentation.

/Henning
33  Using Arduino / Programming Questions / Re: Display images (jpg/png) on a 3.2" display from SD card on: December 15, 2012, 06:43:53 am
..or is it more complex than that?

I am afraid it is quite a bit more complex... Take a look at this: http://en.wikipedia.org/wiki/BMP_file_format

/Henning
34  Using Arduino / Programming Questions / Re: Display images (jpg/png) on a 3.2" display from SD card on: December 14, 2012, 08:44:48 pm
but, .bmp images only!

Not quite correct there smiley

loadBitmap() will only load raw, pre-processed files, but a conversion tool for Windows is included with UTFT, and there is also an online version on my website.

/Henning
35  Using Arduino / Displays / Re: ITDB02 + Shield 2.0 = Touch not working on: November 15, 2012, 07:44:18 pm
There is no decimal point in the SevenSegNumFont. Here is your problem! And you can't just add it like the space character was added. I'm (slowly) working on rewriting the font loading code of the UTFT library.. Hard task, for me anyway smiley

Why are you doing this??? UTFTs printNumF() already has everything you need. Use the SevenSegNumFontPlus font and add a blank character at the end. Change the ':' to a '.' if you want to. Then simply specify ':' as a divider and ';' as filler. There is no need whatsoever to rewrite the function for this.

Font can he downloaded here: http://www.henningkarlsen.com/electronics/r_fonts.php

/Henning
36  Using Arduino / Displays / Re: 7" LCD or similar on: November 04, 2012, 05:59:13 pm
Is there anything I could do in the UTFT library to support this screen?

Of course there are, but it is not a straight forward thing to do.
You would need the datasheet for the TFT panel on the module to find and calculate the correct timing for that particular panel.
In addition you would most likely need the SSD1963 datasheet to modify the settings for the display orientation and RAM update order.
If you get those thing correct it will most likely function correctly.

/Henning
37  Using Arduino / Displays / Re: 7" LCD or similar on: November 04, 2012, 08:24:26 am
First, thanks for your NO-help...

You are very welcome...

I read the doc (obviously) before my post, and the controller of my display (SSD1963) is in the list of supported controllers of the UTFT library... so please, the next time, read YOU the list before post this kind of replies...

If you read the documentataion like you say you would have found that the controller is supported but no 7" display modules are supported.
You are getting an image on the display so the controller part is obviously working, but the image is not what you expected because your particular display module is NOT supported.
Therefore the problem is not with the library.

I have put a lot of time and effort into my libraries and do not like it when people like you make unfounded accusations that there are problems with them. All the display modules on the supported-list work just fine. Because there are differences between modules I need to have one of the module in question to add support for it.

/Henning
38  Using Arduino / Displays / Re: 7" LCD or similar on: November 03, 2012, 06:47:26 am
(probably is a problem with the graphic libray: uTFT).

The "problem" is that you have not read the list of supported display modules supplied with UTFT!

/Henning
39  Using Arduino / Displays / Re: 7" LCD or similar on: October 30, 2012, 09:26:18 pm

You can use that screen with an Arduino Mega (probably even an Arduino 2009/Uno but it will most likely use ALL the available pins.)
The product information clearly states:
  • Built in controller
  • 8080/6800 MCU Interface (selectable)
But don't expect fast updates smiley

/Henning
40  Using Arduino / Displays / Re: Display ITDB02-3.2WD on: June 19, 2012, 07:45:32 am
3.2 LCD runs really slow on 8 bits, so most of 3.2 LCD don't use 8 bits.

What is the basis for this statement?

The size of the screen has nothing to do with the speed. The resolution of the screen has an impact. Since most 3.2" and 2.4" displays use 320x240 pixels they will be exactly the same speed provided they use the same bus width.
The difference between 8bit and 16bit communication is also minimal as the 8bit only require a few clock cycles extra per write.

Get a 2.4'' LCD with 8 bits, so you have enough pins for other functions like SD card and touch panel. and only use a 3.2 LCD with arduino MEGA.

This statment is mostly true, but it looks more like electrodragon are trying to push their own merchandise than trying to be helpful.
It is best to use 8bit modules on Arduino 2009/Uno, and move up to a Mega of you need a 16bit module. This is only needed because of the number of available IO pins, and NOT because of the speed.

/Henning

PS! The above statement is not fully accurate, as the speed also depends on the LCD panel refresh rate, controller speed, etc., but it is accurate enough for this context.
41  Using Arduino / Displays / Re: Display ITDB02-3.2WD on: June 15, 2012, 05:41:39 am
And Sir you were also wrong about the data bus width...

Please explain why you think I was wrong. All I said is that 8bit and 16bit refer to databus width. I did not say it couldn't be changed.

And which datasheet is that quote from?

/Henning
42  Using Arduino / Displays / Re: Display ITDB02-3.2WD on: June 15, 2012, 01:31:29 am
...8 bit (256 colors) only

This is not correct. 8bit and 16bit refer to the databus width and not color depth.

UTFT is set up to use 65k colors on all supported displays, but it could, in theory, support 256, 65k and 262k colors. Color depth is set up in the init section of the library.

/Henning
43  Using Arduino / Displays / Re: Font size options using UTFT library on: June 09, 2012, 04:42:25 am
Is there a way to make my own font or utilize a much larger font?

How about taking a quick look at my website?
There are some ready-made fonts up to 64x100 pixels here: http://www.henningkarlsen.com/electronics/r_fonts.php
You can make your own fonts here: http://www.henningkarlsen.com/electronics/t_make_font_file.php

/Henning
44  Using Arduino / Displays / Re: How to display images from SD card on a color screen? on: May 13, 2011, 06:11:20 pm
If you should go for the display and shield mentioned earlier in this thread you can display images easily with my libraries (also mentioned in the app-note mentioned).

Libraries:
ITDB02_Graph : http://www.henningkarlsen.com/electronics/a_l_itdb02_graph.php
ITDB02_tinyFAT : http://www.henningkarlsen.com/electronics/a_l_itdb02_tinyfat.php
tinyFAT : http://www.henningkarlsen.com/electronics/a_l_tinyfat.php

The ITDB02_tinyFAT library has demos showing how to load images from a SD card and displaying them on the screen.
A tool to convert images to the required format is included with the ITDB02_Graph library (Windows only), and a web-version of the tool is available at http://www.henningkarlsen.com/electronics/t_imageconverter565.php.

I am not sure if the Arduino is fast enough for the touch-and-drag function you want, though...

/Henning
45  International / Scandinavia / Re: Using GSM shield in Scandinavia on: March 27, 2011, 03:31:48 pm
Jeg fikk et Quad-band GPRS/GSM Shield for Arduino (http://www.cutedigi.com/product_info.php?cPath=284&products_id=4424&osCsid=8e05b384dd270e6108dd93f3631cb1c4) med en antenne av en bekjent i USA, og det fungerer utmerket i Norge.

Det virker helt greit med NewSoftSerial eller en hardware Serial på en Mega. Det eneste du må passe på er at det kommer satt opp med 115200baud som standard hastighet, og den hastigheten støttes ikke av NewSoftSerial. Jeg kan forklare nærmere hva som må gjøres hvis det er behov.

/Henning
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