From this listing I have the following information:
Specification:
240374PQ
65K color
320*240
3.2 inch
Wide viewing angle
SSD1289:240 RGB x 320 TFT Driver
Integrated Power, Gate and Source Driver With RAM
ADS7843:4-WIRE TOUCH, UP TO 125kHz CONVERSION RATE, SERIAL INTERFACE
Though I am not sure how much of that will be of use.
I really hope someone can help me getting this to work.
For now I would be happy if I can get get the screen to output information and print out text. I am not overly bothered about the Touch capability or the SD card reader right now.
I received the display yesterday but still waiting for cables. Based on what I found so far I think you try to connect TFT -> Mega
LEDA -> 5V
VCC -> 5V
RD -> 3.3V
GND -> GND
DB0..DB7 -> pin D37->D30
DB8..DB15 -> pin D22->D29
RS -> D38
WR -> D39
CS(pin6) -> D40
RSET -> D41
I will try to upload a video showing my progress. I am also currently compiling a document that will contain the pinouts, diagrams and basic setup to use this screen with a generic setup rather than the demo's.
I apologise for the double post but here is a video as promised.
For some reason the screen has developed a screen flickering.. Does anyone else have this problem with the LCD? Or does anyone know how to solve the problem?
Below is the youtube link to the video.
The touch screen is not yet working and neither is the SD slot. For now I am happy to get all the kinks out of the LCD display.
I was just tinkering with my new sainsmart 3.2, and I got it work fairly well these librarys. Mind you I'm using the lcd shield from sainsmart too, cause I didnt want to do all the ridiculous wiring Electronics - Henning Karlsen for touch Electronics - Henning Karlsen for display
dosftw:
I apologise for the double post but here is a video as promised.
For some reason the screen has developed a screen flickering.. Does anyone else have this problem with the LCD? Or does anyone know how to solve the problem?
The touch screen is not yet working and neither is the SD slot. For now I am happy to get all the kinks out of the LCD display.
Kindest regards,
Nathan
At least that doesn't look like a dodgy display, check your connections and make sure the RD pin is pulled high, as floating values will cause stuff similar to that.
PS. Having just read another topic on the same TFT screen, I think the most appropriate work for describing what is happening on screen is it becomes extremely 'noisy'.
If the RD pin is connected to 3.3v, then it is fine. The odd occasion I have had noise on my screen, was due to a loose wire.
When the screen is running and goes noisy, gently press the wires in ( if not soldered ) and see if the noise goes away or changes with your touch.
Hmm that is strange as my RD pin is connected to 3.3v..
I have ordered some more Male to Female jumper leads with the square housing.. So hopefully if there ARE any loose connections due to the circular jump leads then they will be fixed by the new square ones.
I will keep you all updated and hopefully once I get the new Male to Female leads i will be able to use the touch screen and SD slot too.
The LED-A is supposed to get 5v. It is only used for the backlight.
The problem is all of the signal pins. They are rated for a maximum input of Vddio which in the case of the SSD1289 is maximum 3.6v (typically 3.3v).
You don't have to use a shield, but there is a possibility of killing your screen if you don't lower the signal voltage. This can normally be done by running a 10k ohm resistor in series with each signal (applies to the display, touch screen and the SD card).
It is possible to use 74HC595s to reduce the pin count, but you will have to rewrite the I/O part of the library, and the data transfer rate will be much slower.
Hey everyone, I just thought I would make good on my promise to post a video of my screen working.
Here I have the SD demo uploaded into my Arduino showing a selection of .RAW images.
Unfortunately.. for some reason the screen is very blue :S is has been like that since I got it working.
I have also replaced the jumpers with nice and neatly arranged and tidy Male to Female cables that came in the post today If you live in the UK and you buy a lot of stuff on eBay then 4tronix_uk are a fantastic eSeller. Extremely helpful, courteous and efficient. I hope its ok to say that on the boards, if not let me know and I will remove it from my post .