I thought this, I could test without any problems with the demo code. unfortunately nothing works here.
My configuration is as follows:
Accessory for Parallel Interface(By Default)
8080 Parallel Interface Accessory for Serial Interface
4-wire Serial Interface Accessory for MicroSD Card Interface
SD Mode MricroSD Card
1GB MricroSD Card 5 inch Touch Panel
Capacitive Touch Panel+ Controller+Connector Flash Memory Chip (Not Installed)
128M bit Font Chip (Refer to Doc “Summary for Font Chip")
ER3300-1
I think the demo code is for serial use.
can anyone help me how to run this so I get it around to experiment?
Also, it seems that the maximum logic voltage of the control chip is 4v.... arduinos output 5v. you might need level shifter, I'm not sure though because the wiring diagram doesn't show one between the arduino and board, so perhaps the board takes care of that for you....
I meant a diagram, How do we know you connected it correctly without a diagram? Did you make sure the jumpers on the IC for the display were set correctly?
I bought one of these displays, but i plan to hook it up via SPI.... The diagram shows how to wire it, but i downloaded the libraries, and it doesn't seem like it is supported in the library, which means you'd have to write your own library, which is more than i can help you with
hi i have no idea of the control displays. I thought I'd get it if I would buy a display with matching libs. Can you tell me where I can find the information to write such a lib? or you can give me your as a template?
I think the demo code is for serial use.
can anyone help me how to run this so I get it around to experiment?
What software are you using? There are many versions of UTFT "library".
What is the actual controller you are using ( RA8875?) Verify that your software can use / run with the controller.
Verify that your software is compatible with your hardware I/O. SOME UTFT "libraries" will only work with certain "shields".
Make sure your address bus selection is correct, the doc will say you can select it , but it MAY be "factory" fixed and you are stuck with whatever it is.
If you are going to "experiment" make a local copy of your library so you can modify it to your liking.
As any LCD your s has "controls" and "data" I/O - make sure the controls are connected correctly.
I have one which has "RST" and "REST" and they both refer to "reset" signal which needs to be high for LCD to operate.
Please let me know if you need more assitance, I generally skip over "team" replies.
Hello, I use the software provided by the seller. I could not find a version of UTFT. I use the RA8875 controller. this is supposed to work, according to data sheet of the seller. I have this connected with no shields, just as in the pdf of this seller. the problem is that on the screen does nothing.
moritz5535:
Hello, I use the software provided by the seller. I could not find a version of UTFT. I use the RA8875 controller. this is supposed to work, according to data sheet of the seller. I have this connected with no shields, just as in the pdf of this seller. the problem is that on the screen does nothing.
How can I proceed?
Verify backlight operation first. You most likely need SEPARATE supply connection ( +5V) and ground.
Check the datasheet to make sure you do not NEED limiting resistors or contrast control( unlikely).
( I am just downloading it)
Verify the data bus width setting ( serial or 16 bits 8080 style?)
moritz5535:
the backlight works. and the bus is correctly connected. I use 16 bit 8080 style.
I think the libraries provided do not work with 16-bit 8080 style.
What do you think?
Can you send me the link to the library you are using?
( There is too many on the vendor site).
BTW nice documentation, seldom seen.
I have experienced some difficulty decoding the data bus setting on my TFT - only to find out it cannot be changed anyway.
Any reason you went with 16 bit bus instead of I2C? Just curious.
From what I've read to use parallel you have to be able to refresh the lines at 22mhz. Not an expert on that, however I do know that Arduino can't do that.. I'd suggest sticking to i2c/spi
I'm waiting for a few more parts before I can get started...
Are you using the resistive touch or the capacitive touch? The capacitive touch library (if on an Arduino) takes up almost all of the ram available.... So you would need multiple megas, based on what I'm reading.
Did you get this working? I'm considering a TFT from buydisplay but never messed with these before. Doing lots of reading ... is the capacitive touch generally considered to be better than resistive? Or is it just that these particular displays are easier to use when using the capacitive touch library?