37697 tft lcd free sample

Hi, my LCD 2.4" from eBay (mcufriend, dont know what chip it uses) does not work with MCUFRIEND_kbv library, but works with spfd5408 library from adafruit. reversed axis fixed by changing code to this:

I recently purchased one of these http://www.adafruit.com/product/2090 and hooked it up in 8-bit mode to my Arduino Uno. The "normal" TFT methods (drawPixel, drawLine, etc) work perfectly but I can"t seem to get pushColors to work. I"ve tried both my own code and a modified version of the bmp example (I don"t have an SD card).

Another possible clue is I"ve just tried using tft.readPixel right after the call to pushColors and it always returns 0. Even when I just filled the screen with white or when I wrote the blue numbers.

LCD_MAX_WIDTH and LCD_MAX_HEIGHT must be explicitly #defined as longs (append "L" to value), else multiplication shenanigans occur (despite "i" being long):

LCD_MAX_WIDTH and LCD_MAX_HEIGHT must be explicitly #defined as longs (append "L" to value), else multiplication shenanigans occur (despite "i" being long):

Please check that you"re using the latest version of the TFTLCD library (either via the Library Manager, or manually in the Arduino/libraries folder if that"s how you installed it). Also confirm that you don"t have two copies installed different ways; it might be latching onto an older version.

These are definitely different than what I see here: https://github.com/adafruit/TFTLCD-Library. When I get home I"ll try a local import of the most recent version and see if that helps.

In this Arduino touch screen tutorial we will learn how to use TFT LCD Touch Screen with Arduino. You can watch the following video or read the written tutorial below.

As an example I am using a 3.2” TFT Touch Screen in a combination with a TFT LCD Arduino Mega Shield. We need a shield because the TFT Touch screen works at 3.3V and the Arduino Mega outputs are 5 V. For the first example I have the HC-SR04 ultrasonic sensor, then for the second example an RGB LED with three resistors and a push button for the game example. Also I had to make a custom made pin header like this, by soldering pin headers and bend on of them so I could insert them in between the Arduino Board and the TFT Shield.

Here’s the circuit schematic. We will use the GND pin, the digital pins from 8 to 13, as well as the pin number 14. As the 5V pins are already used by the TFT Screen I will use the pin number 13 as VCC, by setting it right away high in the setup section of code.

I will use the UTFT and URTouch libraries made by Henning Karlsen. Here I would like to say thanks to him for the incredible work he has done. The libraries enable really easy use of the TFT Screens, and they work with many different TFT screens sizes, shields and controllers. You can download these libraries from his website, RinkyDinkElectronics.com and also find a lot of demo examples and detailed documentation of how to use them.

After we include the libraries we need to create UTFT and URTouch objects. The parameters of these objects depends on the model of the TFT Screen and Shield and these details can be also found in the documentation of the libraries.

So now I will explain how we can make the home screen of the program. With the setBackColor() function we need to set the background color of the text, black one in our case. Then we need to set the color to white, set the big font and using the print() function, we will print the string “Arduino TFT Tutorial” at the center of the screen and 10 pixels  down the Y – Axis of the screen. Next we will set the color to red and draw the red line below the text. After that we need to set the color back to white, and print the two other strings, “by HowToMechatronics.com” using the small font and “Select Example” using the big font.

In this tutorial, you will learn how to use and set up 2.4″ Touch LCD Shield for Arduino. First, you’ll see some general information about this shield. And after learning how to set the shield up, you’ll see 3 practical projects.

The role of screens in electronic projects is very important. Screens can be of very simple types such as 7 Segment or character LCDs or more advanced models like OLEDs and TFT LCDs.

One of the most important features of this LCD is including a touch panel. If you are about to use the LCD, you need to know the coordinates of the point you touch. To do so, you should upload the following code on your Arduino board and open the serial monitor. Then touch your desired location and write the coordinates displayed on the serial monitor. You can use this coordination in any other project.

To display pictures on this LCD you should save the picture in 24bit BMP colored format and size of 240*320. Then move them to SD card and put the SD card in the LCD shield. we use the following function to display pictures. This function has 3 arguments; the first one stands for the pictures name, and the second and third arguments are for length and width coordinates of the top left corner of the picture.