2.4 tft lcd shield arduino mega example factory
I struggled with a SainSmart 3.2 LCD and adapter card and then realized I had the libraries and examples in the wrong folders as well as the wrong model number. Using Sain Smart download (link below) or Henning"s code I had the same problems - because I was making the same mistakes. Here was my solution:
So, the new auto import puts libraries where they need to be. Using IDE Arduino 1.5.2 you can import the zip file ( Sketch|> Import Library|> Add Library...) the 32lcd.zip file from Sain Smart document needs to be renamed because it starts with a number so rename the zip to something like SS32lcd.zip. The automatic import of arduino 1.5.2 IDE will put the UTFT library files in the right place. You will still need to copy the example folder over to the example folder in the ....\arduino-1.5.2 IDE installed folder for them to show up in the File|>Examples|> menu. You can save your changes into your sketchbook and your customization will be preserved there.
Once you see how the auto library import install sets up the folders using the zip file you could use Henning"s rar files extracted and moved to the same places - I haven"t figured how to get the arduino import to accept a RAR file
Some of you may have purchased this LCD Screen or thinking of getting one. Its a great screen for displaying images and graphics. I purchased mine for displaying sensor data from my 10 sensors on my robot via xbee (telemetry). I bought it not only out of impulse as it was very cheap but also that it was the biggest screen i could find cheaply in Australia. ($15).
Adafruit GFX graphics core Arduino library, this is the "core" class that all our other graphics libraries derive from - GitHub - adafruit/Adafruit-GFX-Library: Adafruit GFX graphics core A...
This will allow you to use the screen on the arduino MEGA. In terms of the connections from the screen to the mega, just plug it in like a shield the same way as you do when connecting it to the UNO.
Spice up your Arduino project with a beautiful touchscreen display shield with built in microSD card connection. This TFT display is 2.4" diagonal and colorful (18-bit 262,000 different shades)! 240x320 pixels with individual pixel control. As a bonus, this display has a optional capacitive touch panel and resistive touch panel with controller XPT2046 attached by default.
The shield is fully assembled, tested and ready to go. No wiring, no soldering! Simply plug it in and load up our library - you"ll have it running in under 10 minutes! Works best with any classic Arduino (UNO/Due/Mega 2560).
This display shield has a controller built into it with RAM buffering, so that almost no work is done by the microcontroller. You can connect more sensors, buttons and LEDs.
Of course, we wouldn"t just leave you with a datasheet and a "good luck!" - we"ve written a full open source graphics library at the bottom of this page that can draw pixels, lines, rectangles, circles and text. We also have a touch screen library that detects x,y and z (pressure) and example code to demonstrate all of it. The code is written for Arduino but can be easily ported to your favorite microcontroller!
If you"ve had a lot of Arduino DUEs go through your hands (or if you are just unlucky), chances are you’ve come across at least one that does not start-up properly.The symptom is simple: you power up the Arduino but it doesn’t appear to “boot”. Your code simply doesn"t start running.You might have noticed that resetting the board (by pressing the reset button) causes the board to start-up normally.The fix is simple,here is the solution.
Voltage type: 5v or 3v voltage input voltage,input is selectable. Because TFT can only work under 3.3 V voltage, so when the input voltage VIN is 5V, need through the 3.3 V voltage regulator IC step down to 3.3V , when the input voltage of 3.3 V, you need to use the zero resistance make J2 short , is equivalent to not through the voltage regulator IC for module and power supply directly.
The 2.4 inch TFT LCD Touch Display Shield is a Bright, 4 white-LED backlight, on by default but you can connect the transistor to a digital pin for backlight control. So spice up your Arduino UNO project is a beautiful large touchscreen display shield with a built-in microSD card connection. This TFT display is big (2.4″ diagonal) bright (4 white-LED backlights) and colorful (18-bit 262,000 different shades)!
2.4 inch TFT LCD Touch Display Shield for ArduinoUno is fully assembled, tested and ready to go. Add the touch display without wiring, no soldering! Simply plug it in and load up a library – you ‘ll have it running in under 10 minutes! Works best with any classic Arduino ATMEGA328 Board.
The 2.4 inch TFT LCD Touch Display comes with 240×320 pixels with individual pixel control. It has way more resolution than a black and white 128×64 display. As a bonus, this display has a resistive touchscreen attached to it already, so you can detect finger presses anywhere on the screen.
The 2.4 ” tft lcd touch screen shield for Arduino can be used in a number of applications. However many of the shields available on the market are cloned versions which usually give many hobbyists hard time to use because they do not work properly with the common libraries for running TFT displays.
If you try uploading any of the examples in the Adafruit_GFX library for example the “graphicstest”, the lcd will just give a white screen. Nothing is displayed on the screen!
This problem is mainly due to using a newer version of the Adafruit GFX library. The 1.5.4 release of the Adafruit_GFX library broke compatibility with the Adafruit_TFTLCD library. So you have to roll back to Adafruit_GFX 1.5.3:
Another problem you may encounter with this tft lcd shield is the poor fuctioning of the touch screen. You may find the stylus pen is not well aligned with the content you are writing on the screen.
This is due to a bug in the TouchScreen library therefore you need to locate this library by following the path to where all the libraries for your Arduino IDE are stored.
You can keep on adjusting the values of before x and y until you get an ideal point that works best for your tft lcd. Mine worked fine with return TSPoint(x, 1105-y, z)
Due to the limited processing power of the microprocessor in the Arduino, we need to store images in bmp format and they should be 320×240 pixels sizes.
Let"s get started with this creative Arduino project, where you"ll learn about the TFT LCD touch screen and how to use it to create your own colourful calculator. For a basic understanding of touch screen & LCD, a cheap TFT 2.4" Arduino shield is used to create this project. For creating a similar project, one should follow the steps and edit the code for better understanding.
The shield connects ILI9341"s data pins 0-7 to Arduino"s digital pins 2-8 (allowing parallel communication, not SPI. ILI9341"s RESET goes to Arduino analog pin A4. CS (chip select) to A3. RS (CD command/data) to A2. WR and RD to A1 and A0.
ILI9341 is integrated inside the display. It drives the display and has nothing to do with the touchscreen (Although the shield connects some pins of ILI9341 together with pins of the touchscreen).
Now, open Arduino IDE and select Sketch -> Include Library -> Add .ZIP library. A browser window will open navigate to the ZIP file and click “OK”. You should notice “Library added to your Libraries” on the bottom-left corner of Arduino, if successful.
You can also find an SD card slot at the bottom of the module shown above, which can be used to load an SD card with BMP image files, and these images can be displayed on our TFT LCD screen using the Arduino Program.
The 2.4” TFT LCD screen is a perfect Arduino Shield. You can directly push the LCD screen on top of the Arduino Uno and it will perfectly match with the pins and slid in through. However, as matters of safety cover the programming terminal of your Arduino UNO with some insulator, just in case if the terminal comes in contact with your TFT LCD screen.