arduino tft lcd 240x320 sd display bmp supplier

Anyway now I commented that line, beacuse I am not interested in speed right now. But now the problem seems to be the programation code. the error message is as follows: ( I am using Arduino 1.8.7)

C:\Users\ADMIRAL\Videos\arduino\Libraries\Adafruit_ILI9341_AS\examples\ILI9341_draw_bitmap_v2\ILI9341_draw_bitmap_v2.ino:101:37: warning: ISO C++ forbids converting a string constant to "char*" [-Wwrite-strings]

C:\Users\ADMIRAL\Videos\arduino\Libraries\Adafruit_ILI9341_AS\examples\ILI9341_draw_bitmap_v2\ILI9341_draw_bitmap_v2.ino:106:42: warning: ISO C++ forbids converting a string constant to "char*" [-Wwrite-strings]

C:\Users\ADMIRAL\Videos\arduino\Libraries\Adafruit_ILI9341_AS\examples\ILI9341_draw_bitmap_v2\ILI9341_draw_bitmap_v2.ino:118:39: warning: ISO C++ forbids converting a string constant to "char*" [-Wwrite-strings]

C:\Users\ADMIRAL\Videos\arduino\Libraries\Adafruit_ILI9341_AS\examples\ILI9341_draw_bitmap_v2\ILI9341_draw_bitmap_v2.ino:121:42: warning: ISO C++ forbids converting a string constant to "char*" [-Wwrite-strings]

C:\Users\ADMIRAL\Videos\arduino\Libraries\Adafruit_ILI9341_AS\examples\ILI9341_draw_bitmap_v2\ILI9341_draw_bitmap_v2.ino:151:40: warning: ISO C++ forbids converting a string constant to "char*" [-Wwrite-strings]

C:\Users\ADMIRAL\Videos\arduino\Libraries\Adafruit_ILI9341_AS\examples\ILI9341_draw_bitmap_v2\ILI9341_draw_bitmap_v2.ino:163:39: warning: ISO C++ forbids converting a string constant to "char*" [-Wwrite-strings]

C:\Users\ADMIRAL\Videos\arduino\Libraries\Adafruit_ILI9341_AS\examples\ILI9341_draw_bitmap_v2\ILI9341_draw_bitmap_v2.ino:176:37: warning: ISO C++ forbids converting a string constant to "char*" [-Wwrite-strings]

C:\Users\ADMIRAL\Videos\arduino\Libraries\Adafruit_ILI9341_AS\examples\ILI9341_draw_bitmap_v2\ILI9341_draw_bitmap_v2.ino:183:38: warning: ISO C++ forbids converting a string constant to "char*" [-Wwrite-strings]

C:\Users\ADMIRAL\Videos\arduino\Libraries\Adafruit_ILI9341_AS\examples\ILI9341_draw_bitmap_v2\ILI9341_draw_bitmap_v2.ino:188:38: warning: ISO C++ forbids converting a string constant to "char*" [-Wwrite-strings]

C:\Users\ADMIRAL\Videos\arduino\Libraries\Adafruit_ILI9341_AS\examples\ILI9341_draw_bitmap_v2\ILI9341_draw_bitmap_v2.ino:193:38: warning: ISO C++ forbids converting a string constant to "char*" [-Wwrite-strings]

C:\Users\ADMIRAL\Videos\arduino\Libraries\Adafruit_ILI9341_AS\examples\ILI9341_draw_bitmap_v2\ILI9341_draw_bitmap_v2.ino:198:38: warning: ISO C++ forbids converting a string constant to "char*" [-Wwrite-strings]

C:\Users\ADMIRAL\Videos\arduino\Libraries\Adafruit_ILI9341_AS\examples\ILI9341_draw_bitmap_v2\ILI9341_draw_bitmap_v2.ino:205:39: warning: ISO C++ forbids converting a string constant to "char*" [-Wwrite-strings]

C:\Users\ADMIRAL\Videos\arduino\Libraries\Adafruit_ILI9341_AS\examples\ILI9341_draw_bitmap_v2\ILI9341_draw_bitmap_v2.ino:210:39: warning: ISO C++ forbids converting a string constant to "char*" [-Wwrite-strings]

C:\Users\ADMIRAL\Videos\arduino\Libraries\Adafruit_ILI9341_AS\examples\ILI9341_draw_bitmap_v2\ILI9341_draw_bitmap_v2.ino:215:39: warning: ISO C++ forbids converting a string constant to "char*" [-Wwrite-strings]

C:\Users\ADMIRAL\Videos\arduino\Libraries\Adafruit_ILI9341_AS\examples\ILI9341_draw_bitmap_v2\ILI9341_draw_bitmap_v2.ino:220:39: warning: ISO C++ forbids converting a string constant to "char*" [-Wwrite-strings]

C:\Users\ADMIRAL\Videos\arduino\Libraries\Adafruit_ILI9341_AS\examples\ILI9341_draw_bitmap_v2\ILI9341_draw_bitmap_v2.ino: In function "void drawBMP(char*, int, int, boolean)":

C:\Users\ADMIRAL\Videos\arduino\Libraries\Adafruit_ILI9341_AS\examples\ILI9341_draw_bitmap_v2\ILI9341_draw_bitmap_v2.ino:267:40: warning: converting to non-pointer type "int" from NULL [-Wconversion-null]

C:\Users\ADMIRAL\Videos\arduino\Libraries\Adafruit_ILI9341_AS\examples\ILI9341_draw_bitmap_v2\ILI9341_draw_bitmap_v2.ino: In function "void drawRAW(char*, int16_t, int16_t, int16_t, int16_t)":

C:\Users\ADMIRAL\Videos\arduino\Libraries\Adafruit_ILI9341_AS\examples\ILI9341_draw_bitmap_v2\ILI9341_draw_bitmap_v2.ino:377:40: warning: converting to non-pointer type "int" from NULL [-Wconversion-null]

C:\Users\ADMIRAL\Videos\arduino\Libraries\Adafruit_ILI9341_AS\examples\ILI9341_draw_bitmap_v2/ILI9341_draw_bitmap_v2.ino:355: undefined reference to `FatFile::close()"

C:\Users\ADMIRAL\Videos\arduino\Libraries\Adafruit_ILI9341_AS\examples\ILI9341_draw_bitmap_v2/ILI9341_draw_bitmap_v2.ino:338: undefined reference to `FatFile::read(void*, unsigned int)"

Hello, this tutorial is a follow up of the 2 other ones about the 2.4″ TFT LCD Shield with Arduino UNO, so the first one was about Interfacing and fixing the touch function problem also inverted axis, then the second one was about using simple function to draw different shapes and how to create a touch button to activate some functions…

But today we’re about the reading of images from SD card and showing them on the screen, first don’t forget to plug your SD card with your computer and format it as FAT32 then transfert your images don’t forget that they should be “BMP” format, Bitmaps 24 !! To have a correct image the resolutions should be 240*320, little explanation:

So you can chose whatever suits you, either change the screen rotation or the image rotation on your PC… then remeber or copy the image name and that’s it, plug your SD card in the shield.

The liquid crystal display module based on SPI communication interface, provide 2.8 "TFT LCD, resistive touch screen, built-in Flash flash and SD card external expansion storage. This TFT panel connects directly on top of an Arduino pin compatible device.

2.Extract the content to your Arduino library folder. In Windows this is usually located in Arduino IDE folder\libraries. Check Arduino"s official guide if you want more information on how to install the Arduino Library. The official guide of Arduino

Arduino has always helped to build projects easily and make them look more attractive.  Programming an LCD screen with touch screen option might sound as a complicated task, but the Arduino libraries and shields had made it really easy. In this project we will use a 2.4” Arduino TFT LCD screen to build our own Arduino Touch Screen calculator that could perform all basic calculations like Addition, Subtraction, Division and Multiplication.

Before we actually dive into the project it is important to know, how this 2.4” TFT LCD Module works and what are the types present in it. Let us take a look at the pinouts of this 2.4” TFT LCD screen module.

As you can see there are 28 pins which will perfectly fit into any Arduino Uno / Arduino Mega Board. A small classification of these pins is given in the table below.

As you can see the pins can be classified in to four main classifications such as LCD Command Pins, LCD Data Pins, SD Card Pins and Power Pins, We need not know much about the detailed working of these pins since they will be take care by our Arduino Library.

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 in our TFT LCD screen using the Arduino Program.

Another important thing to note is your Interface IC. There are many types of TFT modules available in the market starting from the original Adafruit TFT LCD module to cheap Chinese clones. A program which works perfectly for your Adafruit shield might not work the same for Chinese breakout boards. So, it is very important to know which types of LCD display your are holding in hand. This detail has to be obtained from the vendor. If you are having a cheap clone like mine then it is most probably using the ili9341 driver IC.You can follow this TFT LCD interfacing with Arduino tutorial to try out some basic example programs and get comfortable with the LCD screen. Also check out our other TFT LCD projects with Arduino here:

If you planning to use the touch screen function of your TFT LCD module, then you have to calibrate it to make it work properly.  A LCD screen without calibration might work unlikely, for instance you might touch at one place and the TFT might respond for a touch at some other place. These calibrations results will not be similar for all boards and hence you are left on your own to do this.

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 a small insulation tape, just in case if the terminal comes in contact with your TFT LCD screen. The LCD assembled on UNO will look something like this below.

We are using the SPFD5408 Library to get this arduino calculator code working. This is a modified library of Adafruit and can work seamlessly with our LCD TFT Module. You can check the complete program at the end of this Article.

Now, open Arduino IDE and select Sketch -> Include Librarey -> 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. A detailed guide to do the same is given in the Interfacing Tutorial.

Now, you can use the code below in your Arduino IDE and upload it to your Arduino UNO for the Touch Screen Calculator to work. Further down, I have explained the code into small segments.

As said earlier we need to calibrate the LCD screen to make it work as expected, but don’t worry the values given here are almost universal. The variables TS_MINX, TS_MINY, TS_MAXX, and TS_MAXY decide the calibration of the Screen. You can toy around them if you feel the calibration is not satisfactory.

As we know the TFT LCD screen can display a lot of colours, all these colours have to be entered in hex value. To make it more human readable we assign these values to a variable as shown below.

Okay now, we can get into the programming part. There are three sections involved in this program. One is creating a UI of a calculator with buttons and display. Then, detecting the buttons based on the users touch and finally calculating the results and display them. Let us get through them one by one.

This is where you can use a lot of your creativity to design the User Interface of calculator. I have simply made a basic layout of a calculator with 16 Buttons and one display unit. You have to construct the design just like you will draw something on MS paint. The libraries added will allow you to draw Lines, Rectangle, Circles, Chars, Strings and lot more of any preferred colour. You can understand the available functions from this article.

Another challenging task is detecting the user touch. Every time the user touches somewhere we will able to how where the X and Y position of the pixel he touched. This value can be displayed on the serial monitor using the println as shown below.

The final step is to calculate the result and display them on TFT LCD Screen. This arduino calculator can perform operation with 2 numbers only. These two numbers are named as variables “Num1” and “Num2”. The variable “Number” gives and takes value from Num1 and Num2 and also bears the result.

The working of this Arduino Touch Screen Calculator is simple. You have to upload the below given code on your Arduino and fire it up. You get the calculator displayed on your LCD screen.

A 2.4” TFT LCD module consists of a bright backlight (4 white LEDs) and a colourful 240X320 pixels display. It also features individual RGB pixel control giving a much better resolution than the black and white displays. A resistive touch screen comes pre-installed with the module as a bonus and hence you can easily detect your finger presses anywhere on the screen.

This mode is generally used when speed is not the priority. It is very easy to port to different microcontrollers. In SPI mode, microSD card socket can be used on the same SPI bus. It sends one bit at a time, hence it is slower than the 8-bit mode which sends all the bits in parallel.

The TFT comes with an auto-reset circuit which gets active on every breakout. However, a user can reset the module using this pin also, in case setup is not resetting clean.

The TFT comes with an auto-reset circuit which gets active on every breakout. However, a user can reset the module using this pin also, in case setup is not resetting clean.

Resistive Touch Pins – Y+, X+, Y-, and X- are the 4 resistive touch pins which require analog pins to read and determine touch pins. Their overlay is fixed at the top of the module which makes them electrically separate from the TFT. They can be used is 8-bit as well as SPI mode.

The 2.4” TFT LCD module supports many modes. However, two of them are very popular among users – “SPI mode” and “8-bit mode”. The display contains pins on both sides required for a mode and a user can switch easily between them by simply rewiring the display. It should be noted that only one mode can be used at a time.

The 74LVX245 chip is responsible for interfacing the display with MCU/MPU; it provides fast level shifting so that the user can work on both the logic levels. All the pins are 3.5V logic level compatible. However, if there is an output, the level goes at 3.3V.

A 2.4” TFT module has a very flexible usage. It is compatible with all your DIY projects where you want to add a bright, colourful, and touchscreen enabled display.

The Shield TFT is usually supplied with an SD card module to store data or images. Touchscreen LCDs to display images and create graphical user interfaces. In this tutorial, we use the Kuman TFT 2.8″ shield (very similar to the 3.5″ shield) and we will see how to interface with the microSD card.

The shield is placed directly on an Arduino UNO or Mega board. The shield uses almost all the pins of the Arduino UNO. Make sure you don’t use the same ones for other modules. The SD card module of the TFT shield uses the SPI bus and selector pin 10.

The main interest of the MicroSD module on the TFT shield is to be able to store images in order to display them on the screen. If you don’t have a bitmap image at hand, you can download the one we use in this example.

We will create a button for each file and with the help of the previous function we will display the images contained in the SD card when we press the corresponding button.

Once the code is uploaded, a menu will appear with a button for each file contained on the SD card. If you press a button, the corresponding bitmap image will be displayed on the screen. If you press the screen again you will return to the main menu.

In electronics world today, Arduino is an open-source hardware and software company, project and user community that designs and manufactures single-board microcontrollers and microcontroller kits for building digital devices. Arduino board designs use a variety of microprocessors and controllers. The boards are equipped with sets of digital and analog input/output (I/O) pins that may be interfaced to various expansion boards (‘shields’) or breadboards (for prototyping) and other circuits.

The boards feature serial communications interfaces, including Universal Serial Bus (USB) on some models, which are also used for loading programs. The microcontrollers can be programmed using the C and C++ programming languages, using a standard API which is also known as the “Arduino language”. In addition to using traditional compiler toolchains, the Arduino project provides an integrated development environment (IDE) and a command line tool developed in Go. It aims to provide a low-cost and easy way for hobbyist and professionals to create devices that interact with their environment using sensors and actuators. Common examples of such devices intended for beginner hobbyists include simple robots, thermostats and motion detectors.

In order to follow the market tread, Orient Display engineers have developed several Arduino TFT LCD displays and Arduino OLED displays which are favored by hobbyists and professionals.

Although Orient Display provides many standard small size OLED, TN and IPS Arduino TFT displays, custom made solutions are provided with larger size displays or even with capacitive touch panel.

In this guide we’re going to show you how you can use the 1.8 TFT display with the Arduino. You’ll learn how to wire the display, write text, draw shapes and display images on the screen.

The 1.8 TFT is a colorful display with 128 x 160 color pixels. The display can load images from an SD card – it has an SD card slot at the back. The following figure shows the screen front and back view.

This module uses SPI communication – see the wiring below . To control the display we’ll use the TFT library, which is already included with Arduino IDE 1.0.5 and later.

The TFT display communicates with the Arduino via SPI communication, so you need to include the SPI library on your code. We also use the TFT library to write and draw on the display.

In which “Hello, World!” is the text you want to display and the (x, y) coordinate is the location where you want to start display text on the screen.

The 1.8 TFT display can load images from the SD card. To read from the SD card you use the SD library, already included in the Arduino IDE software. Follow the next steps to display an image on the display:

Note: some people find issues with this display when trying to read from the SD card. We don’t know why that happens. In fact, we tested a couple of times and it worked well, and then, when we were about to record to show you the final result, the display didn’t recognized the SD card anymore – we’re not sure if it’s a problem with the SD card holder that doesn’t establish a proper connection with the SD card. However, we are sure these instructions work, because we’ve tested them.

In this guide we’ve shown you how to use the 1.8 TFT display with the Arduino: display text, draw shapes and display images. You can easily add a nice visual interface to your projects using this display.