elegoo 2.8 tft display free sample
I developed this game a long time ago for an Arduino UNO board but without using sound. I just adapted it for this new screen and the Elegoo Mega 2560 R3 board and added sounds produced by a passive buzzer to enhance the gaming experience.
You have to calibrate the display so that the position information is correct when you touch the display. MCUFriend_kbv library provides an example with the name "TouchScreen_Calibr_native". The example send the results to the serial port. Start the serial monitor of the Arduino IDE so you can copy the code generated by the example.
Follow the instructions on the touch display, press and hold the position markers displayed, which are highlighted in white. Once you have done all the position marks, the calibration of the display is output to you on the touch display and by the serial port.
/*==============================================================* Created by Ing. Piero Cimule Troise* Contact Info: piero.cimule@gmail.com* IG: @skylinkCE* Weather Station Components:* ELEGO 2.8" TFT Tounch Screen Shield* Arduino Mega 2560 Board* Jumpers & Wires* DTH11 Temperture & Humidity Sensor* BreadBoard*// IMPORTANT: Elegoo_TFTLCD LIBRARY MUST BE SPECIFICALLY// CONFIGURED FOR EITHER THE TFT SHIELD OR THE BREAKOUT BOARD.*==============================================================*/// Libraries Declaration#include
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.
Enclosure for Adafruit 2.8" TFT LCD with a GoPro mount on the rear for use with all of your GoPro accessories! The touchscreen is held in place with a separate fastening piece to ensure it does not move or rattle. Please note that this enclosure does...
I needed an accurate model of the 2.8" TFT shield for the Arduino. ...It was a bit of a challenge as these are not manufactured to the tightest tolerances so I added some standard deviation to the model so that it should fit most use cases.- Pinheader...
Case for the screen 2.8 inches 320x240 such as 240x320 2.8" SPI TFT LCD Touch Panel Serial Port Module With PBC ILI9341 2.8 Inch SPI Serial White LED Display with Touch Pen
This is the first version of a case for a 2.2" SPI TFT LCD Display module. I have to add mount points to mount the display. Then I have to deside how to wire it.
This is a front case to hold and protect my SPI TFT 2.8" display (touchscreen display with the ILI9341 chip). ...It has some holes in the laterals to pass the wires and change the SD card.
As an example i used the color weather station of Dani Eichhorn - https://blog.squix.org/2016/10/esp8266-weather-station-color-code-published.html (Note I used a slightly different TFT, a TJCTM24024-SPI which has the same electronics but is 2.4"...
A small, thin and light 1.8 inch TFT LCD wall mount. The mount is composed out of two pieces, a wall bracket that screws into the wall (or other panel) and a cover which hides the screws and holds the display in place. To route the display cable you...
Displaying a custom image or graphic on a LCD display is a very useful task as displays are now a premium way of providing feedback to users on any project. With this functionality, we can build projects that display our own logo, or display images that help users better understand a particular task the project is performing, providing an all-round improved User Experience (UX) for your Arduino or ESP8266 based project. Today’s tutorial will focus on how you can display graphics on most Arduino compatible displays.
The procedure described in this tutorial works with all color displays supported by Adafruit’s GFX library and also works for displays supported by the TFTLCD library from Adafruit with little modification. Some of the displays on which this procedure works include:
While these are the displays we have, and on which this tutorial was tested, we are confident it will work perfectly fine with most of the other Arduino compatible displays.
For each of the displays mentioned above, we have covered in past how to program and connect them to Arduino. You should check those tutorials, as they will give you the necessary background knowledge on how each of these displays works.
For this tutorial, we will use the 2.8″ ILI9325 TFT Display which offers a resolution of 320 x 340 pixels and we will display a bitmap image of a car.
As usual, each of the components listed above can be bought from the links attached to them. While having all of the displays listed above may be useful, you can use just one of them for this tutorial.
To demonstrate how things work, we will use the 2.8″ TFT Display. The 2.8″ TFT display comes as a shield which plugs directly into the Arduino UNO as shown in the image below.
Not all Arduino displays are available as shields, so when working with any of them, connect the display as you would when displaying text (we recommend following the detailed tutorial for the display type you use of the above list). This means no special connection is required to display graphics.
Before an image is displayed on any of the Arduino screens, it needs to be converted to a C compatible hex file and that can only happen when the image is in bitmap form. Thus, our first task is to create a bitmap version of the graphics to be displayed or convert the existing image to a bitmap file. There are several tools that can be used for creation/conversion of bitmap images including, Corel Draw and Paint.net, but for this tutorial, we will use the Paint.net.
The resolution of the graphics created should be smaller than the resolution of your display to ensure the graphics fit properly on the display. For this example, the resolution of the display is 320 x 340, thus the resolution of the graphics was set to195 x 146 pixels.
Image2Code is an easy-to-use, small Java utility to convert images into a byte array that can be used as a bitmap on displays that are compatible with the Adafruit-GFX or Adafruit TFTLCD (with little modification) library.
With this done, we are now ready to write the code. Do note that this procedure is the same for all kind of displays and all kind of graphics. Convert the graphics to a bitmap file and use the Img2code utility to convert it into a hex file which can then be used in your Arduino code.
To reduce the amount of code, and stress involved in displaying the graphics, we will use two wonderful libraries; The GFX library and the TFTLCD library from Adafruit.
The GFX library, among several other useful functions, has a function called drawBitmap(), which enables the display of a monochrome bitmap image on the display. This function allows the upload of monochrome only (single color) graphics, but this can be overcome by changing the color of the bitmap using some code.
The Adafruit libraries do not support all of the displays but there are several modifications of the libraries on the internet for more displays. If you are unable to find a modified version of the library suitable for your the display, all you need do is copy the code of the drawBitmap() function from the GFX library and paste it in the Arduino sketch for your project such that it becomes a user-defined function.
The first two are thex and y coordinates of a point on the screen where we want the image to be displayed. The next argument is the array in which the bitmap is loaded in our code, in this case, it will be the name of the car and the text array located in the graphics.c file. The next two arguments are the width and height of the bitmap in pixels, in other words, the resolution of the image. The last argument is the color of the bitmap, we can use any color we like. The bitmap data must be located in program memory since Arduino has a limited amount of RAM memory available.
As usual, we start writing the sketch by including the libraries required. For this procedure, we will use the TFTLCD library alone, since we are assuming you are using a display that is not supported by the GFX library.
Next, we specify the name of the graphics to be displayed; car and title. At this stage, you should have added the bit array for these two bitmaps in the graphics.c file and the file should be placed in the same folder as the Arduino sketch.
With that done, we proceed to the void loop function, under the loop function, we call the drawbitmap() function to display the car and the text bitmap using different colors.
The last section of the code is the drawBitmap function itself, as earlier mentioned, to use the drawbitmap() function with the Adafruit TFTLCD library, we need to copy the function’s code and paste into the Arduino sketch.
Plug in your screen as shown above. If you are using any other display, connect it as shown in the corresponding linked tutorial. With the schematics in place, connect the Arduino board to your PC and upload the code. Don’t forget the graphics file needs to be in the same folder as the Arduino sketch.
That’s it for this tutorial guys. The procedure is the same for all kinds of Arduino compatible displays. If you get stuck while trying to replicate this using any other display, feel free to reach out to me via the comment sections below.
First step to do is opening the CD and reading the manual which is in PDF format… After that, chose the examples to see what is possible to do with TFT Display and the Arduino.
Keywords necessary for me to create this blog post: TFT Displays, video tutorials, Arduino UNO, Arduino Mega, Bitmaps, TFT size, Bitmaps size, 24-bit Bitmaps, Sketch, Coding, Slide-Show, SDCard, badge, Paint, image editor, photo editor,
Hey guys, its Nick again, welcome to educ8s.tv a channel that is all about DIY electronics projects with Arduino, Raspberry Pi, ESP8266 and other popular boards. Today we are going to take a look at how to use the inexpensive, ILI9325 driver based, 2.8” touchscreen display designed for Arduino and at the end of this tutorial, you should be able to determine ifthis Touch Screen is a good option for your Arduino projects.
As shown in the video above, we will be performing simple tasks with the display to demonstrate how it works such that, When we press a button on the screen, a message will be displayed it. This means we will learn both how to create a button on the screen such that it can be touched and how to display messages on the screen.
The display comes as a shield which makes the connection with Arduino extremely easy, thus all that needs to be done for this project is to plug the display into the Arduino board since we won’t be adding any other sensor or actuator.
One of the few downsides to this display is that it uses almost all of the digital and analog pins of the Arduino Uno which means when using this shield, we are left with only 2 digital pins and 1 analog pin for connections to other components that the project we are building might require.
Fortunately, this display works fine with the Arduino Mega, so when working on projects with more pin requirements and size is not really an issue, we can use the Arduino Mega instead of the Arduino Uno. Unfortunately, this display does not work with some other Arduino Uno form factor based boards like the Arduino Due or the Wemos D1 ESP8266 board due to pin compatibility and library Issues.
In order to use this Arduino Touch Screen easily, we will need three libraries. We will need a modified version of the Adafruit TFTLCD library, the familiar Adafruit GFX library, and the Touchscreen library. All these libraries can be downloaded by following the links below.
With the Libraries installed, we can test the display by trying out the examples which came with the libraries. Two favorite examples are the graphicstext example and the tftbmp example whose demonstration can be seen in the tutorial video.
To explore the Touchscreen functionality of the display, I have developed a sample code, which you can extend for use in any of your projects. it can be downloaded via the download link below.
To use the touchscreen functionality of this display, there is a need for the display to be calibrated. To do this after uploading the code, Open the Serial Monitor and click (touch) on the top left corner of the display and write down the X and Y values displayed on the serial monitor. Then we edit the code to reflect those values. The X value goes to the TS_MAXX variable and the Y value goes to the TS_MAXY variable. We follow the same procedure for the other two variables. We click on the bottom right corner of the display and we enter the values we get in the TS_MINX and TS_MINY variables. With this done our display is now calibrated and ready for use.
Next, we declare the colors to be used with their hexadecimal values after which we create an object of the Adafruit TFTLCD library class indicating the variables used to represent the pins to which the screen is connected on the Arduino.
Next, we draw a white frame on the display then set the cursor to the desired location, change the text color to white, and print the “Hello” text on the screen. By following the same procedure, we display the red YouTube text as well.
With the setup function all done, we move to the loop function, the algorithm in operation for the loop section is simple, each time the user clicks on the screen, we convert the point coordinates of the touch point into pixels using the Map function. After conversion, If that point is inside the red rectangle area, it means that the user has pressed the button, so we disable the button by setting this variable to false and we clear the screen so as to display the “thank you for subscribing” message on the screen.
The ILI9341 TFT module contains a display controller with the same name: ILI9341. It’s a color display that uses SPI interface protocol and requires 4 or 5 control pins, it’s low cost and easy to use.
The resolution of this TFT display is 240 x 320 which means it has 76800 pixels. This module works with 3.3V only and it doesn’t support 5V (not 5V tolerant).
The ILI9341 TFT display board which is shown in project circuit diagram has 14 pins, the first 9 pins are for the display and the other 5 pins are for the touch module.
So, the display part pins are numbered from 1 to 9 (from left to right): VCC (5V), GND (ground), CS (chip select), RST (reset), DC (or D/C: data/command), MOSI (or SDI), SCK (clock), BL (back light LED) and MISO (or SDO).
The first library is a driver for the ILI9341 TFT display which can be installed from Arduino IDE library manager (Sketch —> Include Library —> Manage Libraries …, in the search box write “ili9341” and choose the one from Adafruit).
The ILI9341 TFT display is connected to NodeMCU hardware SPI module pins (clock and data), the other pins which are: CS (chip select), RST (reset) and DC (data/command) are defined as shown below:
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