3.2 tft lcd touch sensor screen module for arduino manufacturer

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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.

For this tutorial I composed three examples. The first example is distance measurement using ultrasonic sensor. The output from the sensor, or the distance is printed on the screen and using the touch screen we can select the units, either centimeters or inches.

The next example is controlling an RGB LED using these three RGB sliders. For example if we start to slide the blue slider, the LED will light up in blue and increase the light as we would go to the maximum value. So the sliders can move from 0 to 255 and with their combination we can set any color to the RGB LED,  but just keep in mind that the LED cannot represent the colors that much accurate.

The third example is a game. Actually it’s a replica of the popular Flappy Bird game for smartphones. We can play the game using the push button or even using the touch screen itself.

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.

As the code is a bit longer and for better understanding I will post the source code of the program in sections with description for each section. And at the end of this article I will post the complete source 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.

Next we need to define the fonts that are coming with the libraries and also define some variables needed for the program. In the setup section we need to initiate the screen and the touch, define the pin modes for the connected sensor, the led and the button, and initially call the drawHomeSreen() custom function, which will draw the home screen of the program.

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.

Next is the distance sensor button. First we need to set the color and then using the fillRoundRect() function we will draw the rounded rectangle. Then we will set the color back to white and using the drawRoundRect() function we will draw another rounded rectangle on top of the previous one, but this one will be without a fill so the overall appearance of the button looks like it has a frame. On top of the button we will print the text using the big font and the same background color as the fill of the button. The same procedure goes for the two other buttons.

Now we need to make the buttons functional so that when we press them they would send us to the appropriate example. In the setup section we set the character ‘0’ to the currentPage variable, which will indicate that we are at the home screen. So if that’s true, and if we press on the screen this if statement would become true and using these lines here we will get the X and Y coordinates where the screen has been pressed. If that’s the area that covers the first button we will call the drawDistanceSensor() custom function which will activate the distance sensor example. Also we will set the character ‘1’ to the variable currentPage which will indicate that we are at the first example. The drawFrame() custom function is used for highlighting the button when it’s pressed. The same procedure goes for the two other buttons.

drawDistanceSensor(); // It is called only once, because in the next iteration of the loop, this above if statement will be false so this funtion won"t be called. This function will draw the graphics of the first example.

getDistance(); // Gets distance from the sensor and this function is repeatedly called while we are at the first example in order to print the lasest results from the distance sensor

So the drawDistanceSensor() custom function needs to be called only once when the button is pressed in order to draw all the graphics of this example in similar way as we described for the home screen. However, the getDistance() custom function needs to be called repeatedly in order to print the latest results of the distance measured by the sensor.

Here’s that function which uses the ultrasonic sensor to calculate the distance and print the values with SevenSegNum font in green color, either in centimeters or inches. If you need more details how the ultrasonic sensor works you can check my particular tutorialfor that. Back in the loop section we can see what happens when we press the select unit buttons as well as the back button.

Ok next is the RGB LED Control example. If we press the second button, the drawLedControl() custom function will be called only once for drawing the graphic of that example and the setLedColor() custom function will be repeatedly called. In this function we use the touch screen to set the values of the 3 sliders from 0 to 255. With the if statements we confine the area of each slider and get the X value of the slider. So the values of the X coordinate of each slider are from 38 to 310 pixels and we need to map these values into values from 0 to 255 which will be used as a PWM signal for lighting up the LED. If you need more details how the RGB LED works you can check my particular tutorialfor that. The rest of the code in this custom function is for drawing the sliders. Back in the loop section we only have the back button which also turns off the LED when pressed.

In order the code to work and compile you will have to include an addition “.c” file in the same directory with the Arduino sketch. This file is for the third game example and it’s a bitmap of the bird. For more details how this part of the code work  you can check my particular tutorial. Here you can download that file:

drawDistanceSensor(); // It is called only once, because in the next iteration of the loop, this above if statement will be false so this funtion won"t be called. This function will draw the graphics of the first example.

getDistance(); // Gets distance from the sensor and this function is repeatedly called while we are at the first example in order to print the lasest results from the distance sensor

Thank you for visiting and shopping at Universbuy store. Due to the current COVID 19 situation worldwide, delivery to some countries is suspended. If you do order from an impacted location I will refund your order.

If we are experiencing a high volume of orders, shipments may be delayed by a few days. Please allow additional days in transit for delivery. If there will be a significant delay in shipment of your order, we will contact you via email.

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And touch controlling is available;\u003c\/li\u003e\n\u003cli\u003eCompatibility: As the SD card is connected to SPI pins of ICSP interface, compatible with Arduino UNO R3 \/ Arduino Mega2560 \/ Arduino Leonardo\u003c\/li\u003e\n\u003cli\u003eTouch screen type: resistive touchscreen.\u003c\/li\u003e\n\u003cli\u003eTouch Pen: length is 9cm;\u003c\/li\u003e\n\u003cli\u003eResolution: 240X400;\u003c\/li\u003e\n\u003cli\u003eDisplay size: 3.2 inch;\u003c\/li\u003e\n\u003cli\u003eOperating voltage: 5V;\u003c\/li\u003e\n\u003cli\u003eLogic level: 5V \/ 3.3V;\u003c\/li\u003e\n\u003cli\u003eOn-board 3.3V \/ 300mA regulator circuit;\u003c\/li\u003e\n\u003cli\u003eOperating current: the maximum is 150mA\u003c\/li\u003e\n\u003cli\u003eUse the A0 ~ A3 pins, D4 ~ D13 pins. And I2C interface, D0 \/ D1 \/ D2 \/ D3 is available, please refer to the product schematics for the details.\u003c\/li\u003e\n\u003cli\u003eOnboard Micro SD slot, support Micro SD \/ TF Card;\u003c\/li\u003e\n\u003cli\u003eOnboard LM75 temperature sensor: default I2C address is 0X48, scale is -55 ~ 125"C\u003c\/li\u003e\n\u003cli\u003eVery suitable for digital photo frame, oscilloscope, function generator, detection system monitor\u003c\/li\u003e\n\u003cli\u003eSize: 9*5.3cm\/3.54\"*2.09\"\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cbr\u003e\u003cstrong\u003ePackage Included:\u003c\/strong\u003e\u003cbr\u003e1*Shield\u003cbr\u003e1*Touch pen"}

This module is the 3.2” version of the ESP32 touchscreen display, based on ESP32-WROVER, with a built-in 2M pixel OV2640 camera. The LCD is 320x240 TFT, with driver is ILI9341, it uses SPI for communication with ESP32, the SPI main clock could be up to 60M~80M, make the display smooth enough for videos; and the camera OV2640 with pixel 2M, with this camera, you can make applications such as remote photography, face recognition…

While the camera not used, you can freely use all these pins with the breakout connectors, to connect the ESP32 display with sensors/ actuators, suitable for IoT applications.

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.

The sizes are 0.96” (160×80), 1.13” (240×135), 1.3” ((240×240), 1.33” (128×128), 1.54” (240×240), 1.77” (128×160), 2.0” (240×320), 2.3” (320×240), 2.4” (240×320), 2.8” (240×320), 3.2” (240×320).

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.

Thank you for visiting and shopping at Universbuy store. Due to the current COVID 19 situation worldwide, delivery to some countries is suspended. If you do order from an impacted location I will refund your order.

If we are experiencing a high volume of orders, shipments may be delayed by a few days. Please allow additional days in transit for delivery. If there will be a significant delay in shipment of your order, we will contact you via email.

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systems with the photos show.\u003c\/li\u003e\n\u003cli\u003eWith voltage and current sensor, you can make oscilloscope.\u003c\/li\u003e\n\u003cli\u003eCan use it directly to display characters, graphics and BMP format images. And touch controlling is available;\u003c\/li\u003e\n\u003cli\u003eCompatibility: As the SD card is connected to SPI pins of ICSP interface, compatible with Arduino UNO R3 \/ Arduino Mega2560 \/ Arduino Leonardo\u003c\/li\u003e\n\u003cli\u003eTouch screen type: resistive touchscreen.\u003c\/li\u003e\n\u003cli\u003eTouch Pen: length is 9cm;\u003c\/li\u003e\n\u003cli\u003eResolution: 240X400;\u003c\/li\u003e\n\u003cli\u003eDisplay size: 3.2 inch;\u003c\/li\u003e\n\u003cli\u003eOperating voltage: 5V;\u003c\/li\u003e\n\u003cli\u003eLogic level: 5V \/ 3.3V;\u003c\/li\u003e\n\u003cli\u003eOn-board 3.3V \/ 300mA regulator circuit;\u003c\/li\u003e\n\u003cli\u003eOperating current: the maximum is 150mA\u003c\/li\u003e\n\u003cli\u003eUse the A0 ~ A3 pins, D4 ~ D13 pins. And I2C interface, D0 \/ D1 \/ D2 \/ D3 is available, please refer to the product schematics for the details.\u003c\/li\u003e\n\u003cli\u003eOnboard Micro SD slot, support Micro SD \/ TF Card;\u003c\/li\u003e\n\u003cli\u003eOnboard LM75 temperature sensor: default I2C address is 0X48, scale is -55 ~ 125"C\u003c\/li\u003e\n\u003cli\u003eVery suitable for digital photo frame, oscilloscope, function generator, detection system monitor\u003c\/li\u003e\n\u003cli\u003eSize: 9*5.3cm\/3.54\"*2.09\"\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cbr\u003e\u003cstrong\u003ePackage Included:\u003c\/strong\u003e\u003cbr\u003e1*Shield\u003cbr\u003e1*Touch pen"}

SainSmart 3.2" TFT LCD Displayis a LCD touch screen module. It has 40pins interface and SD card and Flash reader design. It is a powerful and mutilfunctional module for your project.The Screen include a controller SSD1289, it"s a support 8/16bit data interface , easy to drive by many MCU like STM32 ,AVR and 8051. It is designed with a touch controller in it . The touch IC is ADS7843 , and touch interface is included in the 40 pins breakout. It is the version of product only with touch screen and touch controller.

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Most widgets could benefit from a shiny touchscreen interface. Unfortunately, it"s usually not easy to hook up a touchscreen and driving a display is often too taxing on your controller. 4D Systems has solved this problem by creating a series of touchscreens with on-board controllers then combining them with adapters for popular platforms like Raspberry Pi and Arduino!

The Arduino Display Module customizes the uLCD-32-PTU Display specifically for interfacing with the Arduino, to provide a quick and easy interface without any wiring hassles. It enables you to quickly connect the 4D Arduino Adapter Shield to their Arduino, connect the 5 way cable between the Adapter and the Display Module, and be connected in seconds to start programming!

The uLCD-32-PTU-AR has a comprehensive range of serial commands ready to be received from the Arduino, to draw primitives such as lines, rectangles, circles and text, displaying images, playing sound and logging data to uSD card. You can also use the Visi-Genie in Workshop 4 combined with the Arduino Library to create a graphical interface in minutes!

Like the other displays from 4D Systems you will need a USB Serial adapter to program this module. Unfortunately, our FTDI Basic Breakout won"t work. Check the Recommended Items section below for 4D Systems" µUSB-PA5.