sainsmart tft lcd screen kit price

This is Sainsmart Due + 7 inch TFT LCD module with the TFT LCD shield kit For arduino enthusiasts.This kit helps you to avoid complicated wiring processes and save you much time to accomplish your goal.

The SainSmart Due is a microcontroller board based on the Atmel SAM3X8E ARM Cortex-M3 CPU .It is the first Arduino board based on a 32-bit ARM core microcontroller. It has 54 digital input/output pins (of which 12 can be used as PWM outputs), 12 analog inputs, 4 UARTs (hardware serial ports), a 84 MHz clock, an USB OTG capable connection, 2 DAC (digital to analog), 2 TWI, a power jack, an SPI header, a JTAG header, a reset button and an erase button.

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 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.

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.

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.

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.

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.

Trade_Spotting is a well-known online brand specialized on development board and professional test equipments. As a professional and reliable seller, we source from SainSmart’s manufactory directly before testing and packing.

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Has anyone used the SainSmart 4.3" TFT LCD Touch Screen display? I purchased one a while ago and have been unable to get it to work at all on my UNO R3. I repeatedly requested help from SainSmart , but the E-Mail thing just didn"t work. They kept giving the same answers and I kept getting the same results "NOTHING". So if anyone has any ideas I would greatly appreciate them. Let me know what further info you need as I am lost on this and pretty much in the dark. Not even sure what libraries are required. thanks.

Those using the single board computer, the Raspberry Pi (RBPi), can now get several high-resolution LCD screen models on the market. While they are cheap, some are designed to integrate with the RBPi specifically. SunFounder, a company specializing in accessories and kits for RBPi and Arduinos, produce a series of these screens. For satisfying different segments in the market, SunFounder has lately produced and is marketing a number of models with varying price ranges.

With a resolution of 1280×800, this high definition LCD is a true gem for RBPi fans. The screen has appropriate screw supports for use as a desktop screen. If you remove the supports, the screen can be used in any other context as well. The rear of the screen has a compartment with an electronic screen presenting input connectors in other formats such as VGA and AV, including HDMI. The back also has provision for mounting the RBPi and fixing it with screws. As the networking sockets and USB ports of the RBPi remain at the edge of the screen, cable connections are not hindered.

This high quality display has low weight and is highly adaptable to other purposes. That means you can screw it on different types of support, for which it has adequate arrangements. The viewing angle is also very good, and one is not forced to look at the upper front of the screen to be able to work with this model.

Significantly cheaper than its 10” elder brother, this 1024×600 TFT LCD is very compact and has convenient dimensions. However, it has a smaller viewing angle, considering this is purely a desktop model. Apart from HDMI, the LCD accepts inputs such as VGA, AV1, and AV2.

Technically identical to the SunFounder 7”, this LCD is equipped with a touch screen. As this is somewhat cheaper, the 1024×600 Kuman TFT LCD is more economical. However, it is slightly heavier than its rival is. It accepts HDMI, VGA, and AV inputs.

If you are looking for something still cheaper, and able to sacrifice some resolution, the SainSmart model should appeal to you. At a resolution of 800×480, this TFT LCD also includes a touch screen. However, this is not a desktop model, and you must arrange for a suitable housing. Weighing considerably lower than the others do, it accepts inputs in the form of HDMI, VGA, AV1, and AV2.

Although officially released by the Raspberry Foundation, this 800×400 LCD model is comparatively expensive. However, it comes with a touch screen and has a video shield for the RBPi boards. The case housing must be purchased separately, which adds to the cost.

If you are looking for a model you can assemble, this 800×480 model from Kuman makes that possible. This is the same as the other Kuman model, but less expensive. Additionally, it has a touch screen and a remote control. It accepts input formats such as HDMI, VGA, and AV.

First you have to find a power supply with a 5.5mm plug. I found a 5v 2.5a adapter from my dlink router. You only need 5v 1a to power the display. Just plug that into the lcd driver board (board with hdmi port on it). Next you need to connect the lcd to the driver board. Find the ttl port (it says TTL OUT in front of it) and push out the two grey hinge things. Connect the lcd ttl cable (big one) into the driver board and then push the grey hinge things in. Finally connect the RPI to the screen via HDMI or composite. I am working on getting the drivers for the touchscreen installed and I will get back when I figure that out.