Arduino Touch Screen Calculator Project with Code Arduino Touch Screen Calculator Project with Code

Tft color lcd arduino hookup, your answer

8” TFT LCD hook up to Arduino MEGA

If radius times 2 is greater than the width or height: The rest of the code in this custom function is for drawing the sliders. Graphics Functions Draws a single pixel at x,y in the indicated color.

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Click the input box and a popup will show a color picker. Color red, green, blue ; This function calculates the bit color code, based on the 3 values red, green and blue all 3 are 8 bit numbers.

Next we need to define the fonts that are coming with the libraries and also define some variables karen witter dating for the program. I would appreciate your support in this way! The size is an arbitrary number and does not match for example pixel height or anything like that.

Touch Screen TFT Shield for Arduino Uno

Screen Functions setRotation rotation ; This function is used to indicate what corner of your display is considered 0,0which in essence rotates the coordinate system 0, 90, tft color lcd arduino hookup degrees.

The SainSmart display uses 0,0 as the upper left corner when the display is standing up right i. Here you can download that file: With the setBackColor function we need to set the background color of the text, black one in our case. 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.

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Color 0xB7, 0x00, 0xFE ; Note: 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 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.

Typically fontsize values are 1,2,3,4,5,6,7,8,9,10, etc. 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.

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If you need more details how the ultrasonic sensor works you can check my particular tutorial for that. Source 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.

The radius indicates the radius of the individual corners. Here I would like to say thanks to him for the incredible work he has done. In this function we use the touch screen to set the values of the 3 sliders from 0 to We will use the GND pin, the digital pins from 8 to 13, as well as the pin number The println variant will add a carriage return, so that the next text output starts on a new line.

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The bitmap upper left corner is x,ypresumed to have a width and height as indicated, and will be drawn in the indicated color.

Next is the distance sensor button. This function will draw the graphics of the first example. This is where the text output continues when using print or println.

First we need to set the color and then using the fillRoundRect function we will draw the rounded rectangle.

SainSmart 8″ Color TFT LCD Display for Arduino

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.

So the values of the X coordinate of each slider are from 38 to pixels and we need to map these values into values from 0 to which will be used as a PWM signal for lighting up the LED.

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This function works faster for vertical lines when compare to drawLine. Next we will set the color to red and draw the red line below the text. Back in the loop section we only have the back button which also turns off the LED when pressed.

Back in the loop section we can see what happens when we press the select unit buttons as well as the back button.

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The hex values are: The use of this function is a little beyond the scope of this article, but I just wanted to show that there is more depth to these libraries. This function works faster for horizontal lines when compare to drawLine. Choose your color, and the hex value will appear.

However, when you enter the number here straight, use hexadecimal numbers, as with decimal numbers you will get unexpected results, for example: You can of course, use any application for color picking that shows hex values, or for example the color picker in Adobe Photoshop.

The same procedure goes for the two other buttons. Either download the file or just copy the code and paste it into an empty Arduino Sketch.

Tutorial – Arduino and Color LCD

Your Color call will be: You can pass variables intor enter numbers straight. You can download these libraries from his website, RinkyDinkElectronics. Color 0xFF, 0, 0 Green: See the demo below for an example output. To use this in your Arduino Sketch: Text Functions drawChar x, y, character, color, backgroundcolor, fontsize ; Draws a character at a given location x,ywhere x,y represents the upper left corner of the character.