Touch Screen Calculator using TFT LCD with 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.
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.
Note: It is very important for you to install this library in your Arduino IDE or this program to compile without any error.
To install this library, you can simply click on the link above which will take you to a GitHub page. There click on clone or download and select “Download ZIP”. A zip file will be downloaded.
Now, open Arduino IDE and select Sketch - Include Library - 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.
Touch Screen Calculator using TFT LCD with Arduino
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