Increment exercise

OLEDIncrement.ino

#include <Wire.h>    // these are all the libraries we need for working with our screen.
#include <SPI.h>
#include <Adafruit_SSD1306.h>
#include <Adafruit_GFX.h>

#define OLED_RESET 4                  // here we get the screen ready for sending instructions to using the libraries above
Adafruit_SSD1306 display(OLED_RESET); 

int x = 0;  // this is an important new step - here we are making a container called X to put a number in.
//this is a container that can only fit integers inside of it - an integer is a whole number (the ones we count with)
//this container is called a variable. Variables are central to maths and computing.

void setup() {
 
   display.begin(SSD1306_SWITCHCAPVCC, 0x3C);  // tell the Arduino that our little OLED screen is 128 x 64 pixels
    display.clearDisplay(); 
    display.setTextColor(WHITE);
  

}

void loop() {
  display.setCursor(0,0);  // this moves our cursor right back to the top left pixel.. we should talk about this. 
  display.clearDisplay();  // we need to clear our screen ever time we want to draw something new on it - other wise it will just write on top of what was there.  
  display.setTextSize(1);  // this sets the text size for anything below this point - see what happens when you chnage it.
  display.println("Enter via the Polygon Door! Then exit through the window");
  display.println("");
  display.setTextSize(1); // this sets the text size for anyhting below this point - see what happens when you chnage it.
  display.print(x); // this prints the variable that we set at the top to our displays memory.... the container called X that onlyy fits integrers (numbers);
  display.display(); // this prints whats in the displays memory to the screen
  x++;  // this adds one to X every time we run through the 'loop'
  
}