ks0136 keyestudio EASY plug OLED module
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Introduction

OLED is short for organic light emitting diode. On the microscopic level, an OLED display is a matrix of organic LEDs that light up when they emit energy. Old LCD (Liquid Crystal Display) technology uses electronically controlled polarizers to change the way light passes or does not pass through them. This requires an external backlight that lights up the whole display underneath. This uses a lot of energy because at the time the display is on, enough light for all pixels must be provided. The new OLED technology only uses electricity per pixel. Because each pixel creates its own light, only the pixels that are on use electricity. This makes OLED technology very efficient; also, the way these types of OLEDs are built allows them to be very thin compared to LCD.

Note: this module needs to be used together with EASY plug control board.

Specification

Interface: Easy-plug

Communication protocol: I2C

Number of Pixels: 128 × 64

Color Depth: Monochrome (White)

Brightness ( cd/m2): 100 (Typ) @ 12V

Size: 38.85*27mm

Weight: 20g

Connection Diagram

This module carries I2C interface, so we need to comply with I2C protocol in usage and corresponding head files must be included and added into the library.


Below is the connection diagram between this module and Easy-plug controller:


Sample Code

#include <SPI.h>

#include <Wire.h>

#include <Adafruit_GFX.h>

#include <Adafruit_SSD1306.h>


#define OLED_RESET 4

Adafruit_SSD1306 display(OLED_RESET);


void setup() {


// by default, we'll generate the high voltage from the 3.3v line internally! (neat!)

display.begin(SSD1306_SWITCHCAPVCC, 0x3C); // initialize with the I2C addr 0x3D (for the 128x64)

// init done


// Show image buffer on the display hardware.

// Since the buffer is intialized with an Adafruit splashscreen

// internally, this will display the splashscreen.

display.display();

delay(2000);


// Clear the buffer.

display.clearDisplay();

}


void loop() {


display.clearDisplay();

display.setTextSize(1);

display.setTextColor(WHITE);

display.setCursor(0,0);

display.println("Hello,world!");

display.println("Hello,keyestudio!");

display.setTextSize(2);

display.println("Hello!");

display.println("keyes!");

display.println("keyestudio");

display.display();

delay(250);

}

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