OLED屏幕有各种形状和尺寸，但目前有两种非常受欢迎的屏幕尺寸。
1）0.96“
2）1.3“
他们也有2种常见的颜色
1）蓝色
2）白色
驱动OLED的芯片常用的有两种。这两种芯片有许多非常相似的设置命令（在大多数情况下相同），但用于显示信息的命令集是不同的，所以你不能只是改变屏幕 - 你需要更改程序/库来适合相应的芯片！
1）SH1106
2）SSD1306
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Arduino Uno OLED接线
下图显示了如何将Geekcreit 0.96英寸OLED I2C显示器连接到Arduino。用于将OLED显示器连接到Arduino Uno的引脚连接如下。
OLED GND - Arduino GNDOLED VCC - Arduino 5VOLED SCL - Arduino Uno A5OLED SDA - Arduino Uno A4
Arduino MEGA 2560 OLED接线
用于将Arduino MEGA 2560连接到OLED显示器的引脚连接如下。
OLED GND - Arduino GNDOLED VCC - Arduino 5VOLED SCL - Arduino MEGA 2560引脚21OLED SDA - Arduino MEGA 2560引脚20
ESP8266-07 连线方式
VCC-5v
GND-GND
SCL-D1
SDA-D2
esp8266-12f死活不显示
用于SSD1306和图形功能的ArduinoOLEDI²C库
必须安装两个Arduino库才能开始使用显示器。SSD1306驱动程序库用于初始化显示并提供低级显示功能。GFX库提供用于显示文本，绘图线和圆圈等的图形功能。这两个库都可以从Adafruit获得。
安装SSD1306驱动程序库
1手动安装。下载Adafruit_SSD1306库，该库将保存到您的计算机中，名为Adafruit_SSD1306-master.zip。
将Adafruit_SSD1306-master文件夹从下载的压缩文件复制到Arduino库文件夹中。此文件夹通常位于Windows系统上的Documents→Arduino→库中。在Linux上，它通常位于主文件夹→Arduino→库中。
最后在Arduino库文件夹中，将Adafruit_SSD1306-master文件夹重命名为Adafruit_SSD1306。
2自动安装
安装GFX库
下载Adafruit_GFX库，该库保存在您的计算机中，名为Adafruit-GFX-Library-master.zip。
将Adafruit-GFX-Library-master文件夹从下载的压缩文件复制到Arduino库文件夹，如上面的SSD1306驱动程序所做。
在Arduino库文件夹中，将Adafruit-GFX-Library-master文件夹重命名为Adafruit_GFX。
使用
找到显示屏spi的地址，修改成 0x3C(源库代码打开可能是0x3D)
源代码修改
开启 128*64的注释（ESP8266-07使用的是这个正常工作）
关闭源代码 128*32的注释（arduino mega 2560使用的是这个正常工作）
直接烧录
有报错
参看1
mega 2560板子型号选择
ESP8266-07板子型号选择
/**************************************************************************This is an example for our Monochrome OLEDs based on SSD1306 driversPick one up today in the adafruit shop!------> /category/63_98This example is for a 128x32 pixel display using I2C to communicate3 pins are required to interface (two I2C and one reset).Adafruit invests time and resources providing this opensource code, please support Adafruit and open-sourcehardware by purchasing products from Adafruit!Written by Limor Fried/Ladyada for Adafruit Industries,with contributions from the open source community.BSD license, check license.txt for more informationAll text above, and the splash screen below must beincluded in any redistribution.**************************************************************************/#include <SPI.h>#include <Wire.h>#include <Adafruit_GFX.h>#include <Adafruit_SSD1306.h>#define SCREEN_WIDTH 128 // OLED display width, in pixels#define SCREEN_HEIGHT 64 // OLED display height, in pixels// Declaration for an SSD1306 display connected to I2C (SDA, SCL pins)#define OLED_RESET -1 //4 Reset pin # (or -1 if sharing Arduino reset pin)Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);#define NUMFLAKES10 // Number of snowflakes in the animation example#define LOGO_HEIGHT 16#define LOGO_WIDTH 16static const unsigned char PROGMEM logo_bmp[] ={ B00000000, B11000000,B00000001, B11000000,B00000001, B11000000,B00000011, B11100000,B11110011, B11100000,B11111110, B11111000,B01111110, B11111111,B00110011, B10011111,B00011111, B11111100,B00001101, B01110000,B00011011, B10100000,B00111111, B11100000,B00111111, B11110000,B01111100, B11110000,B01110000, B01110000,B00000000, B00110000 };void setup() {Serial.begin(9600);// SSD1306_SWITCHCAPVCC = generate display voltage from 3.3V internallyif(!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) { // Address 0x3D for 128x64Serial.println("SSD1306 allocation failed");for(;;); // Don't proceed, loop forever}Serial.println("success");// Show initial display buffer contents on the screen --// the library initializes this with an Adafruit splash screen.display.display();delay(2000); // Pause for 2 seconds// Clear the bufferdisplay.clearDisplay();// Draw a single pixel in whitedisplay.drawPixel(10, 10, WHITE);// Show the display buffer on the screen. You MUST call display() after// drawing commands to make them visible on screen!display.display();delay(2000);// display.display() is NOT necessary after every single drawing command,// unless that's what you want...rather, you can batch up a bunch of// drawing operations and then update the screen all at once by calling// display.display(). These examples demonstrate both approaches...testdrawline();// Draw many linestestdrawrect();// Draw rectangles (outlines)testfillrect();// Draw rectangles (filled)testdrawcircle(); // Draw circles (outlines)testfillcircle(); // Draw circles (filled)testdrawroundrect(); // Draw rounded rectangles (outlines)testfillroundrect(); // Draw rounded rectangles (filled)testdrawtriangle(); // Draw triangles (outlines)testfilltriangle(); // Draw triangles (filled)testdrawchar();// Draw characters of the default fonttestdrawstyles(); // Draw 'stylized' characterstestscrolltext(); // Draw scrolling texttestdrawbitmap(); // Draw a small bitmap image// Invert and restore display, pausing in-betweendisplay.invertDisplay(true);delay(1000);display.invertDisplay(false);delay(1000);testanimate(logo_bmp, LOGO_WIDTH, LOGO_HEIGHT); // Animate bitmaps}void loop() {}void testdrawline() {int16_t i;display.clearDisplay(); // Clear display bufferfor(i=0; i<display.width(); i+=4) {display.drawLine(0, 0, i, display.height()-1, WHITE);display.display(); // Update screen with each newly-drawn linedelay(1);}for(i=0; i<display.height(); i+=4) {display.drawLine(0, 0, display.width()-1, i, WHITE);display.display();delay(1);}delay(250);display.clearDisplay();for(i=0; i<display.width(); i+=4) {display.drawLine(0, display.height()-1, i, 0, WHITE);display.display();delay(1);}for(i=display.height()-1; i>=0; i-=4) {display.drawLine(0, display.height()-1, display.width()-1, i, WHITE);display.display();delay(1);}delay(250);display.clearDisplay();for(i=display.width()-1; i>=0; i-=4) {display.drawLine(display.width()-1, display.height()-1, i, 0, WHITE);display.display();delay(1);}for(i=display.height()-1; i>=0; i-=4) {display.drawLine(display.width()-1, display.height()-1, 0, i, WHITE);display.display();delay(1);}delay(250);display.clearDisplay();for(i=0; i<display.height(); i+=4) {display.drawLine(display.width()-1, 0, 0, i, WHITE);display.display();delay(1);}for(i=0; i<display.width(); i+=4) {display.drawLine(display.width()-1, 0, i, display.height()-1, WHITE);display.display();delay(1);}delay(2000); // Pause for 2 seconds}void testdrawrect(void) {display.clearDisplay();for(int16_t i=0; i<display.height()/2; i+=2) {display.drawRect(i, i, display.width()-2*i, display.height()-2*i, WHITE);display.display(); // Update screen with each newly-drawn rectangledelay(1);}delay(2000);}void testfillrect(void) {display.clearDisplay();for(int16_t i=0; i<display.height()/2; i+=3) {// The INVERSE color is used so rectangles alternate white/blackdisplay.fillRect(i, i, display.width()-i*2, display.height()-i*2, INVERSE);display.display(); // Update screen with each newly-drawn rectangledelay(1);}delay(2000);}void testdrawcircle(void) {display.clearDisplay();for(int16_t i=0; i<max(display.width(),display.height())/2; i+=2) {display.drawCircle(display.width()/2, display.height()/2, i, WHITE);display.display();delay(1);}delay(2000);}void testfillcircle(void) {display.clearDisplay();for(int16_t i=max(display.width(),display.height())/2; i>0; i-=3) {// The INVERSE color is used so circles alternate white/blackdisplay.fillCircle(display.width() / 2, display.height() / 2, i, INVERSE);display.display(); // Update screen with each newly-drawn circledelay(1);}delay(2000);}void testdrawroundrect(void) {display.clearDisplay();for(int16_t i=0; i<display.height()/2-2; i+=2) {display.drawRoundRect(i, i, display.width()-2*i, display.height()-2*i,display.height()/4, WHITE);display.display();delay(1);}delay(2000);}void testfillroundrect(void) {display.clearDisplay();for(int16_t i=0; i<display.height()/2-2; i+=2) {// The INVERSE color is used so round-rects alternate white/blackdisplay.fillRoundRect(i, i, display.width()-2*i, display.height()-2*i,display.height()/4, INVERSE);display.display();delay(1);}delay(2000);}void testdrawtriangle(void) {display.clearDisplay();for(int16_t i=0; i<max(display.width(),display.height())/2; i+=5) {display.drawTriangle(display.width()/2 , display.height()/2-i,display.width()/2-i, display.height()/2+i,display.width()/2+i, display.height()/2+i, WHITE);display.display();delay(1);}delay(2000);}void testfilltriangle(void) {display.clearDisplay();for(int16_t i=max(display.width(),display.height())/2; i>0; i-=5) {// The INVERSE color is used so triangles alternate white/blackdisplay.fillTriangle(display.width()/2 , display.height()/2-i,display.width()/2-i, display.height()/2+i,display.width()/2+i, display.height()/2+i, INVERSE);display.display();delay(1);}delay(2000);}void testdrawchar(void) {display.clearDisplay();display.setTextSize(1);// Normal 1:1 pixel scaledisplay.setTextColor(WHITE); // Draw white textdisplay.setCursor(0, 0);// Start at top-left cornerdisplay.cp437(true); // Use full 256 char 'Code Page 437' font// Not all the characters will fit on the display. This is normal.// Library will draw what it can and the rest will be clipped.for(int16_t i=0; i<256; i++) {if(i == '\n') display.write(' ');elsedisplay.write(i);}display.display();delay(2000);}void testdrawstyles(void) {display.clearDisplay();display.setTextSize(1); // Normal 1:1 pixel scaledisplay.setTextColor(WHITE); // Draw white textdisplay.setCursor(0,0); // Start at top-left cornerdisplay.println(F("Hello, world!"));display.setTextColor(BLACK, WHITE); // Draw 'inverse' textdisplay.println(3.141592);display.setTextSize(2); // Draw 2X-scale textdisplay.setTextColor(WHITE);display.print(F("0x")); display.println(0xDEADBEEF, HEX);display.display();delay(2000);}void testscrolltext(void) {display.clearDisplay();display.setTextSize(2); // Draw 2X-scale textdisplay.setTextColor(WHITE);display.setCursor(10, 0);display.println(F("scroll"));display.display();// Show initial textdelay(100);// Scroll in various directions, pausing in-between:display.startscrollright(0x00, 0x0F);delay(2000);display.stopscroll();delay(1000);display.startscrollleft(0x00, 0x0F);delay(2000);display.stopscroll();delay(1000);display.startscrolldiagright(0x00, 0x07);delay(2000);display.startscrolldiagleft(0x00, 0x07);delay(2000);display.stopscroll();delay(1000);}void testdrawbitmap(void) {display.clearDisplay();display.drawBitmap((display.width() - LOGO_WIDTH ) / 2,(display.height() - LOGO_HEIGHT) / 2,logo_bmp, LOGO_WIDTH, LOGO_HEIGHT, 1);display.display();delay(1000);}#define XPOS 0 // Indexes into the 'icons' array in function below#define YPOS 1#define DELTAY 2void testanimate(const uint8_t *bitmap, uint8_t w, uint8_t h) {int8_t f, icons[NUMFLAKES][3];// Initialize 'snowflake' positionsfor(f=0; f< NUMFLAKES; f++) {icons[f][XPOS] = random(1 - LOGO_WIDTH, display.width());icons[f][YPOS] = -LOGO_HEIGHT;icons[f][DELTAY] = random(1, 6);Serial.print(F("x: "));Serial.print(icons[f][XPOS], DEC);Serial.print(F(" y: "));Serial.print(icons[f][YPOS], DEC);Serial.print(F(" dy: "));Serial.println(icons[f][DELTAY], DEC);}for(;;) { // Loop forever...display.clearDisplay(); // Clear the display buffer// Draw each snowflake:for(f=0; f< NUMFLAKES; f++) {display.drawBitmap(icons[f][XPOS], icons[f][YPOS], bitmap, w, h, WHITE);}display.display(); // Show the display buffer on the screendelay(200); // Pause for 1/10 second// Then update coordinates of each flake...for(f=0; f< NUMFLAKES; f++) {icons[f][YPOS] += icons[f][DELTAY];// If snowflake is off the bottom of the screen...if (icons[f][YPOS] >= display.height()) {// Reinitialize to a random position, just off the topicons[f][XPOS] = random(1 - LOGO_WIDTH, display.width());icons[f][YPOS] = -LOGO_HEIGHT;icons[f][DELTAY] = random(1, 6);}}}}
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