这代码一般都是复制过来，在小改下就行了
代码如下：
#include#include #include #include #include #define OLED_RESET 4 Adafruit_SSD1306 display(OLED_RESET); #define LOGO16_GLCD_HEIGHT 16 //定义显示高度 #define LOGO16_GLCD_WIDTH 16 //定义显示宽度 int measurePin = 0; //Connect dust sensor to Arduino A0 pinint ledPower = 2; //Connect 3 led driver pins of dust sensor to Arduino D2int samplingTime = 280;int deltaTime = 40;int sleepTime = 9680;int dustVal=0;int i=0;float ppm=0;char s[32];float voltage=0;float dustdensity=0;float ppmpercf=0;void setup(){ Serial.begin(9600); pinMode(ledPower,OUTPUT); // 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 i=0; ppm=0; display.clearDisplay(); }void loop(){ i=i+1; digitalWrite(ledPower,LOW); // power on the LED delayMicroseconds(samplingTime); dustVal = analogRead(measurePin); // read the dust value ppm=ppm+dustVal; delayMicroseconds(deltaTime); digitalWrite(ledPower,HIGH); // turn the LED off delayMicroseconds(sleepTime); voltage=ppm/i*0.0049; dustdensity=0.17*voltage-0.1; ppmpercf=(voltage-0.0256)*120000; if(ppmpercf<0) ppmpercf=0; if(dustdensity<0) dustdensity=0; if(dustdensity>0.5) dustdensity=0.5; String dataString=""; dataString+=dtostrf(voltage,9,4,s); dataString+="PM2.5 ---> "; dustdensity = dustdensity*1000; dataString+=dtostrf(dustdensity,5,2,s); dataString+=" -----> "; dataString+=dtostrf(ppmpercf,8,0,s); i=0; ppm=0; Serial.println(dustdensity); Serial.println(dataString); display.clearDisplay(); display.setCursor(0,0); display.setTextSize(1); //设置字体大小 display.setTextColor(WHITE); //设置字体白色 display.print("dustDensity:"); display.print(dataString); //输出字符 display.display(); //显示以上 delay(1000);}
模块：
OLED12864显示屏:
模块针脚 Arduino针脚
VCC ----> 3.3V
GND ----> GND
SCL ----> A5
SDA ----> A4
夏普灰尘传感器GP2Y10：
