PM2.5檢測/Arduino UNO R3/PMS5003T/OLED 0.96"

PM2.5檢測/Arduino UNO R3/PMS5003T/OLED 0.96"

這款PM2.5感測器，又多了溫濕度的功能，所以一併把感測資料顯示出來

感測器接腳如下：

SDA 接 A4     SCL 接 A5

這種 OLED，假設線接錯，開機時是完全沒畫面，千萬不要以為壞了，壞了，壞了
請再次檢查線路。

有用擴充板，因為手指較粗，眼睛又老花眼，接個擴充板才不會插錯洞。

不用也可以，請自行對照正確的接腳接上。

完成後如下圖：

還缺少一樣東西，不然顯示不出來。

為了簡化程式，

所以把除錯的程式碼去掉了~

#define OLED_EN

#if defined (OLED_EN)

#include "U8glib.h"

U8GLIB_SH1106_128X64 u8g(U8G_I2C_OPT_NO_ACK);

#endif

#include <SoftwareSerial.h>

SoftwareSerial mySerial(2, 3);

#define PMS_SET 4   

#if defined (OLED_EN)

 long pmat10=0;

 long pmat25=0;

 long pmat100=0;

 long pmt=0;

 long pmh=0;

 char buf[50];

 int sensorVal;

#endif

void draw() {

   u8g.setFont(u8g_font_8x13);

   u8g.drawStr(0, 10, "T=");

   u8g.setPrintPos(17, 10);

   u8g.print(int(pmt));

   u8g.drawStr(33, 10, "(C)");

   u8g.drawStr(60 ,10, "H=");

   u8g.setPrintPos(78, 10);

   u8g.print(int(pmh));

   u8g.drawStr(103, 10, "(%)");

   u8g.drawStr(0,25, "PM2.5=");

   u8g.setFont(u8g_font_fub25);

   u8g.setPrintPos(50, 40);

   u8g.print(int(pmat25));

   u8g.setFont(u8g_font_profont12);

   u8g.drawStr(0, 64, "PM1=");

   u8g.setPrintPos(25, 64);

   u8g.print(int(pmat10));    

   u8g.drawStr(60, 64, "PM10=");

   u8g.setPrintPos(92, 64);

   u8g.print(int(pmat100));

   u8g.setFont(u8g_font_5x8);

   u8g.drawStr(85, 52, "(ug/m3)");

}

void ecoMode(){

   sensorVal = digitalRead(PMS_SET);

 if (sensorVal == LOW){  

   delay(30000);

   digitalWrite(PMS_SET, HIGH);

    delay(30000);  

     }

 else if (sensorVal == HIGH){

    digitalWrite(PMS_SET, HIGH);

 }    

}   

void retrievepm25(){

 int count = 0;

 unsigned char c;

 unsigned char high;

 while (mySerial.available()) {

   c = mySerial.read();

   if((count==0 && c!=0x42) || (count==1 && c!=0x4d)){

     break;

   }

   if(count > 27){

     break;

   }

    else if(count == 10 || count == 12 || count == 14 || count == 24 || count == 26) {

     high = c;

   }

   else if(count == 11){

     pmat10 = 256*high + c;

   }

   else if(count == 13){

     pmat25 = 256*high + c;

   }

   else if(count == 15){

     pmat100 = 256*high + c;

   }

    else if(count == 25){        

     pmt = (256*high + c)/10;

   }

   else if(count == 27){            

     pmh = (256*high + c)/10;

   }   

   count++;

 }

 while(mySerial.available()) mySerial.read();

}

void decidePM25(){

 if(pmat25 >= 40){   

    u8g.firstPage();

    do {

     draw();

     u8g.setFont(u8g_font_5x8);

     u8g.drawStr(0, 52, "(Normal Mode)");     

     } while( u8g.nextPage() );

   digitalWrite(PMS_SET, HIGH);

   sensorVal = digitalRead(PMS_SET);

   delay(2000);

 }

 else {

    u8g.firstPage();

    do {

     draw();

     u8g.setFont(u8g_font_5x8);

     u8g.drawStr(0, 52, "(Economic Mode)");     

     } while( u8g.nextPage() );

   delay(500);

   digitalWrite(PMS_SET, LOW);

   sensorVal = digitalRead(PMS_SET);

 }   

   ecoMode();  

     }

void setup() {

 mySerial.begin(9600);

 pinMode(PMS_SET, OUTPUT);

 digitalWrite(PMS_SET, HIGH);

 for (int i = 0; i < 15; i++) {

   retrievepm25();

   u8g.firstPage();  

   do {

     draw();

     u8g.setFont(u8g_font_5x8);

     u8g.drawStr(0, 52, "(Normal)");

     } while( u8g.nextPage() );

 }

   delay(2000);

}

void loop() {

 retrievepm25();

 u8g.firstPage();  

   do {

     draw();

   } while( u8g.nextPage() );

  decidePM25();

}