02-G5+nodeMCU

(2017/12/31)

比照之前G3+nodeMCU，再來做一次G5+NodeMCU，G5也就是PMS5003ST攀藤測PM2.5的感測器，可以偵測PM2.5、甲醛及溫濕度的值。

一、NodeMCU+G5+LCD顯示器：

接線說明：
- 一個nodeMCU+擴展板、一個LCD顯示器(SDA接D2、SCL接D1)、一個G5(pin5(Tx)接Rx)

- LCD要接5V的電，不然電太弱會看不清楚

- - - 從下面這資料，好像用大氣環境下的為主
    - 首先，它可以採樣測定的空氣懸浮微粒有三種規格 0.3-1.0um/1.0-2.5um/2.5-10um，也就是說我們可以拿到 PM1.0/PM2.5/PM10 的測定資料(ug/m3)。而且PMS3003 的 datasheet 寫到他有兩套檢定空氣品質濃度的方法，分別是可以獲得「大氣環境下」和「標準顆粒物」兩組資料值，所以程式裡面每一次從 sensor 那邊得到的資料就會有２組，６個測定值。這裡我會在意的是「大氣環境下」測得的這組，所以，以下顯示的是大氣環境下這組的數據。

- 利用下面程式可以得到PM1.0、PM2.5、PM10分別在CF=1為標準顆粒物、atmosphere為大氣環境下
  - - CF=1 根据美国TSI公司的仪器校准
    - 大气环境下根据中国气象局的数据校准

程式說明：
- G5程式採上一單元參考一的程式，LCD程式採用TUNIOT的程式，以下紅色字的部分(參考01TUNIOT入門課程)
- 進入TUNIOT網站：http://easycoding.tn/tuniot/demos/code/
- #include <Wire.h>
- #include <LiquidCrystal_I2C.h>
  - LiquidCrystal_I2C lcd(0x27,16,2); //注意是0x27或0x3F
  - static unsigned int pm_cf_10; //定义全局变量
  - static unsigned int pm_cf_25;
  - static unsigned int pm_cf_100;
  - static unsigned int pm_at_10;
  - static unsigned int pm_at_25;
  - static unsigned int pm_at_100;
  - static unsigned int particulate03;
  - static unsigned int particulate05;
  - static unsigned int particulate10;
  - static unsigned int particulate25;
  - static unsigned int particulate50;
  - static unsigned int particulate100;
  - static float HCHO;
  - static float Temperature;
  - static float Humidity;
  - void getG5(unsigned char ucData)//获取G5的值
  - {
  - static unsigned int ucRxBuffer[250];
  - static unsigned int ucRxCnt = 0;
  - ucRxBuffer[ucRxCnt++] = ucData;
  - if (ucRxBuffer[0] != 0x42 && ucRxBuffer[1] != 0x4D)//数据头判断
  - {
  - ucRxCnt = 0;
  - return;
  - }
  - if (ucRxCnt > 38)//数据位判断//G5S为32，G5ST为38
  - {
  - pm_cf_10=(int)ucRxBuffer[4] * 256 + (int)ucRxBuffer[5]; //大气环境下PM2.5浓度计算
  - pm_cf_25=(int)ucRxBuffer[6] * 256 + (int)ucRxBuffer[7];
  - pm_cf_100=(int)ucRxBuffer[8] * 256 + (int)ucRxBuffer[9];
  - pm_at_10=(int)ucRxBuffer[10] * 256 + (int)ucRxBuffer[11];
  - pm_at_25=(int)ucRxBuffer[12] * 256 + (int)ucRxBuffer[13];
  - pm_at_100=(int)ucRxBuffer[14] * 256 + (int)ucRxBuffer[15];
  - particulate03=(int)ucRxBuffer[16] * 256 + (int)ucRxBuffer[17];
  - particulate05=(int)ucRxBuffer[18] * 256 + (int)ucRxBuffer[19];
  - particulate10=(int)ucRxBuffer[20] * 256 + (int)ucRxBuffer[21];
  - particulate25=(int)ucRxBuffer[22] * 256 + (int)ucRxBuffer[23];
  - particulate50=(int)ucRxBuffer[24] * 256 + (int)ucRxBuffer[25];
  - particulate100=(int)ucRxBuffer[26] * 256 + (int)ucRxBuffer[27];
  - HCHO=((int)ucRxBuffer[28] * 256 +(int)ucRxBuffer[29])/1000.000;
  - Temperature = ((int)ucRxBuffer[30] * 256 +(int)ucRxBuffer[31])/10.000;//包含温度
  - Humidity = ((int)ucRxBuffer[32] * 256 +(int)ucRxBuffer[33])/10.000;//包含湿度
  - if (pm_cf_25 > 999)//如果PM2.5数值>1000，返回重新计算
  - {
  - ucRxCnt = 0;
  - return;
  - }
  - ucRxCnt = 0;
  - return;
  - }
  - }
  - void setup() {
  - Serial.begin(9600);
  - lcd.begin();
  - }
  - void loop() {
  - while (Serial.available())
  - {
  - getG5(Serial.read());
  - }
  - Serial.print(" PM_CF1.0:");Serial.print(pm_cf_10);Serial.print(" ug/m3");//硬件串口输出数据
  - Serial.print(" PM_CF2.5:");Serial.print(pm_cf_25);Serial.print(" ug/m3");
  - Serial.print(" PM_CF10 :");Serial.print(pm_cf_100);Serial.println(" ug/m3");
  - Serial.print(" PM_AQI1.0:");Serial.print(pm_at_10);Serial.print(" ug/m3");
  - Serial.print(" PM_AQI2.5:");Serial.print(pm_at_25);Serial.print(" ug/m3");
  - Serial.print(" PM_AQI10:");Serial.print(pm_at_100);Serial.println(" ug/m3");
  - Serial.print(" PM_count03:");Serial.print(particulate03);Serial.print(" pcs/0.01cf");
  - Serial.print(" PM_count05:");Serial.print(particulate05);Serial.print(" pcs/0.01cf");
  - Serial.print(" PM_count10:");Serial.print(particulate10);Serial.print(" pcs/0.01cf");
  - Serial.print(" PM_count25:");Serial.print(particulate25);Serial.print(" pcs/0.01cf");
  - Serial.print(" PM_count100:");Serial.print(particulate100);Serial.println(" pcs/0.01cf");
  - Serial.print(" HCHO:");Serial.print(HCHO,3);Serial.println(" mg/m3");
  - Serial.print(" TS:");Serial.print(Temperature,1);Serial.println(" C"); //包含温度
  - Serial.print(" HS:");Serial.print(Humidity,1);Serial.println(" %RH"); //包含湿度
  - Serial.println("*********************************************");
- lcd.setCursor(0, 0);
- lcd.print(String("At")+pm_at_10 + String(",")+pm_at_25 + String(",")+pm_at_100+String("F:")+HCHO );
- lcd.setCursor(0, 1);
- lcd.print( String(" T:")+Temperature + String(" H:")+Humidity );
  - delay(2000);
  - }

二、NodeMCU+G5+OLED顯示器：

接線說明：
- 一個nodeMCU+擴展板、一個OLED顯示器(SDA接D2、SCL接D1)、一個G5(pin5(Tx)接Rx)
- OLED接3.3V的電，即可

程式說明：
- G5程式採上一單元參考一的程式，OLED程式採用TUNIOT的程式，以下紅色字的部分(參考01TUNIOT入門課程)
- 進入TUNIOT網站：http://easycoding.tn/tuniot/demos/code/
- #include <Wire.h>
- #include "SSD1306.h"
- SSD1306 display(0x3C, 4, 5);
  - static unsigned int pm_cf_10; //定义全局变量
  - static unsigned int pm_cf_25;
  - static unsigned int pm_cf_100;
  - static unsigned int pm_at_10;
  - static unsigned int pm_at_25;
  - static unsigned int pm_at_100;
  - static unsigned int particulate03;
  - static unsigned int particulate05;
  - static unsigned int particulate10;
  - static unsigned int particulate25;
  - static unsigned int particulate50;
  - static unsigned int particulate100;
  - static float HCHO;
  - static float Temperature;
  - static float Humidity;
  - void getG5(unsigned char ucData)//获取G5的值
  - {
  - static unsigned int ucRxBuffer[250];
  - static unsigned int ucRxCnt = 0;
  - ucRxBuffer[ucRxCnt++] = ucData;
  - if (ucRxBuffer[0] != 0x42 && ucRxBuffer[1] != 0x4D)//数据头判断
  - {
  - ucRxCnt = 0;
  - return;
  - }
  - if (ucRxCnt > 38)//数据位判断//G5S为32，G5ST为38
  - {
  - pm_cf_10=(int)ucRxBuffer[4] * 256 + (int)ucRxBuffer[5]; //大气环境下PM2.5浓度计算
  - pm_cf_25=(int)ucRxBuffer[6] * 256 + (int)ucRxBuffer[7];
  - pm_cf_100=(int)ucRxBuffer[8] * 256 + (int)ucRxBuffer[9];
  - pm_at_10=(int)ucRxBuffer[10] * 256 + (int)ucRxBuffer[11];
  - pm_at_25=(int)ucRxBuffer[12] * 256 + (int)ucRxBuffer[13];
  - pm_at_100=(int)ucRxBuffer[14] * 256 + (int)ucRxBuffer[15];
  - particulate03=(int)ucRxBuffer[16] * 256 + (int)ucRxBuffer[17];
  - particulate05=(int)ucRxBuffer[18] * 256 + (int)ucRxBuffer[19];
  - particulate10=(int)ucRxBuffer[20] * 256 + (int)ucRxBuffer[21];
  - particulate25=(int)ucRxBuffer[22] * 256 + (int)ucRxBuffer[23];
  - particulate50=(int)ucRxBuffer[24] * 256 + (int)ucRxBuffer[25];
  - particulate100=(int)ucRxBuffer[26] * 256 + (int)ucRxBuffer[27];
  - HCHO=((int)ucRxBuffer[28] * 256 +(int)ucRxBuffer[29])/1000.000;
  - Temperature = ((int)ucRxBuffer[30] * 256 +(int)ucRxBuffer[31])/10.000;//包含温度
  - Humidity = ((int)ucRxBuffer[32] * 256 +(int)ucRxBuffer[33])/10.000;//包含湿度
  - if (pm_cf_25 > 999)//如果PM2.5数值>1000，返回重新计算
  - {
  - ucRxCnt = 0;
  - return;
  - }
  - ucRxCnt = 0;
  - return;
  - }
  - }
  - void setup() {
  - Serial.begin(9600);
- display.init();
  - }
  - void loop() {
  - while (Serial.available())
  - {
  - getG5(Serial.read());
  - }
  - Serial.print(" PM_CF1.0:");Serial.print(pm_cf_10);Serial.print(" ug/m3");//硬件串口输出数据
  - Serial.print(" PM_CF2.5:");Serial.print(pm_cf_25);Serial.print(" ug/m3");
  - Serial.print(" PM_CF10 :");Serial.print(pm_cf_100);Serial.println(" ug/m3");
  - Serial.print(" PM_AQI1.0:");Serial.print(pm_at_10);Serial.print(" ug/m3");
  - Serial.print(" PM_AQI2.5:");Serial.print(pm_at_25);Serial.print(" ug/m3");
  - Serial.print(" PM_AQI10:");Serial.print(pm_at_100);Serial.println(" ug/m3");
  - Serial.print(" PM_count03:");Serial.print(particulate03);Serial.print(" pcs/0.01cf");
  - Serial.print(" PM_count05:");Serial.print(particulate05);Serial.print(" pcs/0.01cf");
  - Serial.print(" PM_count10:");Serial.print(particulate10);Serial.print(" pcs/0.01cf");
  - Serial.print(" PM_count25:");Serial.print(particulate25);Serial.print(" pcs/0.01cf");
  - Serial.print(" PM_count100:");Serial.print(particulate100);Serial.println(" pcs/0.01cf");
  - Serial.print(" HCHO:");Serial.print(HCHO,3);Serial.println(" mg/m3");
  - Serial.print(" TS:");Serial.print(Temperature,1);Serial.println(" C"); //包含温度
  - Serial.print(" HS:");Serial.print(Humidity,1);Serial.println(" %RH"); //包含湿度
  - Serial.println("*********************************************");
- display.clear();
- display.setTextAlignment(TEXT_ALIGN_LEFT);
- display.setFont(ArialMT_Plain_16);
- display.drawString(0, 0, String("At")+pm_at_10 + String(",")+pm_at_25 + String(",")+pm_at_100);
- display.display();
- display.setTextAlignment(TEXT_ALIGN_LEFT);
- display.setFont(ArialMT_Plain_16);
- display.drawString(0, 16, String("F:")+HCHO);
- display.display();
- display.setTextAlignment(TEXT_ALIGN_LEFT);
- display.setFont(ArialMT_Plain_16);
- display.drawString(0, 32, String(" T:")+Temperature + String(" H:")+Humidity);
- display.display();
  - delay(2000);
  - }
經過一夜房間的數據與小米清淨機的比較，但不知兩者間有沒有關係？

三.加入上網功能，並將PM2.5相關數據上傳到thingspeak

接線說明：同NodeMCU+G5+OLED顯示器
上網程式請參考02TUNIOT網路應用課程及02-G3+NodeMCU
Thingspeak網站(https://thingspeak.com/)，Thingspeak的使用，請參考 01DHT11溫濕度

本例是將大氣環境下的pm1.0、pm2.5、pm10及甲醛、溫濕度的值(共6個field)，上傳到Thingspeak去
進入TUNIOT網站：http://easycoding.tn/tuniot/demos/code/

- 轉為Arduino語言，並修改程式內容
  - - #include <Wire.h>
    - #include "SSD1306.h"
    - SSD1306 display(0x3C, 4, 5);
    - #include <ESP8266WiFi.h>
    - #include <ESP8266HTTPClient.h>
    - WiFiClient client;
    - String thingSpeakAddress= "http://api.thingspeak.com/update?";
    - String writeAPIKey;
    - String tsfield1Name;
    - String request_string;
    - HTTPClient http;
      - static unsigned int pm_cf_10; //定义全局变量
      - static unsigned int pm_cf_25;
      - static unsigned int pm_cf_100;
      - static unsigned int pm_at_10;
      - static unsigned int pm_at_25;
      - static unsigned int pm_at_100;
      - static unsigned int particulate03;
      - static unsigned int particulate05;
      - static unsigned int particulate10;
      - static unsigned int particulate25;
      - static unsigned int particulate50;
      - static unsigned int particulate100;
      - static float HCHO;
      - static float Temperature;
      - static float Humidity;
      - void getG5(unsigned char ucData)//获取G5的值
      - {
      - static unsigned int ucRxBuffer[250];
      - static unsigned int ucRxCnt = 0;
      - ucRxBuffer[ucRxCnt++] = ucData;
      - if (ucRxBuffer[0] != 0x42 && ucRxBuffer[1] != 0x4D)//数据头判断
      - {
      - ucRxCnt = 0;
      - return;
      - }
      - if (ucRxCnt > 38)//数据位判断//G5S为32，G5ST为38
      - {
      - pm_cf_10=(int)ucRxBuffer[4] * 256 + (int)ucRxBuffer[5]; //大气环境下PM2.5浓度计算
      - pm_cf_25=(int)ucRxBuffer[6] * 256 + (int)ucRxBuffer[7];
      - pm_cf_100=(int)ucRxBuffer[8] * 256 + (int)ucRxBuffer[9];
      - pm_at_10=(int)ucRxBuffer[10] * 256 + (int)ucRxBuffer[11];
      - pm_at_25=(int)ucRxBuffer[12] * 256 + (int)ucRxBuffer[13];
      - pm_at_100=(int)ucRxBuffer[14] * 256 + (int)ucRxBuffer[15];
      - particulate03=(int)ucRxBuffer[16] * 256 + (int)ucRxBuffer[17];
      - particulate05=(int)ucRxBuffer[18] * 256 + (int)ucRxBuffer[19];
      - particulate10=(int)ucRxBuffer[20] * 256 + (int)ucRxBuffer[21];
      - particulate25=(int)ucRxBuffer[22] * 256 + (int)ucRxBuffer[23];
      - particulate50=(int)ucRxBuffer[24] * 256 + (int)ucRxBuffer[25];
      - particulate100=(int)ucRxBuffer[26] * 256 + (int)ucRxBuffer[27];
      - HCHO=((int)ucRxBuffer[28] * 256 +(int)ucRxBuffer[29])/1000.000;
      - Temperature = ((int)ucRxBuffer[30] * 256 +(int)ucRxBuffer[31])/10.000;//包含温度
      - Humidity = ((int)ucRxBuffer[32] * 256 +(int)ucRxBuffer[33])/10.000;//包含湿度
      - if (pm_cf_25 > 999)//如果PM2.5数值>1000，返回重新计算
      - {
      - ucRxCnt = 0;
      - return;
      - }
      - ucRxCnt = 0;
      - return;
      - }
      - }
      - void setup() {
    - Serial.begin(9600);
    - display.init();
    - WiFi.disconnect();
    - delay(3000);
    - display.setTextAlignment(TEXT_ALIGN_LEFT);
    - display.setFont(ArialMT_Plain_16);
    - display.drawString(0, 0, "START ... Connecting");
    - display.display();
    - WiFi.begin("Xiaomi_6F5A","12345678");
    - delay(10000);
    - if (!(WiFi.status() == WL_CONNECTED)) {
    - display.setTextAlignment(TEXT_ALIGN_LEFT);
    - display.setFont(ArialMT_Plain_24);
    - display.drawString(0, 30, "Can\'t connect to wifi ...");
    - display.display();
    - } else {
    - display.setTextAlignment(TEXT_ALIGN_LEFT);
    - display.setFont(ArialMT_Plain_16);
    - display.drawString(0, 16, "I am connected! My IP address is");
    - display.display();
    - display.setTextAlignment(TEXT_ALIGN_LEFT);
    - display.setFont(ArialMT_Plain_16);
    - // display.drawString(0, 32, (WiFi.localIP()));
    - display.display();
    - }
    - delay(3000);
    - - }
      - void loop() {
      - while (Serial.available())
      - {
      - getG5(Serial.read());
      - }
      - Serial.print(" PM_CF1.0:");Serial.print(pm_cf_10);Serial.print(" ug/m3");//硬件串口输出数据
      - Serial.print(" PM_CF2.5:");Serial.print(pm_cf_25);Serial.print(" ug/m3");
      - Serial.print(" PM_CF10 :");Serial.print(pm_cf_100);Serial.println(" ug/m3");
      - Serial.print(" PM_AQI1.0:");Serial.print(pm_at_10);Serial.print(" ug/m3");
      - Serial.print(" PM_AQI2.5:");Serial.print(pm_at_25);Serial.print(" ug/m3");
      - Serial.print(" PM_AQI10:");Serial.print(pm_at_100);Serial.println(" ug/m3");
      - Serial.print(" PM_count03:");Serial.print(particulate03);Serial.print(" pcs/0.01cf");
      - Serial.print(" PM_count05:");Serial.print(particulate05);Serial.print(" pcs/0.01cf");
      - Serial.print(" PM_count10:");Serial.print(particulate10);Serial.print(" pcs/0.01cf");
      - Serial.print(" PM_count25:");Serial.print(particulate25);Serial.print(" pcs/0.01cf");
      - Serial.print(" PM_count100:");Serial.print(particulate100);Serial.println(" pcs/0.01cf");
      - Serial.print(" HCHO:");Serial.print(HCHO,3);Serial.println(" mg/m3");
      - Serial.print(" TS:");Serial.print(Temperature,1);Serial.println(" C"); //包含温度
      - Serial.print(" HS:");Serial.print(Humidity,1);Serial.println(" %RH"); //包含湿度
      - Serial.println("*********************************************");
      - display.clear();
      - display.setTextAlignment(TEXT_ALIGN_LEFT);
      - display.setFont(ArialMT_Plain_16);
      - display.drawString(0, 0, String("At")+pm_at_10 + String(",")+pm_at_25 + String(",")+pm_at_100);
      - display.display();
      - display.setTextAlignment(TEXT_ALIGN_LEFT);
      - display.setFont(ArialMT_Plain_16);
      - display.drawString(0, 16, String("F:")+HCHO);
      - display.display();
      - display.setTextAlignment(TEXT_ALIGN_LEFT);
      - display.setFont(ArialMT_Plain_16);
      - display.drawString(0, 32, String(" T:")+Temperature + String(" H:")+Humidity);
      - display.display();
    - if (client.connect("api.thingspeak.com",80)) {
    - writeAPIKey = "key=DBHMUBZGACL1P8U8";
    - // tsfield1Name = "&field1=10";
    - request_string = thingSpeakAddress;
    - // request_string += "key=";
    - request_string += writeAPIKey;
    - request_string += "&";
    - request_string += "field1";
    - request_string += "=";
    - request_string += pm_at_10;
    - request_string += "&";
    - request_string += "field2";
    - request_string += "=";
    - request_string += pm_at_25;
    - request_string += "&";
    - request_string += "field3";
    - request_string += "=";
    - request_string += pm_at_100;
    - request_string += "&";
    - request_string += "field4";
    - request_string += "=";
    - request_string += HCHO;
    - request_string += "&";
    - request_string += "field5";
    - request_string += "=";
    - request_string += Temperature;
    - request_string += "&";
    - request_string += "field6";
    - request_string += "=";
    - request_string += Humidity;
    - http.begin(request_string);
    - http.GET();
    - http.end();
    - - delay(5000);
      - }
      - }

呈現結果：

四.加入量測CO2的值

接線說明：
- 一個nodeMCU+擴展板、一個OLED顯示器(SDA接D2、SCL接D1)、一個G5(pin5(Tx)接Rx)、一個MH-Z19 CO2檢測傳感器
- OLED接3.3V的電，即可
- MH-Z19 (測CO2)：參考先前的文章，採用PWM的方式(ppm3)來讀取資料，因為pwm3的值與UART的值相近，將MH-Z19的PWM接Arduino的D6(可自選)，另外Vin接VCC、GND接GND
之前所完成的設備暫不拆除(含MH-Z19) ，再將這次的設備(G5)與上次的設備(G3)兩者所量測出的PM2.5值做一比較。

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