Added SHT library for DIY BASIC to be compatible with newer SHT40 T/RH sensor

Removed old example files

examples/DIY_BASIC/DIY_BASIC.ino

@@ -10,6 +10,7 @@ Kits (including a pre-soldered version) are available: https://www.airgradient.c
 The codes needs the following libraries installed:
 “WifiManager by tzapu, tablatronix” tested with version 2.0.11-beta
 “U8g2” by oliver tested with version 2.32.15
+"Arduino-SHT" by Johannes Winkelmann Version 1.2.2
 
 Configuration:
 Please set in the code below the configuration parameters.
@@ -30,8 +31,10 @@ MIT License
 #include <ESP8266HTTPClient.h>
 #include <WiFiClient.h>
 #include <U8g2lib.h>
+#include "SHTSensor.h"
 
 AirGradient ag = AirGradient();
+SHTSensor sht;
 
 U8G2_SSD1306_64X48_ER_1_HW_I2C u8g2(U8G2_R0, /* reset=*/ U8X8_PIN_NONE); //for DIY BASIC
 
@@ -78,6 +81,8 @@ long val;
 void setup()
 {
   Serial.begin(115200);
+  sht.init();
+  sht.setAccuracy(SHTSensor::SHT_ACCURACY_MEDIUM);
   u8g2.setBusClock(100000);
   u8g2.begin();
   updateOLED();
@@ -88,7 +93,7 @@ void setup()
   updateOLED2("Warm Up", "Serial#", String(ESP.getChipId(), HEX));
   ag.CO2_Init();
   ag.PMS_Init();
-  ag.TMP_RH_Init(0x44);
+  //ag.TMP_RH_Init(0x44);
 }
 
 
@@ -124,9 +129,19 @@ void updateTempHum()
 {
     if (currentMillis - previousTempHum >= tempHumInterval) {
       previousTempHum += tempHumInterval;
-      TMP_RH result = ag.periodicFetchData();
-      temp = result.t;
-      hum = result.rh;
+    if (sht.readSample()) {
+      Serial.print("SHT:\n");
+      Serial.print("  RH: ");
+      Serial.print(sht.getHumidity(), 2);
+      Serial.print("\n");
+      Serial.print("  T:  ");
+      Serial.print(sht.getTemperature(), 2);
+      Serial.print("\n");
+      temp = sht.getTemperature();
+      hum = sht.getHumidity();
+        } else {
+      Serial.print("Error in readSample()\n");
+      }
       Serial.println(String(temp));
     }
 }

examples/DIY_PRO_V4_2/DIY_PRO_V4_2.ino

@@ -14,6 +14,7 @@ The codes needs the following libraries installed:
 “U8g2” by oliver tested with version 2.32.15
 "Sensirion I2C SGP41" by Sensation Version 0.1.0
 "Sensirion Gas Index Algorithm" by Sensation Version 3.2.1
+"Arduino-SHT" by Johannes Winkelmann Version 1.2.2
 
 Configuration:
 Please set in the code below the configuration parameters.
@@ -35,6 +36,7 @@ CC BY-SA 4.0 Attribution-ShareAlike 4.0 International License
 #include <WiFiClient.h>
 
 #include <EEPROM.h>
+#include "SHTSensor.h"
 
 //#include "SGP30.h"
 #include <SensirionI2CSgp41.h>
@@ -48,6 +50,8 @@ AirGradient ag = AirGradient();
 SensirionI2CSgp41 sgp41;
 VOCGasIndexAlgorithm voc_algorithm;
 NOxGasIndexAlgorithm nox_algorithm;
+SHTSensor sht;
+
 // time in seconds needed for NOx conditioning
 uint16_t conditioning_s = 10;
 
@@ -108,7 +112,7 @@ unsigned long previousTempHum = 0;
 float temp = 0;
 int hum = 0;
 
-int buttonConfig=4;
+int buttonConfig=0;
 int lastState = LOW;
 int currentState;
 unsigned long pressedTime  = 0;
@@ -118,23 +122,28 @@ void setup() {
   Serial.begin(115200);
   Serial.println("Hello");
   u8g2.begin();
+  sht.init();
+  sht.setAccuracy(SHTSensor::SHT_ACCURACY_MEDIUM);
   //u8g2.setDisplayRotation(U8G2_R0);
 
   EEPROM.begin(512);
   delay(500);
 
   buttonConfig = String(EEPROM.read(addr)).toInt();
+  if (buttonConfig>3) buttonConfig=0;
+  delay(400);
   setConfig();
-
+  Serial.println("buttonConfig: "+String(buttonConfig));
    updateOLED2("Press Button", "Now for", "Config Menu");
     delay(2000);
-
+  pinMode(D7, INPUT_PULLUP);
   currentState = digitalRead(D7);
-  if (currentState == HIGH)
+  if (currentState == LOW)
   {
     updateOLED2("Entering", "Config Menu", "");
     delay(3000);
-    lastState = LOW;
+    lastState = HIGH;
+    setConfig();
     inConf();
   }
 
@@ -164,20 +173,26 @@ void inConf(){
   setConfig();
   currentState = digitalRead(D7);
 
-  if(lastState == LOW && currentState == HIGH) {
+  if (currentState){
+    Serial.println("currentState: high");
+  } else {
+    Serial.println("currentState: low");
+  }
+
+  if(lastState == HIGH && currentState == LOW) {
     pressedTime = millis();
   }
 
-  else if(lastState == HIGH && currentState == LOW) {
+  else if(lastState == LOW && currentState == HIGH) {
     releasedTime = millis();
     long pressDuration = releasedTime - pressedTime;
     if( pressDuration < 1000 ) {
       buttonConfig=buttonConfig+1;
-      if (buttonConfig>7) buttonConfig=0;
+      if (buttonConfig>3) buttonConfig=0;
     }
   }
 
-  if (lastState == HIGH && currentState == HIGH){
+  if (lastState == LOW && currentState == LOW){
      long passedDuration = millis() - pressedTime;
       if( passedDuration > 4000 ) {
         // to do
@@ -208,43 +223,23 @@ void inConf(){
 
 void setConfig() {
   if (buttonConfig == 0) {
-    updateOLED2("Temp. in C", "PM in ug/m3", "Display Top");
-      u8g2.setDisplayRotation(U8G2_R2);
-      inF = false;
-      inUSAQI = false;
-  } else if (buttonConfig == 1) {
-    updateOLED2("Temp. in C", "PM in US AQI", "Display Top");
-      u8g2.setDisplayRotation(U8G2_R2);
-      inF = false;
-      inUSAQI = true;
-  } else if (buttonConfig == 2) {
-    updateOLED2("Temp. in F", "PM in ug/m3", "Display Top");
-      u8g2.setDisplayRotation(U8G2_R2);
-      inF = true;
-      inUSAQI = false;
-  } else if (buttonConfig == 3) {
-    updateOLED2("Temp. in F", "PM in US AQI", "Display Top");
-      u8g2.setDisplayRotation(U8G2_R2);
-       inF = true;
-      inUSAQI = true;
-  } else if (buttonConfig == 4) {
-    updateOLED2("Temp. in C", "PM in ug/m3", "Display Bottom");
+    updateOLED2("Temp. in C", "PM in ug/m3", "Long Press Saves");
       u8g2.setDisplayRotation(U8G2_R0);
       inF = false;
       inUSAQI = false;
   }
-    if (buttonConfig == 5) {
-    updateOLED2("Temp. in C", "PM in US AQI", "Display Bottom");
+    if (buttonConfig == 1) {
+    updateOLED2("Temp. in C", "PM in US AQI", "Long Press Saves");
       u8g2.setDisplayRotation(U8G2_R0);
       inF = false;
       inUSAQI = true;
-  } else if (buttonConfig == 6) {
-    updateOLED2("Temp. in F", "PM in ug/m3", "Display Bottom");
+  } else if (buttonConfig == 2) {
+    updateOLED2("Temp. in F", "PM in ug/m3", "Long Press Saves");
     u8g2.setDisplayRotation(U8G2_R0);
       inF = true;
       inUSAQI = false;
-  } else  if (buttonConfig == 7) {
-    updateOLED2("Temp. in F", "PM in US AQI", "Display Bottom");
+  } else  if (buttonConfig == 3) {
+    updateOLED2("Temp. in F", "PM in US AQI", "Long Press Saves");
       u8g2.setDisplayRotation(U8G2_R0);
        inF = true;
       inUSAQI = true;
@@ -314,9 +309,20 @@ void updateTempHum()
 {
     if (currentMillis - previousTempHum >= tempHumInterval) {
       previousTempHum += tempHumInterval;
-      TMP_RH result = ag.periodicFetchData();
-      temp = result.t;
-      hum = result.rh;
+
+      if (sht.readSample()) {
+      Serial.print("SHT:\n");
+      Serial.print("  RH: ");
+      Serial.print(sht.getHumidity(), 2);
+      Serial.print("\n");
+      Serial.print("  T:  ");
+      Serial.print(sht.getTemperature(), 2);
+      Serial.print("\n");
+      temp = sht.getTemperature();
+      hum = sht.getHumidity();
+  } else {
+      Serial.print("Error in readSample()\n");
+  }
       Serial.println(String(temp));
     }
 }

examples/DIY_PRO_WITH_SENSIRION_NOX/DIY_PRO_WITH_SENSIRION_NOX.ino

@@ -1,310 +0,0 @@
-/*
-This is the code for the AirGradient DIY PRO Air Quality Sensor with an ESP8266 Microcontroller with the SGP40 TVOC module from AirGradient.
-
-It is a high quality sensor showing PM2.5, CO2, Temperature and Humidity on a small display and can send data over Wifi.
-
-Build Instructions: https://www.airgradient.com/open-airgradient/instructions/diy-pro/
-
-Kits (including a pre-soldered version) are available: https://www.airgradient.com/open-airgradient/kits/
-
-The codes needs the following libraries installed:
-“WifiManager by tzapu, tablatronix” tested with version 2.0.11-beta
-“U8g2” by oliver tested with version 2.32.15
-"Sensirion I2C SGP41" by Sensation Version 0.1.0
-"Sensirion Gas Index Algorithm" by Sensation Version 3.2.1
-
-Configuration:
-Please set in the code below the configuration parameters.
-
-If you have any questions please visit our forum at https://forum.airgradient.com/
-
-If you are a school or university contact us for a free trial on the AirGradient platform.
-https://www.airgradient.com/
-
-MIT License
-
-*/
-
-
-#include <AirGradient.h>
-#include <WiFiManager.h>
-#include <ESP8266WiFi.h>
-#include <ESP8266HTTPClient.h>
-#include <WiFiClient.h>
-
-//#include "SGP30.h"
-#include <SensirionI2CSgp41.h>
-#include <NOxGasIndexAlgorithm.h>
-#include <VOCGasIndexAlgorithm.h>
-
-
-#include <U8g2lib.h>
-
-AirGradient ag = AirGradient();
-SensirionI2CSgp41 sgp41;
-VOCGasIndexAlgorithm voc_algorithm;
-NOxGasIndexAlgorithm nox_algorithm;
-// time in seconds needed for NOx conditioning
-uint16_t conditioning_s = 10;
-
-// Display bottom right
-U8G2_SH1106_128X64_NONAME_F_HW_I2C u8g2(U8G2_R0, /* reset=*/ U8X8_PIN_NONE);
-
-// Replace above if you have display on top left
-//U8G2_SH1106_128X64_NONAME_F_HW_I2C u8g2(U8G2_R2, /* reset=*/ U8X8_PIN_NONE);
-
-
-// CONFIGURATION START
-
-//set to the endpoint you would like to use
-String APIROOT = "http://hw.airgradient.com/";
-
-// set to true to switch from Celcius to Fahrenheit
-boolean inF = false;
-
-// set to true if you want to connect to wifi. You have 60 seconds to connect. Then it will go into an offline mode.
-boolean connectWIFI=true;
-
-// CONFIGURATION END
-
-
-unsigned long currentMillis = 0;
-
-const int oledInterval = 5000;
-unsigned long previousOled = 0;
-
-const int sendToServerInterval = 10000;
-unsigned long previoussendToServer = 0;
-
-const int tvocInterval = 1000;
-unsigned long previousTVOC = 0;
-int TVOC = 0;
-int NOX = 0;
-
-const int co2Interval = 5000;
-unsigned long previousCo2 = 0;
-int Co2 = 0;
-
-const int pm25Interval = 5000;
-unsigned long previousPm25 = 0;
-int pm25 = 0;
-
-const int tempHumInterval = 2500;
-unsigned long previousTempHum = 0;
-float temp = 0;
-int hum = 0;
-
-void setup()
-{
-  Serial.begin(115200);
-  u8g2.setBusClock(100000);
-  u8g2.begin();
-  updateOLED();
-
-    if (connectWIFI) {
-    connectToWifi();
-  }
-
-  updateOLED2("Warming up the", "sensors.", "");
-  sgp41.begin(Wire);
-  ag.CO2_Init();
-  ag.PMS_Init();
-  ag.TMP_RH_Init(0x44);
-}
-
-
-void loop()
-{
-  currentMillis = millis();
-  updateTVOC();
-  updateOLED();
-  updateCo2();
-  updatePm25();
-  updateTempHum();
-  sendToServer();
-}
-
-void updateTVOC()
-{
- uint16_t error;
-    char errorMessage[256];
-    uint16_t defaultRh = 0x8000;
-    uint16_t defaultT = 0x6666;
-    uint16_t srawVoc = 0;
-    uint16_t srawNox = 0;
-    uint16_t defaultCompenstaionRh = 0x8000;  // in ticks as defined by SGP41
-    uint16_t defaultCompenstaionT = 0x6666;   // in ticks as defined by SGP41
-    uint16_t compensationRh = 0;              // in ticks as defined by SGP41
-    uint16_t compensationT = 0;               // in ticks as defined by SGP41
-
-    delay(1000);
-
-        compensationT = static_cast<uint16_t>((temp + 45) * 65535 / 175);
-        compensationRh = static_cast<uint16_t>(hum * 65535 / 100);
-
-    // 3. Measure SGP4x signals
-
-    if (conditioning_s > 0) {
-        // During NOx conditioning (10s) SRAW NOx will remain 0
-        error = sgp41.executeConditioning(compensationRh, compensationT, srawVoc);
-        conditioning_s--;
-    } else {
-        // Read Measurement
-        error = sgp41.measureRawSignals(compensationRh, compensationT, srawVoc,
-                                        srawNox);
-    }
-
-    if (error) {
-        Serial.print("Error trying to execute measureRawSignals(): ");
-        errorToString(error, errorMessage, 256);
-        Serial.println(errorMessage);
-    } else {
-        Serial.print("SRAW_VOC:");
-        Serial.print(srawVoc);
-        Serial.print("\t");
-        Serial.print("SRAW_NOx:");
-        Serial.println(srawNox);
-    }
-
-
-    if (currentMillis - previousTVOC >= tvocInterval) {
-      previousTVOC += tvocInterval;
-      TVOC = voc_algorithm.process(srawVoc);
-      NOX = nox_algorithm.process(srawNox);
-     // TVOC = sgp40.getVoclndex();
-      Serial.println(String(TVOC));
-    }
-}
-
-void updateCo2()
-{
-    if (currentMillis - previousCo2 >= co2Interval) {
-      previousCo2 += co2Interval;
-      Co2 = ag.getCO2_Raw();
-      Serial.println(String(Co2));
-    }
-}
-
-void updatePm25()
-{
-    if (currentMillis - previousPm25 >= pm25Interval) {
-      previousPm25 += pm25Interval;
-      pm25 = ag.getPM2_Raw();
-      Serial.println(String(pm25));
-    }
-}
-
-void updateTempHum()
-{
-    if (currentMillis - previousTempHum >= tempHumInterval) {
-      previousTempHum += tempHumInterval;
-      TMP_RH result = ag.periodicFetchData();
-      temp = result.t;
-      hum = result.rh;
-      Serial.println(String(temp));
-    }
-}
-
-void updateOLED() {
-   if (currentMillis - previousOled >= oledInterval) {
-     previousOled += oledInterval;
-
-    String ln3;
-    String ln1 = "PM:" + String(pm25) +  " CO2:" + String(Co2);
-  //  String ln2 = "AQI:" + String(PM_TO_AQI_US(pm25)) + " TVOC:" + String(TVOC);
-     String ln2 = "TVOC:" + String(TVOC) + " NOX:" + String(NOX);
-
-      if (inF) {
-        ln3 = "F:" + String((temp* 9 / 5) + 32) + " H:" + String(hum)+"%";
-        } else {
-        ln3 = "C:" + String(temp) + " H:" + String(hum)+"%";
-       }
-     updateOLED2(ln1, ln2, ln3);
-   }
-}
-
-void updateOLED2(String ln1, String ln2, String ln3) {
-      char buf[9];
-          u8g2.firstPage();
-          u8g2.firstPage();
-          do {
-          u8g2.setFont(u8g2_font_t0_16_tf);
-          u8g2.drawStr(1, 10, String(ln1).c_str());
-          u8g2.drawStr(1, 30, String(ln2).c_str());
-          u8g2.drawStr(1, 50, String(ln3).c_str());
-            } while ( u8g2.nextPage() );
-}
-
-void sendToServer() {
-   if (currentMillis - previoussendToServer >= sendToServerInterval) {
-     previoussendToServer += sendToServerInterval;
-      String payload = "{\"wifi\":" + String(WiFi.RSSI())
-      + (Co2 < 0 ? "" : ", \"rco2\":" + String(Co2))
-      + (pm25 < 0 ? "" : ", \"pm02\":" + String(pm25))
-      + (TVOC < 0 ? "" : ", \"tvoc_index\":" + String(TVOC))
-      + (NOX < 0 ? "" : ", \"nox_index\":" + String(NOX))
-      + ", \"atmp\":" + String(temp)
-      + (hum < 0 ? "" : ", \"rhum\":" + String(hum))
-      + "}";
-
-      if(WiFi.status()== WL_CONNECTED){
-        Serial.println(payload);
-        String POSTURL = APIROOT + "sensors/airgradient:" + String(ESP.getChipId(), HEX) + "/measures";
-        Serial.println(POSTURL);
-        WiFiClient client;
-        HTTPClient http;
-        http.begin(client, POSTURL);
-        http.addHeader("content-type", "application/json");
-        int httpCode = http.POST(payload);
-        String response = http.getString();
-        Serial.println(httpCode);
-        Serial.println(response);
-        http.end();
-      }
-      else {
-        Serial.println("WiFi Disconnected");
-      }
-   }
-}
-
-// Wifi Manager
- void connectToWifi() {
-   WiFiManager wifiManager;
-   //WiFi.disconnect(); //to delete previous saved hotspot
-   String HOTSPOT = "AG-" + String(ESP.getChipId(), HEX);
-   updateOLED2("60s to connect", "to Wifi Hotspot", HOTSPOT);
-   wifiManager.setTimeout(60);
-
-
-   WiFiManagerParameter custom_text("<p>This is just a text paragraph</p>");
-   wifiManager.addParameter(&custom_text);
-
-   WiFiManagerParameter parameter("parameterId", "Parameter Label", "default value", 40);
-   wifiManager.addParameter(&parameter);
-
-
-   Serial.println("Parameter 1:");
-   Serial.println(parameter.getValue());
-
-   if (!wifiManager.autoConnect((const char * ) HOTSPOT.c_str())) {
-     updateOLED2("booting into", "offline mode", "");
-     Serial.println("failed to connect and hit timeout");
-     delay(6000);
-   }
-
-   Serial.println("Parameter 2:");
-   Serial.println(parameter.getValue());
-
-}
-
-// Calculate PM2.5 US AQI
-int PM_TO_AQI_US(int pm02) {
-  if (pm02 <= 12.0) return ((50 - 0) / (12.0 - .0) * (pm02 - .0) + 0);
-  else if (pm02 <= 35.4) return ((100 - 50) / (35.4 - 12.0) * (pm02 - 12.0) + 50);
-  else if (pm02 <= 55.4) return ((150 - 100) / (55.4 - 35.4) * (pm02 - 35.4) + 100);
-  else if (pm02 <= 150.4) return ((200 - 150) / (150.4 - 55.4) * (pm02 - 55.4) + 150);
-  else if (pm02 <= 250.4) return ((300 - 200) / (250.4 - 150.4) * (pm02 - 150.4) + 200);
-  else if (pm02 <= 350.4) return ((400 - 300) / (350.4 - 250.4) * (pm02 - 250.4) + 300);
-  else if (pm02 <= 500.4) return ((500 - 400) / (500.4 - 350.4) * (pm02 - 350.4) + 400);
-  else return 500;
-};

examples/DIY_PRO_WITH_SGP30/DIY_PRO_WITH_SGP30.ino

@@ -1,248 +0,0 @@
-/*
-This is the code for the AirGradient DIY PRO Air Quality Sensor with an ESP8266 Microcontroller.
-
-It is a high quality sensor showing PM2.5, CO2, Temperature and Humidity on a small display and can send data over Wifi.
-
-Build Instructions: https://www.airgradient.com/open-airgradient/instructions/diy-pro/
-
-Kits (including a pre-soldered version) are available: https://www.airgradient.com/open-airgradient/kits/
-
-IMPORTANT: If you use SGP30 modules, you need to remove the Pull up resistors to make it work.
-See https://www.airgradient.com/open-airgradient/instructions/tvoc-on-airgradient-diy-sensor/
-
-If you want to use TVOC we strongly recommend you use the AirGradient SGP4x module available in our online shop.
-
-The codes needs the following libraries installed:
-“WifiManager by tzapu, tablatronix” tested with version 2.0.11-beta
-“U8g2” by oliver tested with version 2.32.15
-“SGP30” by Rob Tilaart tested with Version 0.1.5
-
-Configuration:
-Please set in the code below the configuration parameters.
-
-If you have any questions please visit our forum at https://forum.airgradient.com/
-
-If you are a school or university contact us for a free trial on the AirGradient platform.
-https://www.airgradient.com/
-
-CC BY-SA 4.0 Attribution-ShareAlike 4.0 International License
-
-*/
-
-
-#include <AirGradient.h>
-#include <WiFiManager.h>
-#include <ESP8266WiFi.h>
-#include <ESP8266HTTPClient.h>
-#include <WiFiClient.h>
-
-#include "SGP30.h"
-#include <U8g2lib.h>
-
-AirGradient ag = AirGradient();
-SGP30 SGP;
-
-// Display bottom right
-U8G2_SH1106_128X64_NONAME_F_HW_I2C u8g2(U8G2_R0, /* reset=*/ U8X8_PIN_NONE);
-
-// Replace above if you have display on top left
-//U8G2_SH1106_128X64_NONAME_F_HW_I2C u8g2(U8G2_R2, /* reset=*/ U8X8_PIN_NONE);
-
-
-// CONFIGURATION START
-
-//set to the endpoint you would like to use
-String APIROOT = "http://hw.airgradient.com/";
-
-// set to true to switch from Celcius to Fahrenheit
-boolean inF = false;
-
-// set to true if you want to connect to wifi. You have 60 seconds to connect. Then it will go into an offline mode.
-boolean connectWIFI=true;
-
-// CONFIGURATION END
-
-
-unsigned long currentMillis = 0;
-
-const int oledInterval = 5000;
-unsigned long previousOled = 0;
-
-const int sendToServerInterval = 10000;
-unsigned long previoussendToServer = 0;
-
-const int tvocInterval = 1000;
-unsigned long previousTVOC = 0;
-int TVOC = 0;
-
-const int co2Interval = 5000;
-unsigned long previousCo2 = 0;
-int Co2 = 0;
-
-const int pm25Interval = 5000;
-unsigned long previousPm25 = 0;
-int pm25 = 0;
-
-const int tempHumInterval = 2500;
-unsigned long previousTempHum = 0;
-float temp = 0;
-int hum = 0;
-
-void setup()
-{
-  Serial.begin(115200);
-  u8g2.setBusClock(100000);
-  u8g2.begin();
-  updateOLED();
-
-    if (connectWIFI) {
-    connectToWifi();
-  }
-
-  updateOLED2("Warming up the", "sensors.", "");
-
-  Serial.println(SGP.begin());
-  SGP.GenericReset();
-
-  ag.CO2_Init();
-  ag.PMS_Init();
-  ag.TMP_RH_Init(0x44);
-}
-
-
-void loop()
-{
-  currentMillis = millis();
-  updateTVOC();
-  updateOLED();
-  updateCo2();
-  updatePm25();
-  updateTempHum();
-  sendToServer();
-}
-
-void updateTVOC()
-{
-    if (currentMillis - previousTVOC >= tvocInterval) {
-      previousTVOC += tvocInterval;
-      SGP.measure(true);
-      TVOC = SGP.getTVOC();
-      Serial.println(String(TVOC));
-    }
-}
-
-void updateCo2()
-{
-    if (currentMillis - previousCo2 >= co2Interval) {
-      previousCo2 += co2Interval;
-      Co2 = ag.getCO2_Raw();
-      Serial.println(String(Co2));
-    }
-}
-
-void updatePm25()
-{
-    if (currentMillis - previousPm25 >= pm25Interval) {
-      previousPm25 += pm25Interval;
-      pm25 = ag.getPM2_Raw();
-      Serial.println(String(pm25));
-    }
-}
-
-void updateTempHum()
-{
-    if (currentMillis - previousTempHum >= tempHumInterval) {
-      previousTempHum += tempHumInterval;
-      TMP_RH result = ag.periodicFetchData();
-      temp = result.t;
-      hum = result.rh;
-      Serial.println(String(temp));
-    }
-}
-
-void updateOLED() {
-   if (currentMillis - previousOled >= oledInterval) {
-     previousOled += oledInterval;
-
-    String ln3;
-    String ln1 = "PM:" + String(pm25) +  " CO2:" + String(Co2);
-    String ln2 = "AQI:" + String(PM_TO_AQI_US(pm25)) + " TVOC:" + String(TVOC);
-
-      if (inF) {
-        ln3 = "F:" + String((temp* 9 / 5) + 32) + " H:" + String(hum)+"%";
-        } else {
-        ln3 = "C:" + String(temp) + " H:" + String(hum)+"%";
-       }
-     updateOLED2(ln1, ln2, ln3);
-   }
-}
-
-void updateOLED2(String ln1, String ln2, String ln3) {
-      char buf[9];
-          u8g2.firstPage();
-          u8g2.firstPage();
-          do {
-          u8g2.setFont(u8g2_font_t0_16_tf);
-          u8g2.drawStr(1, 10, String(ln1).c_str());
-          u8g2.drawStr(1, 30, String(ln2).c_str());
-          u8g2.drawStr(1, 50, String(ln3).c_str());
-            } while ( u8g2.nextPage() );
-}
-
-void sendToServer() {
-   if (currentMillis - previoussendToServer >= sendToServerInterval) {
-     previoussendToServer += sendToServerInterval;
-
-      String payload = "{\"wifi\":" + String(WiFi.RSSI())
-      + (Co2 < 0 ? "" : ", \"rco2\":" + String(Co2))
-      + (pm25 < 0 ? "" : ", \"pm02\":" + String(pm25))
-      + (TVOC < 0 ? "" : ", \"tvoc\":" + String(TVOC))
-      + ", \"atmp\":" + String(temp)
-      + (hum < 0 ? "" : ", \"rhum\":" + String(hum))
-      + "}";
-
-      if(WiFi.status()== WL_CONNECTED){
-        Serial.println(payload);
-        String POSTURL = APIROOT + "sensors/airgradient:" + String(ESP.getChipId(), HEX) + "/measures";
-        Serial.println(POSTURL);
-        WiFiClient client;
-        HTTPClient http;
-        http.begin(client, POSTURL);
-        http.addHeader("content-type", "application/json");
-        int httpCode = http.POST(payload);
-        String response = http.getString();
-        Serial.println(httpCode);
-        Serial.println(response);
-        http.end();
-      }
-      else {
-        Serial.println("WiFi Disconnected");
-      }
-   }
-}
-
-// Wifi Manager
- void connectToWifi() {
-   WiFiManager wifiManager;
-   //WiFi.disconnect(); //to delete previous saved hotspot
-   String HOTSPOT = "AG-" + String(ESP.getChipId(), HEX);
-   updateOLED2("60s to connect", "to Wifi Hotspot", HOTSPOT);
-   wifiManager.setTimeout(60);
-   if (!wifiManager.autoConnect((const char * ) HOTSPOT.c_str())) {
-     updateOLED2("booting into", "offline mode", "");
-     Serial.println("failed to connect and hit timeout");
-     delay(6000);
-   }
-}
-
-// Calculate PM2.5 US AQI
-int PM_TO_AQI_US(int pm02) {
-  if (pm02 <= 12.0) return ((50 - 0) / (12.0 - .0) * (pm02 - .0) + 0);
-  else if (pm02 <= 35.4) return ((100 - 50) / (35.4 - 12.0) * (pm02 - 12.0) + 50);
-  else if (pm02 <= 55.4) return ((150 - 100) / (55.4 - 35.4) * (pm02 - 35.4) + 100);
-  else if (pm02 <= 150.4) return ((200 - 150) / (150.4 - 55.4) * (pm02 - 55.4) + 150);
-  else if (pm02 <= 250.4) return ((300 - 200) / (250.4 - 150.4) * (pm02 - 150.4) + 200);
-  else if (pm02 <= 350.4) return ((400 - 300) / (350.4 - 250.4) * (pm02 - 250.4) + 300);
-  else if (pm02 <= 500.4) return ((500 - 400) / (500.4 - 350.4) * (pm02 - 350.4) + 400);
-  else return 500;
-};

examples/DIY_PRO_WITH_SGP40/DIY_PRO_WITH_SGP40.ino

@@ -1,255 +0,0 @@
-/*
-This is the code for the AirGradient DIY PRO Air Quality Sensor with an ESP8266 Microcontroller with the SGP40 TVOC module from AirGradient.
-
-It is a high quality sensor showing PM2.5, CO2, Temperature and Humidity on a small display and can send data over Wifi.
-
-Build Instructions: https://www.airgradient.com/open-airgradient/instructions/diy-pro/
-
-Kits (including a pre-soldered version) are available: https://www.airgradient.com/open-airgradient/kits/
-
-The codes needs the following libraries installed:
-“WifiManager by tzapu, tablatronix” tested with version 2.0.11-beta
-“U8g2” by oliver tested with version 2.32.15
-“DFRobot_SGP40” by DFRobot tested with Version 1.0.3
-
-Configuration:
-Please set in the code below the configuration parameters.
-
-If you have any questions please visit our forum at https://forum.airgradient.com/
-
-If you are a school or university contact us for a free trial on the AirGradient platform.
-https://www.airgradient.com/
-
-CC BY-SA 4.0 Attribution-ShareAlike 4.0 International License
-
-*/
-
-
-#include <AirGradient.h>
-#include <WiFiManager.h>
-#include <ESP8266WiFi.h>
-#include <ESP8266HTTPClient.h>
-#include <WiFiClient.h>
-
-//#include "SGP30.h"
-#include <DFRobot_SGP40.h>
-#include <U8g2lib.h>
-
-AirGradient ag = AirGradient();
-DFRobot_SGP40    sgp40;
-
-// Display bottom right
-U8G2_SH1106_128X64_NONAME_F_HW_I2C u8g2(U8G2_R0, /* reset=*/ U8X8_PIN_NONE);
-
-// Replace above if you have display on top left
-//U8G2_SH1106_128X64_NONAME_F_HW_I2C u8g2(U8G2_R2, /* reset=*/ U8X8_PIN_NONE);
-
-
-// CONFIGURATION START
-
-//set to the endpoint you would like to use
-String APIROOT = "http://hw.airgradient.com/";
-
-// set to true to switch from Celcius to Fahrenheit
-boolean inF = false;
-
-// set to true if you want to connect to wifi. You have 60 seconds to connect. Then it will go into an offline mode.
-boolean connectWIFI=true;
-
-// CONFIGURATION END
-
-
-unsigned long currentMillis = 0;
-
-const int oledInterval = 5000;
-unsigned long previousOled = 0;
-
-const int sendToServerInterval = 10000;
-unsigned long previoussendToServer = 0;
-
-const int tvocInterval = 1000;
-unsigned long previousTVOC = 0;
-int TVOC = 0;
-
-const int co2Interval = 5000;
-unsigned long previousCo2 = 0;
-int Co2 = 0;
-
-const int pm25Interval = 5000;
-unsigned long previousPm25 = 0;
-int pm25 = 0;
-
-const int tempHumInterval = 2500;
-unsigned long previousTempHum = 0;
-float temp = 0;
-int hum = 0;
-
-void setup()
-{
-  Serial.begin(115200);
-  u8g2.setBusClock(100000);
-  u8g2.begin();
-  updateOLED();
-
-    if (connectWIFI) {
-    connectToWifi();
-  }
-
-  updateOLED2("Warming up the", "sensors.", "");
-  sgp40.begin();
-  ag.CO2_Init();
-  ag.PMS_Init();
-  ag.TMP_RH_Init(0x44);
-}
-
-
-void loop()
-{
-  currentMillis = millis();
-  updateTVOC();
-  updateOLED();
-  updateCo2();
-  updatePm25();
-  updateTempHum();
-  sendToServer();
-}
-
-void updateTVOC()
-{
-    if (currentMillis - previousTVOC >= tvocInterval) {
-      previousTVOC += tvocInterval;
-      TVOC = sgp40.getVoclndex();
-      Serial.println(String(TVOC));
-    }
-}
-
-void updateCo2()
-{
-    if (currentMillis - previousCo2 >= co2Interval) {
-      previousCo2 += co2Interval;
-      Co2 = ag.getCO2_Raw();
-      Serial.println(String(Co2));
-    }
-}
-
-void updatePm25()
-{
-    if (currentMillis - previousPm25 >= pm25Interval) {
-      previousPm25 += pm25Interval;
-      pm25 = ag.getPM2_Raw();
-      Serial.println(String(pm25));
-    }
-}
-
-void updateTempHum()
-{
-    if (currentMillis - previousTempHum >= tempHumInterval) {
-      previousTempHum += tempHumInterval;
-      TMP_RH result = ag.periodicFetchData();
-      temp = result.t;
-      hum = result.rh;
-      Serial.println(String(temp));
-    }
-}
-
-void updateOLED() {
-   if (currentMillis - previousOled >= oledInterval) {
-     previousOled += oledInterval;
-
-    String ln3;
-    String ln1 = "PM:" + String(pm25) +  " CO2:" + String(Co2);
-    String ln2 = "AQI:" + String(PM_TO_AQI_US(pm25)) + " TVOC:" + String(TVOC);
-
-      if (inF) {
-        ln3 = "F:" + String((temp* 9 / 5) + 32) + " H:" + String(hum)+"%";
-        } else {
-        ln3 = "C:" + String(temp) + " H:" + String(hum)+"%";
-       }
-     updateOLED2(ln1, ln2, ln3);
-   }
-}
-
-void updateOLED2(String ln1, String ln2, String ln3) {
-      char buf[9];
-          u8g2.firstPage();
-          u8g2.firstPage();
-          do {
-          u8g2.setFont(u8g2_font_t0_16_tf);
-          u8g2.drawStr(1, 10, String(ln1).c_str());
-          u8g2.drawStr(1, 30, String(ln2).c_str());
-          u8g2.drawStr(1, 50, String(ln3).c_str());
-            } while ( u8g2.nextPage() );
-}
-
-void sendToServer() {
-   if (currentMillis - previoussendToServer >= sendToServerInterval) {
-     previoussendToServer += sendToServerInterval;
-      String payload = "{\"wifi\":" + String(WiFi.RSSI())
-      + (Co2 < 0 ? "" : ", \"rco2\":" + String(Co2))
-      + (pm25 < 0 ? "" : ", \"pm02\":" + String(pm25))
-      + (TVOC < 0 ? "" : ", \"tvoc_index\":" + String(TVOC))
-      + ", \"atmp\":" + String(temp)
-      + (hum < 0 ? "" : ", \"rhum\":" + String(hum))
-      + "}";
-
-      if(WiFi.status()== WL_CONNECTED){
-        Serial.println(payload);
-        String POSTURL = APIROOT + "sensors/airgradient:" + String(ESP.getChipId(), HEX) + "/measures";
-        Serial.println(POSTURL);
-        WiFiClient client;
-        HTTPClient http;
-        http.begin(client, POSTURL);
-        http.addHeader("content-type", "application/json");
-        int httpCode = http.POST(payload);
-        String response = http.getString();
-        Serial.println(httpCode);
-        Serial.println(response);
-        http.end();
-      }
-      else {
-        Serial.println("WiFi Disconnected");
-      }
-   }
-}
-
-// Wifi Manager
- void connectToWifi() {
-   WiFiManager wifiManager;
-   //WiFi.disconnect(); //to delete previous saved hotspot
-   String HOTSPOT = "AG-" + String(ESP.getChipId(), HEX);
-   updateOLED2("60s to connect", "to Wifi Hotspot", HOTSPOT);
-   wifiManager.setTimeout(60);
-
-
-   WiFiManagerParameter custom_text("<p>This is just a text paragraph</p>");
-   wifiManager.addParameter(&custom_text);
-
-   WiFiManagerParameter parameter("parameterId", "Parameter Label", "default value", 40);
-   wifiManager.addParameter(&parameter);
-
-
-   Serial.println("Parameter 1:");
-   Serial.println(parameter.getValue());
-
-   if (!wifiManager.autoConnect((const char * ) HOTSPOT.c_str())) {
-     updateOLED2("booting into", "offline mode", "");
-     Serial.println("failed to connect and hit timeout");
-     delay(6000);
-   }
-
-   Serial.println("Parameter 2:");
-   Serial.println(parameter.getValue());
-
-}
-
-// Calculate PM2.5 US AQI
-int PM_TO_AQI_US(int pm02) {
-  if (pm02 <= 12.0) return ((50 - 0) / (12.0 - .0) * (pm02 - .0) + 0);
-  else if (pm02 <= 35.4) return ((100 - 50) / (35.4 - 12.0) * (pm02 - 12.0) + 50);
-  else if (pm02 <= 55.4) return ((150 - 100) / (55.4 - 35.4) * (pm02 - 35.4) + 100);
-  else if (pm02 <= 150.4) return ((200 - 150) / (150.4 - 55.4) * (pm02 - 55.4) + 150);
-  else if (pm02 <= 250.4) return ((300 - 200) / (250.4 - 150.4) * (pm02 - 150.4) + 200);
-  else if (pm02 <= 350.4) return ((400 - 300) / (350.4 - 250.4) * (pm02 - 250.4) + 300);
-  else if (pm02 <= 500.4) return ((500 - 400) / (500.4 - 350.4) * (pm02 - 350.4) + 400);
-  else return 500;
-};