Hello,
I am trying to integrate Blynk in this code but so far I’m just shooting blanks considering my sub 0 level coding knowledge. Could anyone help?
Thank you.
/*
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/
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/
MIT 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_R3, /* 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.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())
+ ", \"rco2\":" + String(Co2)
+ ", \"pm02\":" + String(pm25)
+ ", \"tvoc\":" + String(TVOC)
+ ", \"atmp\":" + String(temp)
+ ", \"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;
};