hi guys i am a bit confused here with my project, my air quality sensor works in its own sketch but when i put it in the complete sketch it gives a zero reading,
#include <Wire.h>
#include <DS3231.h>
#include <LiquidCrystal_I2C.h>
#include "Adafruit_CCS811.h"
#include "Adafruit_SHT31.h"
Adafruit_CCS811 ccs;
#define EXHAUST 9
int i;
#define HUMIDIFIER 10
#define SETPOINT 95.0
#define DEADBAND 2.0
#define ON false
#define OFF true
const byte RelayPin = 8;
DS3231 rtc(SDA, SCL);
Time t;
LiquidCrystal_I2C lcd(0X27, 2, 1, 0, 4, 5, 6, 7);
int LIGHT = 7;
const int OnHour = 06;
const int OnMin = 01;
const int OffHour = 18;
const int OffMin = 01;
Adafruit_SHT31 sht31 = Adafruit_SHT31();
byte degree[8] =
{
0b00011,
0b00011,
0b00000,
0b00000,
0b00000,
0b00000,
0b00000,
0b00000,
};
void setup() {
Serial.begin(9600);
if (! sht31.begin(0x44)) { // Set to 0x45 for alternate i2c addr
Serial.println("Couldn't find SHT31");
while (1) delay(1000);
}
if (!ccs.begin()) {
Serial.println("Failed to start sensor! Please check your wiring.");
while (1);
}
// Wait for the sensor to be ready
while (!ccs.available());
while (!Serial);
rtc.begin();
pinMode(LIGHT, OUTPUT);
pinMode(RelayPin, OUTPUT);
digitalWrite(RelayPin, LOW);
lcd.begin(20, 4);
lcd.setBacklightPin(3, POSITIVE);
lcd.setBacklight(HIGH);
lcd.setCursor(0, 0);
lcd.print("Temp");
lcd.setCursor(17, 0);
lcd.print("C");
lcd.setCursor(0, 1);
lcd.print("Humidity");
lcd.setCursor(17, 1);
lcd.print("%");
lcd.setCursor(0, 2);
lcd.print("CO2");
lcd.setCursor(17, 2);
lcd.print("PPM");
Serial.println("CCS811 test");
pinMode(HUMIDIFIER, OUTPUT);
Serial.println("SHT31 test");
}
void SetRelayOnState(bool newOnState)
{
static bool currentOnState = true;
// Only print when the state changes
if (newOnState == currentOnState)
return; // Nothing to do
currentOnState = newOnState;
if (currentOnState)
{
digitalWrite(RelayPin, LOW);
Serial.println("RELAY ON");
}
else
{
digitalWrite(RelayPin, HIGH);
Serial.println("RELAY OFF");
}
}
void loop() {
if (ccs.available()) {
if (!ccs.readData()) {
Serial.print("CO2: ");
Serial.print(ccs.geteCO2());
Serial.print("ppm, TVOC: ");
Serial.println(ccs.getTVOC());
float t = sht31.readTemperature();
float h = sht31.readHumidity();
lcd.setCursor(0, 0);
lcd.setCursor(11, 0);
lcd.print(t, 2);
lcd.setCursor(11, 1);
lcd.print(h, 2);
lcd.setCursor(11, 2);
lcd.print(ccs.geteCO2());
if(ccs.geteCO2()>1000)
{
digitalWrite(EXHAUST, ON);
}
else
{
digitalWrite(EXHAUST, OFF);
}
if (digitalRead(HUMIDIFIER) == OFF)
{
if (h > SETPOINT + DEADBAND)
{
digitalWrite(HUMIDIFIER, ON);
}
}
else
{
if (h < SETPOINT - DEADBAND)
digitalWrite(HUMIDIFIER, OFF);
}
}
} static int currentMinute = -1;
t = rtc.getTime();
// Show time at the start of each new minute
if (t.min != currentMinute)
{
currentMinute = t.min;
Serial.print(t.hour);
Serial.print(" hour(s), ");
Serial.print(t.min);
Serial.println(" minute(s)");
}
if (t.min % 30 < 15)
{
// For the first half of every half hour, turn on the Relay
SetRelayOnState(true);
}
else
{
// For the second half of every half hour, turn off the Relay
SetRelayOnState(false);
}
if (t.hour == OnHour && t.min == OnMin)
{ digitalWrite(LIGHT, HIGH);
Serial.println("LIGHT ON");
}
else if (t.hour == OffHour && t.min == OffMin) {
digitalWrite(LIGHT, LOW);
Serial.print("LIGHT OFF");
}
}
