My Blynk Arduino project keeps disconnecting and reconnecting. pretty much every 3 seconds. It is not my board, wifi, or a power issue.
Please give me a solution.
my code is below…
#define BLYNK_TEMPLATE_ID "xxxxxxxxxxxxxxxx"
#define BLYNK_DEVICE_NAME "xxxxxxxxxxxxxxxxx"
#define BLYNK_AUTH_TOKEN "xxxxxxxxxxxxxxxx"
char ssid[] = "xxxxxxxxxx";
char pass[] = "xxxxxxxxxxxx";
bool fetch_blynk_state = true;
/* Comment this out to disable prints and save space */
#define BLYNK_PRINT Serial
#include <ESP8266WiFi.h>
#include <BlynkSimpleEsp8266.h>
#include <DHT.h>
#include <LiquidCrystal_I2C.h> //liquid crystal with I2C library
#include <Wire.h> //wire library
LiquidCrystal_I2C lcd(0x3F,16,2); // set the LCD address to 0x27 for a 16 chars and 2 line display
int SCL_pin = 14; //Pin D5
int SDA_pin = 12; //Pin D6
char array1[] = "xxxxxxxxxxxxxxxx "; //an array to print on line 0
char array2[] = "xxxxxxxxxxxxx "; //an array to print on line 1
char array3[] = "xxxxxxxxxxx "; //an array to print on line 0
char array4[] = "xxxxxxxxxxxxxxx "; //an array to print on line 1
char array5[] = "xxxxxxxxxxxxxx "; //an array to print on line 0
char array6[] = "xxxxxxxxxxxxxx "; //an array to print on line 1
char array7[] = "xxxxxxxxxxxxx "; //an array to print on line 0
char array8[] = "xxxxxxxxxxxxxxxxxxxx "; //an array to print on line 1
char array9[] = "xxxxxxxxxxxxxxxxx "; //an array to print on line 0
char array10[] = "xxxxxxxxxxxxxxxxx "; //an array to print on line 1
char array11[] = "**Thank You** "; //an array to print on line 1
/************************* Pin Definition *********************************/
#define DHTPIN D7
#define RelayPin5 D1
#define wifiLed D0
//buzzer to use it for alert
#define buzzer D2
//Selection pins for multiplexer module to switch between different sensors and give data on a single analog pin.
#define S0 D3
#define S1 D4
//Analog pin to read the incoming analog value from different sensors.
#define analogpin A0
int wifiFlag = 0;
int gas;
int motion;
int sound;
int light;
char auth[] = BLYNK_AUTH_TOKEN;
// Uncomment whatever type we're using!
#define DHTTYPE DHT11 // DHT 11
DHT dht(DHTPIN, DHTTYPE);
BlynkTimer timer;
void checkBlynkStatus()
{ // called every 3 seconds by SimpleTimer
bool isconnected = Blynk.connected();
if (isconnected == false) {
wifiFlag = 1;
Serial.println("Blynk Not Connected");
digitalWrite(wifiLed, LOW);
}
if (isconnected == true) {
wifiFlag = 0;
Serial.println("Blynk Connected");
digitalWrite(wifiLed, HIGH);
}
}
void sendSensor()
{
float h = dht.readHumidity();
float t = dht.readTemperature(); // or dht.readTemperature(true) for Fahrenheit
if (isnan(h) || isnan(t))
{
Serial.println("Failed to read from DHT sensor!");
return;
}
Blynk.virtualWrite(V0, t);
Blynk.virtualWrite(V1, h);
Blynk.virtualWrite(V2, gas);
Blynk.virtualWrite(V3, motion);
Blynk.virtualWrite(V4, sound);
Blynk.virtualWrite(V5, light);
}
void setup()
{
Serial.begin(9600);
pinMode(wifiLed, OUTPUT);
dht.begin();
pinMode(S0, OUTPUT);
pinMode(S1, OUTPUT);
pinMode(RelayPin5, OUTPUT);
pinMode(A0, INPUT);
pinMode(buzzer, OUTPUT);
pinMode(SCL_pin, OUTPUT);
pinMode(SDA_pin, OUTPUT);
digitalWrite(SDA_pin,LOW);
digitalWrite(SCL_pin, LOW);
Serial.println("Beginning");
Wire.begin(SDA_pin ,SCL_pin);
lcd.backlight(); //Turn on backlight
// digitalWrite(wifiLed, HIGH);
//Blynk.begin(auth, ssid, pass);
WiFi.begin(ssid, pass);
timer.setInterval(2000L, checkBlynkStatus); // check if Blynk server is connected every 2 seconds
Blynk.config(auth);
delay(1000);
}
void loop()
{
lcd.setCursor(0, 0); //set cursor at top left
lcd.print(array1);//will only print the first letter of the array
lcd.setCursor(0, 1); //set cursor at left space on 2nd row
lcd.print(array2);//will only print the first letter of the array
delay(3000);
lcd.clear();
lcd.setCursor(0, 0);
for ( int positionCounter1 = 0; positionCounter1 < 17; positionCounter1++)
{
lcd.print(array3[positionCounter1]); //prints a 17 character array without scrolling
delay(250);
}
{
lcd.setCursor(0, 1);
for (int positionCounter1 = 0; positionCounter1 < 17; positionCounter1++)
{
lcd.print(array4[positionCounter1]);//prints a 17 character or array without scrolling
}
delay(3000);
lcd.clear();
}
lcd.setCursor(0, 0);
for ( int positionCounter1 = 0; positionCounter1 < 17; positionCounter1++)
{
lcd.print(array5[positionCounter1]); //prints a 17 character array without scrolling
delay(250);
}
{
lcd.setCursor(0, 1);
for (int positionCounter1 = 0; positionCounter1 < 17; positionCounter1++)
{
lcd.print(array6[positionCounter1]);//prints a 17 character or array without scrolling
}
delay(3000);
lcd.clear();
}
lcd.setCursor(0, 0);
for ( int positionCounter1 = 0; positionCounter1 < 17; positionCounter1++)
{
lcd.print(array7[positionCounter1]); //prints a 17 character array without scrolling
delay(250);
}
{
lcd.setCursor(0, 1);
for (int positionCounter1 = 0; positionCounter1 < 17; positionCounter1++)
{
lcd.print(array8[positionCounter1]);//prints a 17 character or array without scrolling
}
delay(3000);
lcd.clear();
}
lcd.setCursor(0, 0);
for ( int positionCounter1 = 0; positionCounter1 < 17; positionCounter1++)
{
lcd.print(array9[positionCounter1]); //prints a 17 character array without scrolling
delay(250);
}
{
lcd.setCursor(0, 1);
for (int positionCounter1 = 0; positionCounter1 < 17; positionCounter1++)
{
lcd.print(array10[positionCounter1]);//prints a 17 character or array without scrolling
}
delay(3000);
lcd.clear();
lcd.setCursor(1, 0); //set cursor at top left
lcd.print(array1);//will only print the first letter of the array
lcd.setCursor(2, 1);
for (int positionCounter1 = 0; positionCounter1 < 17; positionCounter1++)
{
lcd.print(array11[positionCounter1]);//prints a 17 character or array without scrolling
}
}
// Now we can publish stuff!
// Address 00
digitalWrite(S0, LOW);
digitalWrite(S1, LOW);
gas = analogRead(analogpin);
Serial.print("Gas - "); Serial.println(gas);
// Address 10
digitalWrite(S0, HIGH);
digitalWrite(S1, LOW);
motion = analogRead(analogpin);
if (motion > 512)
{
motion = 1;
digitalWrite(RelayPin5, LOW);
Serial.print("Motion Detected - ");
}
else
{
motion = 0;
digitalWrite(RelayPin5, HIGH);
Serial.print("Nothing - ");
}
// Address 01
digitalWrite(S0, LOW);
digitalWrite(S1, HIGH);
sound = analogRead(analogpin);
Serial.print("sound - "); Serial.println(sound);
// Address 11
digitalWrite(S0, HIGH);
digitalWrite(S1, HIGH);
int raw_light = analogRead(analogpin);
light = map(raw_light, 1024, 0, 0, 100);
Serial.print("Light - "); Serial.println(light);
Blynk.run();
timer.run();
} ```
