My ESP 32 Device LED is not blinking

[Kiran_Raju]

Hi All,

In the blynk could created a templated then and by using template id and pass, i kept in a code and uploaded to my ESP32 board, below is the code and remaining details, after upload done successfully, then i try to configure using blynk app, it was not finding and in my ESP32 device LED is not blinking, please help to resolve this.

this is the issue with second device but in case of my first device, it was successfully uploaded and configured, but after 1-2 days that device showing offline on my mobile and the same issue ESP 32 Device LED not blinking if click on reset, it is working for 2min then LED is just glowing not blinking.

please help me on these issues…

. Add details :
• ESp32 wifi
• Smartphone OS (Android)8.0
• Blynk server Cloud
• Blynk Library version
• Add your sketch code. Code should be formatted as example below.

Simply paste your code between ``` If you don’t format your code, your topic can be deleted by moderators.

 /**********************************************************************************
 *  TITLE: Blynk 2.0 + IR + Manual Switch control 8 Relays using ESP32 with DHT11 sensor, LDR, Realtime Feedback & No WiFi control
 *  Click on the following links to learn more. 
 *  YouTube Video: https://youtu.be/Vgyj3cCAioI
 *  Related Blog : https://iotcircuithub.com/esp32-projects/
 *  by Tech StudyCell
 *  Preferences--> Aditional boards Manager URLs : 
 *  https://dl.espressif.com/dl/package_esp32_index.json, http://arduino.esp8266.com/stable/package_esp8266com_index.json
 *  
 *  Download Board ESP32 (1.0.6) : https://github.com/espressif/arduino-esp32
 *  
 *  Download the Libraries:
 *  Blynk 1.0.1 Library:  https://github.com/blynkkk/blynk-library
 *  IRremote Library (3.3.0): https://github.com/Arduino-IRremote/Arduino-IRremote
 *  DHT Library (1.4.2): https://github.com/adafruit/DHT-sensor-library
 **********************************************************************************/

// Fill-in information from your Blynk Template here
#define BLYNK_TEMPLATE_ID "TMPLYTt1TtOx"
#define BLYNK_DEVICE_NAME "ESP32Copy"

#define BLYNK_FIRMWARE_VERSION        "0.1.0"

#define BLYNK_PRINT Serial
//#define BLYNK_DEBUG
//#define APP_DEBUG

// Uncomment your board, or configure a custom board in Settings.h
//#define USE_WROVER_BOARD

// #include <DHT.h>  
#include <IRremote.h>

#define IR_RECV_PIN 35 // D35 (IR receiver pin)

IRrecv irrecv(IR_RECV_PIN);
decode_results results;
  
// Uncomment whatever type you're using!
// #define DHTTYPE DHT11     // DHT 11
//#define DHTTYPE DHT22   // DHT 22, AM2302, AM2321
//#define DHTTYPE DHT21   // DHT 21, AM2301

// #define DHTPIN              16 //D16  pin connected with DHT
#define LDR_PIN             34 //D34  pin connected with LDR

// define the GPIO connected with Relays and switches
#define RelayPin1 23  //D23
#define RelayPin2 22  //D22
#define RelayPin3 21  //D21
#define RelayPin4 19  //D19
#define RelayPin5 18  //D18
#define RelayPin6 5   //D5
#define RelayPin7 25  //D25
#define RelayPin8 26  //D26

#define SwitchPin1 13  //D13
#define SwitchPin2 12  //D12
#define SwitchPin3 14  //D14
#define SwitchPin4 27  //D27
#define SwitchPin5 33  //D33
#define SwitchPin6 32  //D32
#define SwitchPin7 15  //D15
#define SwitchPin8 4   //D4

#define wifiLed    2   //D2

#define VPIN_BUTTON_1    V1 
#define VPIN_BUTTON_2    V2
#define VPIN_BUTTON_3    V3 
#define VPIN_BUTTON_4    V4
#define VPIN_BUTTON_5    V5 
#define VPIN_BUTTON_6    V6
#define VPIN_BUTTON_7    V7 
#define VPIN_BUTTON_8    V8

#define VPIN_BUTTON_C    V9
#define VPIN_TEMPERATURE V10
#define VPIN_HUMIDITY    V11
#define VPIN_LDR         V12

// Relay State
bool toggleState_1 = LOW; //Define integer to remember the toggle state for relay 1
bool toggleState_2 = LOW; //Define integer to remember the toggle state for relay 2
bool toggleState_3 = LOW; //Define integer to remember the toggle state for relay 3
bool toggleState_4 = LOW; //Define integer to remember the toggle state for relay 4
bool toggleState_5 = LOW; //Define integer to remember the toggle state for relay 5
bool toggleState_6 = LOW; //Define integer to remember the toggle state for relay 6
bool toggleState_7 = LOW; //Define integer to remember the toggle state for relay 7
bool toggleState_8 = LOW; //Define integer to remember the toggle state for relay 8

// Switch State
bool SwitchState_1 = LOW;
bool SwitchState_2 = LOW;
bool SwitchState_3 = LOW;
bool SwitchState_4 = LOW;
bool SwitchState_5 = LOW;
bool SwitchState_6 = LOW;
bool SwitchState_7 = LOW;
bool SwitchState_8 = LOW;

float temperature1 = 0;
float humidity1   = 0;
int   ldrVal;

#include "BlynkEdgent.h"

BlynkTimer timer2;

// DHT dht(DHTPIN, DHTTYPE);

void readSensor(){
    
  ldrVal = map(analogRead(LDR_PIN), 0, 4095, 10, 0);
  
  // 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;
  // }
  // else {
  //   humidity1 = h;
  //   temperature1 = t;
  //  // Serial.println(temperature1);
  //  // Serial.println(ldrVal);
  // }  
}

void sendSensor()
{
  readSensor();
  // You can send any value at any time.
  // Please don't send more that 10 values per second.
  Blynk.virtualWrite(VPIN_HUMIDITY, humidity1);
  Blynk.virtualWrite(VPIN_TEMPERATURE, temperature1);
  Blynk.virtualWrite(VPIN_LDR, ldrVal);
}

//BLYNK_CONNECTED() {
//  // Request the latest state from the server
//  Blynk.syncVirtual(VPIN_BUTTON_1);
//  Blynk.syncVirtual(VPIN_BUTTON_2);
//  Blynk.syncVirtual(VPIN_BUTTON_3);
//  Blynk.syncVirtual(VPIN_BUTTON_4);
//  Blynk.syncVirtual(VPIN_BUTTON_5);
//  Blynk.syncVirtual(VPIN_BUTTON_6);
//  Blynk.syncVirtual(VPIN_BUTTON_7);
//  Blynk.syncVirtual(VPIN_BUTTON_8);
//  Blynk.syncVirtual(VPIN_TEMPERATURE);
//  Blynk.syncVirtual(VPIN_HUMIDITY);
//  Blynk.syncVirtual(VPIN_LDR);
//}

// When App button is pushed - switch the state

BLYNK_WRITE(VPIN_BUTTON_1) {
  toggleState_1 = param.asInt();
  if(toggleState_1 == 1){
    digitalWrite(RelayPin1, LOW);
  }
  else { 
    digitalWrite(RelayPin1, HIGH);
  }
}

BLYNK_WRITE(VPIN_BUTTON_2) {
  toggleState_2 = param.asInt();
  if(toggleState_2 == 1){
    digitalWrite(RelayPin2, LOW);
  }
  else { 
    digitalWrite(RelayPin2, HIGH);
  }
}

BLYNK_WRITE(VPIN_BUTTON_3) {
  toggleState_3 = param.asInt();
  if(toggleState_3 == 1){
    digitalWrite(RelayPin3, LOW);
  }
  else { 
    digitalWrite(RelayPin3, HIGH);
  }
}

BLYNK_WRITE(VPIN_BUTTON_4) {
  toggleState_4 = param.asInt();
  if(toggleState_4 == 1){
    digitalWrite(RelayPin4, LOW);
  }
  else { 
    digitalWrite(RelayPin4, HIGH);
  }
}

BLYNK_WRITE(VPIN_BUTTON_5) {
  toggleState_5 = param.asInt();
  if(toggleState_5 == 1){
    digitalWrite(RelayPin5, LOW);
  }
  else { 
    digitalWrite(RelayPin5, HIGH);
  }
}

BLYNK_WRITE(VPIN_BUTTON_6) {
  toggleState_6 = param.asInt();
  if(toggleState_6 == 1){
    digitalWrite(RelayPin6, LOW);
  }
  else { 
    digitalWrite(RelayPin6, HIGH);
  }
}

BLYNK_WRITE(VPIN_BUTTON_7) {
  toggleState_7 = param.asInt();
  if(toggleState_7 == 1){
    digitalWrite(RelayPin7, LOW);
  }
  else { 
    digitalWrite(RelayPin7, HIGH);
  }
}

BLYNK_WRITE(VPIN_BUTTON_8) {
  toggleState_8 = param.asInt();
  if(toggleState_8 == 1){
    digitalWrite(RelayPin8, LOW);
  }
  else { 
    digitalWrite(RelayPin8, HIGH);
  }
}

BLYNK_WRITE(VPIN_BUTTON_C) {
  all_SwitchOff();
}


void all_SwitchOff(){
  toggleState_1 = 0; digitalWrite(RelayPin1, HIGH); Blynk.virtualWrite(VPIN_BUTTON_1, toggleState_1); delay(100);
  toggleState_2 = 0; digitalWrite(RelayPin2, HIGH); Blynk.virtualWrite(VPIN_BUTTON_2, toggleState_2); delay(100);
  toggleState_3 = 0; digitalWrite(RelayPin3, HIGH); Blynk.virtualWrite(VPIN_BUTTON_3, toggleState_3); delay(100);
  toggleState_4 = 0; digitalWrite(RelayPin4, HIGH); Blynk.virtualWrite(VPIN_BUTTON_4, toggleState_4); delay(100);
  toggleState_5 = 0; digitalWrite(RelayPin5, HIGH); Blynk.virtualWrite(VPIN_BUTTON_5, toggleState_5); delay(100);
  toggleState_6 = 0; digitalWrite(RelayPin6, HIGH); Blynk.virtualWrite(VPIN_BUTTON_6, toggleState_6); delay(100);
  toggleState_7 = 0; digitalWrite(RelayPin7, HIGH); Blynk.virtualWrite(VPIN_BUTTON_7, toggleState_7); delay(100);
  toggleState_8 = 0; digitalWrite(RelayPin8, HIGH); Blynk.virtualWrite(VPIN_BUTTON_8, toggleState_8); delay(100);
  Blynk.virtualWrite(VPIN_HUMIDITY, humidity1);
  Blynk.virtualWrite(VPIN_TEMPERATURE, temperature1);
  Blynk.virtualWrite(VPIN_LDR, ldrVal);
}

void setup()
{
  Serial.begin(115200);

  pinMode(RelayPin1, OUTPUT);
  pinMode(RelayPin2, OUTPUT);
  pinMode(RelayPin3, OUTPUT);
  pinMode(RelayPin4, OUTPUT);
  pinMode(RelayPin5, OUTPUT);
  pinMode(RelayPin6, OUTPUT);
  pinMode(RelayPin7, OUTPUT);
  pinMode(RelayPin8, OUTPUT);

  pinMode(wifiLed, OUTPUT);

  pinMode(SwitchPin1, INPUT_PULLUP);
  pinMode(SwitchPin2, INPUT_PULLUP);
  pinMode(SwitchPin3, INPUT_PULLUP);
  pinMode(SwitchPin4, INPUT_PULLUP);
  pinMode(SwitchPin5, INPUT_PULLUP);
  pinMode(SwitchPin6, INPUT_PULLUP);
  pinMode(SwitchPin7, INPUT_PULLUP);
  pinMode(SwitchPin8, INPUT_PULLUP);
  
  //During Starting all Relays should TURN OFF
  digitalWrite(RelayPin1, HIGH);
  digitalWrite(RelayPin2, HIGH);
  digitalWrite(RelayPin3, HIGH);
  digitalWrite(RelayPin4, HIGH);
  digitalWrite(RelayPin5, HIGH);
  digitalWrite(RelayPin6, HIGH);
  digitalWrite(RelayPin7, HIGH);
  digitalWrite(RelayPin8, HIGH);

  irrecv.enableIRIn(); // Enabling IR sensor
  BlynkEdgent.begin();
  // dht.begin();
  
  // Setup a function to be called every 2 seconds
  timer2.setInterval(2000L, sendSensor);

}
void loop() {

    BlynkEdgent.run();
    
    manual_control(); //Manual Switch Control
    ir_remote(); //IR remote Control
    timer2.run();
}

[PeteKnight]

You haven’t un-commented a board type, so the custom board type in Settings.h is being used.

It probably doesn’t correspond to the GPIO pins on your board.
You should read this…

Troubleshooting Edgent Dynamic Provisioning Problems

There seems to quite a bit of confusion about how the dynamic provisioning process works in the Edgent sketch examples, and how to re-provision a device with new WiFi credentials. Many people omit to configure the board type correctly in the sketch, and this also causes problems. Here’s a guide to how the process works, and the things to watch out for… Overview You start by creating a template, preferably in the web console (https://blynk.cloud/) This gives you the BLYNK_TEMPLATE_ID and BLYNK…

Pete.