My Serial monitor outputs do not appear when Blynk runs

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1

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Hello, when I start blynk in my project, I cannot get Serial monitor outputs. Everything else is fine and works correctly, but when I load my code to my card by activating the “ Blynk.begin(auth, ssid, pass); ‘ line, my ’Serial.println(”Here In Loop“); ‘ in the loop method and ’Serial.println(”Here In Setup"); ” in the setup method do not appear on the Serial monitor. When I load the code to my card by commenting or deleting the line “ Blynk.begin(auth, ssid, pass); ”, all my Serial.println outputs appear on the monitor.

(Example) Serial.println(“Here In Setup”); I do not see the output on the monitor.

void setup() {
  Serial.begin(115200);
  Serial.println("Here In Setup");
  Blynk.begin(auth, ssid, pass);
  FastLED.addLeds<WS2812, DATA_PIN, COLOR_ORDER>(leds, NUM_LEDS);
  FastLED.clear();
}

(Example) Serial.println(“Here In Setup”); I see the output on the monitor.

void setup() {
  Serial.begin(115200);
  Serial.println("Here In Setup");
  //Blynk.begin(auth, ssid, pass);
  FastLED.addLeds<WS2812, DATA_PIN, COLOR_ORDER>(leds, NUM_LEDS);
  FastLED.clear();
}

(Example) Serial.println(“Here In Setup”); I see the output on the monitor.

void setup() {
  Serial.begin(115200);
  delay(1000);
  Serial.println("Here In Setup");
  Blynk.begin(auth, ssid, pass);
  FastLED.addLeds<WS2812, DATA_PIN, COLOR_ORDER>(leds, NUM_LEDS);
  FastLED.clear();
}

• Esp8266
• iOS 16

My Code:

#define BLYNK_TEMPLATE_ID "******"
#define BLYNK_TEMPLATE_NAME "Home"
#define BLYNK_AUTH_TOKEN "****************"
#define BLYNK_PRINT Serial

#include <ESP8266WiFi.h>
#include <BlynkSimpleEsp8266.h>

char auth[] = "***********************";
char ssid[] = "******";
char pass[] = "*******"; 

BlynkTimer timer;

void setup() {
  Serial.begin(115200);
  Serial.println("Here In Setup");
  Blynk.begin(auth, ssid, pass);
  FastLED.addLeds<WS2812, DATA_PIN, COLOR_ORDER>(leds, NUM_LEDS);
  FastLED.clear();
}

void loop() {
  Serial.println("Here In Loop");
  Blynk.run();
  timer.run();
  
}
2

This clearly isn’t your full code, and without seeing the full code then it’s impossible to help.

Also, do you see any unreadable characters in your serial monitor when your device boots?

Pete.

3

Yes i see any unreadable characters in my serial monitor when i device boots.

This is my full code:

#define BLYNK_TEMPLATE_ID "********"
#define BLYNK_TEMPLATE_NAME "Home"
#define BLYNK_AUTH_TOKEN "**************"
#define BLYNK_PRINT Serial

#include <ESP8266WiFi.h>
#include <BlynkSimpleEsp8266.h>

//------------ FasdLed --------

#define FASTLED_ESP8266_RAW_PIN_ORDER
#include <FastLED.h>
#define NUM_LEDS 4
#define DATA_PIN D7
#define COLOR_ORDER GRB

CRGBArray<NUM_LEDS> leds;

//------------ FasdLed --------

char auth[] = "********";
char ssid[] = "*******"; 
char pass[] = "*******"; 

BlynkTimer timer;

int r,g,b;

BLYNK_WRITE(V0)
{
 openLeds(255, 255, 255, 3);
}

BLYNK_WRITE(V1)
{
  r = param[0].asInt();
  g = param[1].asInt();
  b = param[2].asInt();
 
  openLeds(r, g, b, 3);

  Serial.println(r);
  Serial.println(g);
  Serial.println(b);
}

BLYNK_WRITE(V2)
{
  int valueV1 = param.asInt();
  if(valueV1 == 1)
  {
    Serial.println("Burada V2");
  }
  openLeds(255, 255, 0, 3);
  
}


BLYNK_WRITE(V3)
{
  Serial.println("Burada V3");
  closeLeds(3);
}


void setup() {
  Serial.begin(115200);
  Serial.println("Here In Setup");
  Blynk.begin(auth, ssid, pass);
  FastLED.addLeds<WS2812, DATA_PIN, COLOR_ORDER>(leds, NUM_LEDS);
  FastLED.clear();
}

void loop() {
  Serial.println("Here In Loop");
  Blynk.run();
  timer.run();
  
}


void Blynk_Delay(int milli){
   int end_time = millis() + milli;
   while(millis() < end_time){
       Blynk.run();
       yield();
   }
}



void openLeds(int r, int g, int b, int ledSize){
    FastLED.clear();
  
    for(int i=0; i<=ledSize; i++)
    {
       leds[i] = CRGB(r, g, b);
    }
    
    FastLED.show();
}


void closeLeds(int ledSize){
  FastLED.clear();
  
  for(int i=0; i<=ledSize; i++)
  {
     leds[i] = CRGB(0, 0, 0);
  }
    
    FastLED.show();
}

My serial monitor output:

imgg
imgg1515×543 11.6 KB

4

Delete this line of code…

and change this…

to this…

Blynk.begin(BLYNK_AUTH_TOKEN, ssid, pass);

Change this…

to this…

Serial.begin(74880);

and set your serial monitor to 74880

When you post serial output please copy/paste the text and use triple backticks rather than posting screenshots.

Do you have any other connections to your board other than the USB cable and D7?

Pete.

5

I think you asked me to delete the line

char auth = "**************”;

And I deleted it. I updated the line

Blynk.begin(BLYNK_AUTH_TOKEN, ssid, pass);

in this way. I updated the line Serial.begin(74880); in this way and got the following output on the serial monitor. No, I did not give any other connection to my card except usb and D7.

 ets Jan  8 2013,rst cause:2, boot mode:(3,6)

load 0x4010f000, len 3424, room 16 
tail 0
chksum 0x2e
load 0x3fff20b8, len 40, room 8 
tail 0
chksum 0x2b
csum 0x2b
v00047410
~ld
rf cal sector: 1020
freq trace enable 0
rf[112] : 0⸮[117] Connecting to HelloWorld
[4942] Connected to WiFi
[4942] IP: 192.168.1.101
[4942] 
    ___  __          __
   / _ )/ /_ _____  / /__
  / _  / / // / _ \/  '_/
 /____/_/\_, /_//_/_/\_\
        /___/ v1.3.2 on ESP8266

 #StandWithUkraine    https://bit.ly/swua


[4958] Connecting to blynk.cloud:80
[54
6

I’d try rebooting your router.

If that doesn’t work then add:

#define BLYNK_DEBUG

to your sketch near the top.

Pete.

1 Like
7

My problem was solved, thank you.

1 Like