Wemos couldn't connect with Blynk app

Solved
1

I have connected Wemos D1 Mini with servo motor, also designed blynk app for control the movement of the servo motor and wrote code of it all things pass4ed fine until I tried to use the blynk app to control the movement of the servo , it couldn’t connect to network (Wemos Wi1fi) inside app and wrote (wasn’t online yet) so I couldn’t try blynk 4.
please there is anyone have an idea how can I solve this problem or where the problem exactly?

This is Photo for the problem in my app:

m
m1076×2048 55 KB

Hardware model:

Wemos . . . . servo

Gnd . . . . Brown
5V . . . . Red
D4 . . . . Yellow

This is My code:

#define BLYNK_PRINT Serial
#include <ESP8266WiFi.h>
#include <BlynkSimpleEsp8266.h>
#include <Servo.h>

char auth[] = "A0BpknRKFxxagGXlkxzvuFSDX-rrOnAu"; 
char ssid[] = "sssssss"; //nama wifi
char pass[] = "12345"; //password wifi

Servo servo;

void setup() {
Serial.begin(9600);
Blynk.begin(auth, ssid, pass);
servo.attach(2);
}

void servo_via_button1() {
 int pos;
//from 0 - to 180 
 for (pos = 0; pos <= 180; pos += 1) {
   servo.write(pos);              
   delay(15);        
 }
}

void servo_via_button2() {
 int pos1;4444
//from 180 - to 0 
 for (pos1 = 180; pos1 >= 0; pos1 -= 1) {
   servo.write(pos1);            
   delay(15);              
 }
}

BLYNK_WRITE(V3) {
//servo.write(param.asInt());
 int pinValue = param.asInt();
 if (pinValue == 1) {    
   servo_via_button1();             
   Blynk.run(); 
   int pinValue = 0;  
   Blynk.syncVirtual(V3);
 }
}

BLYNK_WRITE(V4) {
 int pinValue1 = param.asInt();
 if (pinValue1 == 1) {    
   servo_via_button2();             
   Blynk.run(); 
   int pinValue1 = 0;  
   Blynk.syncVirtual(V4);
 }
}

BLYNK_WRITE(V5)
{
 servo.write(param.asInt());
}

void loop()
{
Blynk.run();
}
2

What does the Serial Monitor output show?

billd

3

connecting to {wifi_name}

4

before we go any further you need to do this . . .

Before creating the topic

  1. Search forum for similar topics
  2. Check http://docs.blynk.cc and http://help.blynk.cc/
  3. Add details :
    • Hardware model + communication type. For example: Arduino UNO with Ethernet Shield
    • Smartphone OS (iOS or Android) + version
    • Blynk server or local server
    • Blynk Library version
    • Add your sketch code. :point_up: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.


void loop()

billd

5

In that case, your ssid or WiFi password are probably incorrect.
Both are case sensitive.

Pete.

6

I ran your sketch on Wemos D1 Mini . . . connected to WiFi first time, no problem . . . check your SSID and PW

Also

Delete the 4444 or the sketch won’t compile.

billd

7

How can i check what is the correct ssid or wifi pass?

8

Your router is the best place to look, but you could compare the SSID to the one you use in your phone to connect to your WiFi.

Pete.

9

Ok, I will delete it.
But I don’t know how can i check what is the correct ssid or pw

10

that mean ssid and password should be as my router ?

11

Yes, your Wemos is connecting to your router’s WiFi to get internet access.

Pete.

12

Thanks for everyone the problem has been solved