Getting warning

hey gys i’m getting this warning during my project with arduino and blynk
warning: espcomm_sync failed
error: espcomm_open failed
error: espcomm_upload_mem failed
error: espcomm_upload_mem failed

i m using ESP8266-01 as my wifi modual

my connection like
Arduino<—> ESP8266-01
3.3VCC<---->VCC and CH_PD


i also change my board to generic ESP8266 Modual

and running blynk example “ESP8266 Standalone”

plz give me solution gys…

You need to connect GPIO 0 to ground while booting in order for it to enter flashing mode.

i try this suggestion but still getting this error

This is your problem if you are using an Arduino you are not in standalone mode.
You have also made it difficult for yourself because you have now removed the required AT firmware by flashing the wrong sketch.
You need to reflash the AT firmware and use the ESP8266_Shield example.

Not the easiest to get working.

I suggest purchasing a cheap WeMos/NodeMCU style ESP8266

hey bro i know that and i already own it but according to my project definition i must use arduino UNO so if there is any way for this please give me info …
thank you in advance

@Dhruvish_Panchal did you fix your mistakes which I highlighted in my last post?

yes i did same process with ESP8266_Shield example.

but i’m getting this error

C:\Users\dhruv\Documents\Arduino\libraries\Blynk\examples\Boards_WiFi\ESP8266_Shield\ESP8266_Shield.ino:30:25: fatal error: ESP8266_Lib.h: No such file or directory

#include <ESP8266_Lib.h>


compilation terminated.

exit status 1
Error compiling for board Arduino/Genuino Uno.

now what can i do???

@Dhruvish_Panchal you could try installing the libraries as per the docs i.e. manually not through the IDE.

Have you re-flashed the ESP with the AT firmware?

yes i reflashed it with AI-v0.9.5.0 AT Firmware this

You just need to install the libraries now and if you are very lucky you will be good to go.

I say very lucky because from my experience there are a thousand and one (slight exaggeration) things that regularly go wrong with the set up you are attempting.

@Jamin was just trying to prevent your suffering by suggesting the Blynk plug and play system of a “WeMos/NodeMCU style ESP8266”.

I am very interested to know why your project definition states you must use an Uno for an IOT project. Don’t forget the ESP’s will allow you to remotely update the firmware if and when Blynk make a significant change, and this will not generally be possible with an Arduino.