warning: espcomm_sync failed error: espcomm_open failed error: espcomm_upload_mem failed error: espcomm_upload_mem failed

[NikhilRajNR]

Please fill the info fields, it helps to get you faster support ;)

if you have a stack dump decode it:
https://github.com/esp8266/Arduino/blob/master/doc/Troubleshooting/stack_dump.md

for better debug messages:
https://github.com/esp8266/Arduino/blob/master/doc/Troubleshooting/debugging.md

----------------------------- Remove above -----------------------------

Basic Infos

Hardware

Hardware: ESP8266
Core Version: ?2.1.0-rc2?

Description

Problem description

Settings in IDE

Module: Generic ESP8266 Module
Flash Size: 4MB/1MB
CPU Frequency: 80Mhz
Flash Mode: DIO
Flash Frequency: 40Mhz
Upload Using: DISBLE
Reset Method: BOTH ck / nodemcu

Sketch

#include <Arduino.h>

void setup() {

}

void loop() {

}

Debug Messages

messages here

[jyotirajsharma]

Did you get it working now? I am gettinh similar errors. How to resolve it ? Most of the forums are saying we need to use 3.3v external power supply but i am using arduino 3.3v power supply? Can tjis be the reason?

[NikhilRajNR]

arduino didn't supply that much of current that is required for ESP8266 to work. arduino o/p current is less than that .

[jyotirajsharma]

Was it flashed properly after external power supply ? I will also try then. And I also saw in some of the places, esp8266 should be flashed standalone using usb-ttl cable. I am connecting arduino to esp and directly uploading the code.
Wil following connections work ?
Arduion esp
Tx--------------rx
Rx--------------tx
Vcc-(3.3v)---------vcc(note: will change to ext.power
Vcc(3.3v)---------ch_pd note: will use ext.power
Gpio_0---------GNd note:this will enter flash mode
Gnd-------------gnd

[devyte]

@hackernikhilraj the espcomm open failed issue is documented. If what is in the docs doesn't work, you either have bad wiring, or a bad board.
Closing.