ESP8266 Community Forum

Just like a lot of other in this forum, I'm also getting the following when I'm trying to upload the Blink sketch from the Arduino IDE.



I have read a lot of other relevant posts and tried everything they suggest but no luck...

- I have used 4 different USB-to-serial converters (including the Arduino board), but all of them give the same error

- I checked the pin connections and everything seems to be correct. I'm connecting GPIO0 to GND before I upload and I also connected RST to GND (pulse) before upload. CH_PD, VCC, GPIO2 are connected to 3.3V.

- when the module isn't in "upload mode" (i.e. GPIO connected to 3.3V) then I can connect to it perfectly using a serial monitor, issue AT commands and get a response.

- I have tried a bunch of different IDE versions, from 1.6.5 to the latest 1.6.11.

- I downloaded and ran the esptool (1.2-dev) and when I try to read the flash ID with this command



I get the error "A fatal error occurred: Failed to connect to ESP8266"

Any ideas? I would say that the I/O of the chip is burnt but since I can issue AT commands, for example, I don't think that's the problem. I must be missing something pretty stupid!

Thanks!

PS: I'm using the ESP-01 chip that is black and has the "Ai cloud inside" printed on it. Also I'm using Debian Linux 8.5.

Hello again guys,

If any of you have used the chip I'm using (ESP01) can you please post the configuration you're using the Arduino IDE? I'm using:

Generic ESP8266 module, 80 MHz, 40 MHz, DIO, 115200, 1M (64K SPIFFS), ck, Disabled, None.

Of course, I've changed some of these settings but maybe I haven't tried the right combination yet!

Thanks

One more thing that just occurred to me!

Do I have to install a new firmware in order to upload the Blink program?

Currently, when I give AT+GMR I get the following output:



Thanks!

After reading and experimenting a lot, I discovered that the problem was that I soldered the GPIO0 and GPIO2 pins together, when making the breadboard-friendly breakout! As soon as I de-soldered the connection, it worked perfectly!