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Re: esptool.FatalError : Failed to connect to ESP8266

PostPosted: Mon Jan 04, 2021 2:24 am
by sedanur palta
hey.Did you find the answer to this problem? :roll:

Re: esptool.FatalError : Failed to connect to ESP8266

PostPosted: Mon Jan 11, 2021 8:54 am
by sedanur palta
TO CONNECT TO ESP8266 ARDUINO HARDWARE MUST HAVE RX = RX, TX = TX AND RESET PIN OF ARDUINO GND.LATER ;
1. PRESS THE RESET BUTTON
2. PRESS THE FLASH BUTTON
3.RELING THE RESET BUTTON
4. RELEASE THE FLASH BUTTON

Re: esptool.FatalError : Failed to connect to ESP8266

PostPosted: Sun May 02, 2021 10:53 am
by jsmwrench
I'm not sure if this will help everyone, but I was having the same issue (3 nano's, 2 NodeMCU's, and 1 Uno). I read a lot of different advice about how some pins being "pulled up" or "down" can interfere with uploading sketches, so I decided to remove ALL connections from my board except the USB and power/ground wires. In other words, any pin other than power or ground should be disconnected from any peripheral. Upload your sketch and after upload is complete and your board has reset, then plug in all of the peripherals. I did this and my sketch uploaded without any issues.

I hope this helps someone.
Ron.