A fatal esptool.py error occurred: Failed to connect to ESP8266: Timed out waiting for packet header

Projects Programming
1

. Variables and constants in RAM (global, static), used 28392 / 80192 bytes (35%)
║ SEGMENT BYTES DESCRIPTION
╠══ DATA 1496 initialized variables
╠══ RODATA 1144 constants
╚══ BSS 25752 zeroed variables
. Instruction RAM (IRAM_ATTR, ICACHE_RAM_ATTR), used 60267 / 65536 bytes (91%)
║ SEGMENT BYTES DESCRIPTION
╠══ ICACHE 32768 reserved space for flash instruction cache
╚══ IRAM 27499 code in IRAM
. Code in flash (default, ICACHE_FLASH_ATTR), used 236340 / 1048576 bytes (22%)
║ SEGMENT BYTES DESCRIPTION
╚══ IROM 236340 code in flash
esptool.py v3.0
Serial port COM6
Connecting......................................_____
A fatal esptool.py error occurred: Failed to connect to ESP8266: Timed out waiting for packet header

I'm getting crazy with this error, can someone help me out? I'm really desperate, this is a school project that defines if i get the 12th grade degree or stay with the 9th.

2

which particular ESP8266 board do you have? give a link or a photo

are you sure you have the correct COM port?
if you run the Device Manager does COM port appear/disappear as plug/unplug the microcontroller?
if not do you get any message, e.g. "USB device not recognized"
disconnect everything (sensors/relays etc) from the board
try a different USB port
try a different USB cable (some are charge only)

try EN / BOOT/ RST button combinations

if you try a different board do you get the same problem?

3

I had a security fix for my uefi yesterday. After installing this I get the same message:

. Variables and constants in RAM (global, static), used 28104 / 80192 bytes (35%)
║ SEGMENT BYTES DESCRIPTION
╠══ DATA 1496 initialized variables
╠══ RODATA 920 constants
╚══ BSS 25688 zeroed variables
. Instruction RAM (IRAM_ATTR, ICACHE_RAM_ATTR), used 59667 / 65536 bytes (91%)
║ SEGMENT BYTES DESCRIPTION
╠══ ICACHE 32768 reserved space for flash instruction cache
╚══ IRAM 26899 code in IRAM
. Code in flash (default, ICACHE_FLASH_ATTR), used 232148 / 1048576 bytes (22%)
║ SEGMENT BYTES DESCRIPTION
╚══ IROM 232148 code in flash
esptool.py v3.0
Serial port /dev/ttyUSB0
Connecting......................................_____
A fatal esptool.py error occurred: Failed to connect to ESP8266: Timed out waiting for packet header

I have installed the IDE 2.3.2
Work with a NodeMCU 1.0 (ESP 12E)

Is there a better log mode, to see more detailed what happens?

Thx, Harald

4

Sorry for asking. Meanwhile I checked that the connected motor shield seems to be somehow corrupted. After disconnecting this, everthing works fine :slight_smile:

5

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