Error uploading to NodeMCU (ESP-8266)

[Callahan]

Hello!
I'm working with my ESP8266 (ESP-12e) wifi module for my Arduino Uno.

this is my error code

arduino:1.8.15 (Windows 10), board:"NodeMCU 1.0 (ESP-12E Module), 80 MHz, Flash, Disabled (new aborts on oom), Disabled, All SSL ciphers (most compatible), 32KB cache + 32KB IRAM (balanced), Use pgm_read macros for IRAM/PROGMEM, 4MB (FS:2MB OTA:~1019KB), 2, v2 Lower Memory, Disabled, None, Only Sketch, 115200"

Executable segment sizes:
ICACHE : 32768 - flash instruction cache
IROM : 258924 - code in flash (default or ICACHE_FLASH_ATTR)
IRAM : 28309 / 32768 - code in IRAM (IRAM_ATTR, ISRs...)
DATA : 1516 ) - initialized variables (global, static) in RAM/HEAP
RODATA : 1252 ) / 81920 - constants (global, static) in RAM/HEAP
BSS : 26624 ) - zeroed variables (global, static) in RAM/HEAP

스케치는 프로그램 저장 공간 290001 바이트(27%)를 사용. maximum 1044464 bytes.

전역 변수는 동적 메모리 29392바이트(35%)를 사용, 52528바이트의 지역변수가 남음. 최대는 81920 바이트.

esptool.py v3.0

Serial port COM4

Connecting......................................____Traceback (most recent call last):

File "C:\Users\alsrb\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\3.0.0/tools/upload.py", line 66, in <module>

esptool.main(cmdline)

File "C:/Users/alsrb/AppData/Local/Arduino15/packages/esp8266/hardware/esp8266/3.0.0/tools/esptool\esptool.py", line 3552, in main

esp.connect(args.before, args.connect_attempts)

File "C:/Users/alsrb/AppData/Local/Arduino15/packages/esp8266/hardware/esp8266/3.0.0/tools/esptool\esptool.py", line 529, in connect

raise FatalError('Failed to connect to %s: %s' % (self.CHIP_NAME, last_error))

esptool.FatalError: Failed to connect to ESP8266: Timed out waiting for packet header

_
selected serial port_
does not exist or the selected board does not connected

---

During the compiling it doesn't make an issue. But whenever I'm trying to send it to the Board, it makes the problem .
I can see the board is connected to COM4 on tool\serialport and I can see on . Device Manager\USB Serial Port (COM4)
Can anyone tell me what the problem is?

OS: Windows 10
IDE: Arduino 1.8.15
ESP8266 Board: NodeMcu Lua ESP8266 ESP-12E

[electrik]

Are you sure the serial port is not in use by another application?

[GRDL]

Not sure why you need esptool. I use the Arduino development environment with NodeMCU installed as a device and it connects to my ESP8266 just fine.

[Yveaux]

@Callahan i own a few wemos d1 minis that also just fail to be recognized during download. Do you have another esp that you can check out, just to rule out the board itself?

[jph1ll1ps]

struggling with similar issue.... nodemcu 1.0 (esp8266EX) - connected on com6, but back of board says connect at 9600.
serial monitor at 9600 can display correct messages at boot.. no AT command response, but then when i upload some simple code i get the following:

....
Features: WiFi
Crystal is 26MHz
MAC: ec:fa:bc:27:cc:12
Uploading stub...
Running stub...
Stub running...
Configuring flash size...
Traceback (most recent call last):
File "C:\Users\jph1l\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\3.0.1/tools/upload.py", line 66, in <module>
esptool.main(cmdline)
File "C:/Users/jph1l/AppData/Local/Arduino15/packages/esp8266/hardware/esp8266/3.0.1/tools/esptool\esptool.py", line 3599, in main
detect_flash_size(esp, args)
File "C:/Users/jph1l/AppData/Local/Arduino15/packages/esp8266/hardware/esp8266/3.0.1/tools/esptool\esptool.py", line 2848, in detect_flash_size
flash_id = esp.flash_id()
File "C:/Users/jph1l/AppData/Local/Arduino15/packages/esp8266/hardware/esp8266/3.0.1/tools/esptool\esptool.py", line 688, in flash_id
return self.run_spiflash_command(SPIFLASH_RDID, b"", 24)
File "C:/Users/jph1l/AppData/Local/Arduino15/packages/esp8266/hardware/esp8266/3.0.1/tools/esptool\esptool.py", line 948, in run_spiflash_command
old_spi_usr = self.read_reg(SPI_USR_REG)
File "C:/Users/jph1l/AppData/Local/Arduino15/packages/esp8266/hardware/esp8266/3.0.1/tools/esptool\esptool.py", line 562, in read_reg
val, data = self.command(self.ESP_READ_REG, struct.pack('<I', addr))
File "C:/Users/jph1l/AppData/Local/Arduino15/packages/esp8266/hardware/esp8266/3.0.1/tools/esptool\esptool.py", line 386, in command
p = self.read()
File "C:/Users/jph1l/AppData/Local/Arduino15/packages/esp8266/hardware/esp8266/3.0.1/tools/esptool\esptool.py", line 331, in read
return next(self._slip_reader)
File "C:/Users/jph1l/AppData/Local/Arduino15/packages/esp8266/hardware/esp8266/3.0.1/tools/esptool\esptool.py", line 2636, in slip_reader
raise FatalError("Timed out waiting for packet %s" % waiting_for)
esptool.FatalError: Timed out waiting for packet header
esptool.FatalError: Timed out waiting for packet header

any ideas - change usb cable, ports, confirmed the com not used elsewhere... any ideas?
FYI - the blue LED on the NodeMCU does flash once you start the upload.. flash a couple of times then stops.

Pressing the FLASH and holding down before the upload command or once it tries to connect etc there is no difference.