I have a problem connecting to the ESP-8266. Everything connected according to this diagram (step 3). Installed esptool. uploaded new firmware: . . I then started ESPlorer, unfortunately I can't connect to the chip (I have the same in minicom - I can't type anything in the console) . Anyone have...

. What is this mysterious firmware? I couldn't find any information about it on that page you linked to, and the name esp8266-20190529-v1.11.bin doesn't say much.

Have you checked that after uploading this firmware and rebooting the ESP, the WiFi network named MicroPython-xxxxxx is visible?

It should be visible , if the MicroPython firmware is correctly uploaded. What model of ESP8266 do you have?

I uploaded the file again - the result is the same ( no network, RX/TX does not work). I bought the module some time ago, on the casing it says ESP8266MOD. Module itself looks like yes , it is soldered to yes board. I would add that after uploading the software, no LEDs light up on it (not sure if they should). Maybe there's something wrong with this connection - I've seen different variations on the internet.

I have uploaded this firmware to the ESP-12 you pointed out in post #3 and there are no problems. Code: PythonLog in, to see the code . You can also see the default WiFi network. Do you already have GPIO 0 disconnected from ground after uploading the software?

I have uploaded the firmware. I only left the VCC, GND, and VCC to CH_PD connections and nothing.

RST, GPIO 0 and GPIO 2 should also be 'pulled up' with a 10k resistor to the power supply. GPIO 15 is safe to connect with a 10k resistor to ground. .

Failed connection to ESP-8266 after uploading new firmware

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#1 18256913 03 Nov 2019 21:46

lexom lexom

Level 12

Post #1

18256913 03 Nov 2019 21:46

I have a problem connecting to the ESP-8266.
Everything connected according to this diagram (step 3).

Installed esptool. uploaded new firmware:

sudo esptool.py --port /dev/ttyUSB0 erase_flash
esptool.py v2.8
Serial port /dev/ttyUSB0
Connecting....
Detecting chip type... ESP8266
Chip is ESP8266EX
Features: WiFi
Crystal is 26MHz
Uploading stub...
Running stub...
Stub running...
Erasing flash (this may take a while)...
Chip erase completed successfully in 9.9s
Hard resetting via RTS pin...

sudo esptool.py --port /dev/ttyUSB0 write_flash -fm qio 0x00000 /home/pawel/Pobrane/esp8266-20190529-v1.11.bin
esptool.py v2.8
Serial port /dev/ttyUSB0
Connecting....
Detecting chip type... ESP8266
Chip is ESP8266EX
Features: WiFi
Crystal is 26MHz
Uploading stub...
Running stub...
Stub running...
Configuring flash size...
Auto-detected Flash size: 4MB
Flash params set to 0x0040
Compressed 617880 bytes to 402086...
Wrote 617880 bytes (402086 compressed) at 0x00000000 in 35.5 seconds (effective 139.1 kbit/s)...
Hash of data verified.

Leaving...
Hard resetting via RTS pin...

.

I then started ESPlorer, unfortunately I can't connect to the chip (I have the same in minicom - I can't type anything in the console)

.
Anyone have any idea what the problem could be ?

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#2 18257100 03 Nov 2019 23:13

khoam khoam

Level 42

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Post #2
18257100 03 Nov 2019 23:13

lexom wrote:
uploaded new firmware
.
What is this mysterious firmware? I couldn't find any information about it on that page you linked to, and the name "esp8266-20190529-v1.11.bin" doesn't say much.
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#3 18257121 03 Nov 2019 23:27

lexom lexom

Level 12

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Post #3
18257121 03 Nov 2019 23:27

I uploaded from this page.
#4 18257127 03 Nov 2019 23:31

khoam khoam

Level 42

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Post #4
18257127 03 Nov 2019 23:31

Have you checked that after uploading this firmware and rebooting the ESP, the WiFi network named "MicroPython-xxxxxx" is visible?
#5 18257139 03 Nov 2019 23:36

lexom lexom

Level 12

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Post #5
18257139 03 Nov 2019 23:36

I have no such network.
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#6 18257143 03 Nov 2019 23:41

khoam khoam

Level 42

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Post #6
18257143 03 Nov 2019 23:41

It should be visible , if the MicroPython firmware is correctly uploaded.
http://docs.micropython.org/en/latest/esp8266/tutorial/intro.html#wifi
What model of ESP8266 do you have?
#7 18257158 04 Nov 2019 00:00

lexom lexom

Level 12

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Post #7
18257158 04 Nov 2019 00:00

I uploaded the file again - the result is the same ( no network, RX/TX does not work).
I bought the module some time ago, on the casing it says ESP8266MOD.
Module itself looks like yes , it is soldered to yes board.
I would add that after uploading the software, no LEDs light up on it (not sure if they should).
Maybe there's something wrong with this connection - I've seen different variations on the internet.
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#8 18258646 04 Nov 2019 20:37

khoam khoam

Level 42

» | Helpful post? (0)

Post #8
18258646 04 Nov 2019 20:37

I have uploaded this firmware to the ESP-12 you pointed out in post #3 and there are no problems.
Code: Python
Log in, to see the code
.
You can also see the default WiFi network.

Do you already have GPIO 0 disconnected from ground after uploading the software?
#9 18260789 05 Nov 2019 22:11

lexom lexom

Level 12

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Post #9
18260789 05 Nov 2019 22:11

I have uploaded the firmware.
I only left the VCC, GND, and VCC to CH_PD connections and nothing.
#10 18260860 05 Nov 2019 22:44

khoam khoam

Level 42

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Post #10
18260860 05 Nov 2019 22:44

RST, GPIO 0 and GPIO 2 should also be 'pulled up' with a 10k resistor to the power supply. GPIO 15 is safe to connect with a 10k resistor to ground.

.
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Topic summary

The discussion revolves around a user's inability to connect to an ESP-8266 module after uploading new firmware (esp8266-20190529-v1.11.bin) using esptool. The user reports that the expected WiFi network "MicroPython-xxxxxx" is not visible post-upload, and no LEDs light up on the module. Other participants suggest checking the wiring, ensuring GPIO 0 is disconnected from ground during the upload, and pulling up GPIO pins with resistors. The user confirms the module is labeled ESP8266MOD and has attempted re-uploading the firmware without success.
Summary generated by the language model.

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Failed connection to ESP-8266 after uploading new firmware

Failed connection to ESP-8266 after uploading new firmware

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