ESP8266 from different batches - one works, the other does not detect the network

demsy wrote:

Only that now it doesn't want to "talk" to me with putty.

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Do you have the speed set to 9600 in putty?

khoam wrote:

demsy wrote:

It's just that now it doesn't want to "talk" to me with putty.

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Do you have the speed set to 9600 in putty?

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115200. but I won't be acting further until tomorrow

uploaded again

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with speed 115200



to test pytty to see if it works i shorted RX and TX for a test so it works, in other words i suspect i have uploaded something wrong to esp

I have also connected a fresh ESP.... and there is the same effect

demsy wrote:

I enabled the putty at 115200 I reset the esp and it only pops up the following

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Then try setting the putty to 9600 and use that esp you uploaded the AT firmware on.

same effect
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I do not use putty, but moserial - while the settings (working) should be as follows:

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With that said, try with 115 200, 57 600 or 9600.

or maybe I set something wrong when uploading

I was able to upload a soft that works with AT commands

The module works correctly with the ESPEasy binary version: ESP_Easy_mega-20190508_normal_ESP8266_4M.bin (attached):
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As far as the AT firmware from Espressif is concerned, the module works correctly with version 1.6.2, but no longer with version 1.7.0.

I'm the one who agonised for so long and didn't check another packet. Any devices with wifi detected by SSID esp?
I will check this afternoon

demsy wrote:

Any devices with wifi detect SSID esp?

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No problem.

Added after 1 [minute]:

demsy wrote:

I'm the one who agonised for so long and didn't check another package

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This version I uploaded is newer than what you stated in your first email.

khoam wrote:

demsy wrote:

Any devices with wifi detect SSID esp?

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No problem.

Added after 1 [minute]:

demsy wrote:

I was the one who agonised for so long and didn't check another package

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This version I uploaded is newer than the one you provided in your first email.

I can see by the date....

I have loaded the soft of 25.04.2019 such as you wrote about in the first post.
Specifically it is the file ESP_Easy_mega-20190425_normal_ESP8266_4M.bin .
Appears to be OK .
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I then repeated the test with the file ESP_Easy_mega-20190425_normal_ESP8266_1M.bin , which is exactly what you wrote about in the first post. The result is also positive:
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khoam wrote:

I uploaded the soft of 25.04.2019 such as you wrote about in the first post.
Specifically it is the file ESP_Easy_mega-20190425_normal_ESP8266_4M.bin .
Appears to be OK .

Code: Dos

Log in, to see the code

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I then repeated the test with the file ESP_Easy_mega-20190425_normal_ESP8266_1M.bin , which is exactly what you wrote about in the first post. The result is also positive:

Code: Dos

Log in, to see the code

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...and with which program do you upload?
The same as before on this second sofet

I work on Linux, so I use esptool directly. I uploaded the last soft with the command:
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Under windows$ you can also use esptool directly and in fact ESPEasyUploaderMega uses esptool, but you can't see that.

Added after 2 [minutes]:

demsy wrote:

Shortcuts on this second sofet is the same as before

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You should use the 4M version for these boards.

uploading version 4M

Added after 3 [minutes]:

One other thing I can think of is that maybe I have something wrongly connected


Added after 4 [minutes]:

My diagram



Added after 17 [hours] 58 [minutes]:

fellow khoam do you have any ideas?
I have already tried on another computer and on another adapter
-first I clear the memory before each program upload
-then upload the program
-enable putty
-enter wifiscan
-and I get no network


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For testing, I have now tried uploading espeasy myself and it won't connect.
For that on Tasmota it connects without problems. You might want to try:
https://github.com/arendst/Sonoff-Tasmota/releases/download/v6.5.0/sonoff-PL.bin
After saving the flash you should see the network sonoff-xxxx where xxxx are the numbers from the mac address
address to connect 192.168.4.1 with no password.
Once connected enter the ssid and password of your router and save after restart scan your LAN and there should be a new device named sonoff

xury wrote:

For tests I have now tried to upload espeasy myself and it won't connect.
For that on Tasmota it connects without problems. You might want to try:
https://github.com/arendst/Sonoff-Tasmota/releases/download/v6.5.0/sonoff-PL.bin
After saving the flash you should see the network sonoff-xxxx where xxxx are the numbers from the mac address
address to connect 192.168.4.1 with no password.
Once connected enter the ssid and password of your router and save after reboot scan your LAN and there should be a new device named sonoff

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I tried early on but uploaded again, unfortunately there are the same symptoms as in espeasy. i.e. I don't see the SSID named sonoff.....

demsy wrote:

One other thing I can think of is that maybe I have something wired wrong

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GPIO0 and GPIO2 should be connected via 10k resistors to the power supply.

demsy wrote:

-and I am popping up with no network

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Specifically that it doesn't find the network, but the rest of the messages are OK, so it might as well be that those networks could be unreachable at that location.
Can you see the ESP_Easy_0 network on your smartphone, for example?

So it must be a hardware error.

Also check that the antenna on the ESP-12 board is not shielded, e.g. by the laminate layer in your adapter.

khoam wrote:

demsy wrote:

One other thing I can think of is that maybe I have something wired wrong

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GPIO0 and GPIO2 should be connected via 10k resistors to the power supply.

demsy wrote:

-and I am popping up no network

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Specifically that it doesn't find the network, but the rest of the messages are OK, so it might as well be that those networks could be unreachable at that location.
Can you see the ESP_Easy_0 network on a smartphone for example?

They put resistors under GPIO0 and GPIO2 the chip does not want to program.
From another supplier on this socket I have ESPs working

Added after 2 [minutes]:

demsy wrote:

-and I am popping up no network

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Quote:

Specifically that it doesn't find the network, but the rest of the messages are OK, so it might as well be that those networks could be unreachable at that location.
Can you see the ESP_Easy_0 network on a smartphone for example?

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From where I am programming to the router I have 10m and there is only 1 wall. On my phone the network with ESP_Easy_0 is not displayed.

demsy wrote:

Insert resistors under GPIO0 and GPIO2 layout does not want to program.

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This is more of a "peculiarity" of the programmer not shorting GPIO0 to ground during firmware loading. Try plugging in these resistors for a while and restarting the ESP.

with resistor connected to GPIO0 no change

demsy wrote:

with the resistor connected under GPIO0 no change

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GPIO2 too.
I have just connected to one of your boards, with the distance between the computer and ESP being less than one metre:

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khoam wrote:

demsy wrote:

with the resistor connected under GPIO0 no change

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GPIO2 too.
I have just connected to one of your boards, with the distance between the computer and ESP being less than one metre:

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I have connected GPIO0 and GPIO2 in 3 different ways , together, separately and individually

Try a possible close check to see if you can see the ESP_Easy_0 network from your computer. It may just be that the antennas on the boards themselves are faulty.

I have tested the three boards you provided me with.
One of them, where there is no AI-THINKER logo but there is an Espressif logo works 100% correctly. It has the firmware ESP_Easy_mega-20190511_normal_ESP8266_4M.bin uploaded to it.

In the other two with the AI-THINKER logo, I have not been able to get the WiFi interface to work so that the module scans WiFi networks or is visible, as an AP. In addition to the ESPEasy firmware (several different versions, including archived versions from 2015/16), I also tested with the ESPurna and Tasmota firmware. Without success. I then uploaded sample programs with Arduino HAL and ESP-IDF itself - also WiFi is not visible.

Generally the modules behave as if they have no antenna hooked up. They don't report any errors with the WiFi stack, they just don't detect anything on the WiFi network and remain invisible themselves too.

AI-THINKER stopped producing these modules over 3 years ago, so I don't know if these are clones or some stock "sweeps". I have found traces on several mailing lists of fake ESP-12 modules with the AI-THINKER logo and problems with SPIFFS support in these modules. Perhaps this is the case.

In the picture below, the "hero" of the tests:

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khoam wrote:

I have tested the three boards you provided me with.
One of them, where there is no AI-THINKER logo but there is an Espressif logo works 100% correctly. It has the firmware ESP_Easy_mega-20190511_normal_ESP8266_4M.bin uploaded to it.

In the other two with the AI-THINKER logo, I have not been able to get the WiFi interface to work so that the module scans WiFi networks or is visible, as an AP. In addition to the ESPEasy firmware (several different versions, including archived versions from 2015/16), I also tested with the ESPurna and Tasmota firmware. Without success. I then uploaded sample programs with Arduino HAL and ESP-IDF itself - also WiFi is not visible.

Generally the modules behave as if they have no antenna hooked up. They don't report any errors with the WiFi stack, they just don't detect anything on the WiFi network and remain invisible themselves too.

AI-THINKER stopped producing these modules over 3 years ago, so I don't know if these are clones or some stock "sweeps". I have found traces on several mailing lists of fake ESP-12 modules with the AI-THINKER logo and problems with SPIFFS support in these modules. Perhaps this is the case.

In the picture below, the "hero" of the tests:

So I thought there was something wrong with these modules,so I consider the topic closed,many thanks for your help on the topic especially to colleague "khoam".The modules you have you can keep them and I am the proverbial beer for you anyway. Once again many thanks. Greetings