# ESP8266 not stable
**URL:** https://forum.sensor.community/t/esp8266-not-stable/1437
**Category:** Uncategorized
**Created:** [June 26, 2022, 10:45am UTC](https://forum.sensor.community/t/esp8266-not-stable/1437 "2022-06-26T10:45:52Z")
**Posts on this page:** 9
**Page:** 1
### Author:  [@postbantania](https://forum.sensor.community/u/postbantania)
#### Post date: [June 26, 2022, 10:45am UTC](https://forum.sensor.community/t/esp8266-not-stable/1437/1 "2022-06-26T10:45:52Z")
I have had a new sensor kit SDS011/BME280 sensor ID 5423193 for a few weeks
It is very annoying that this system fails regularly, i.e. it is not stable.
However, the WLAN connection remains active.
I have already exchanged the Node MCU ESP8266 and flashed it again, unfortunately without success.
What else can I do to make this system stable?
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### Author:  [@pjg](https://forum.sensor.community/u/pjg)
#### Post date: [June 26, 2022, 9:24pm UTC](https://forum.sensor.community/t/esp8266-not-stable/1437/2 "2022-06-26T21:24:16Z")
Just get a better USB 5V powersupply with at least 1.5A.
The symptoms are those a weak PSU.
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### Author:  [@postbantania](https://forum.sensor.community/u/postbantania)
#### Post date: [June 27, 2022, 12:00pm UTC](https://forum.sensor.community/t/esp8266-not-stable/1437/3 "2022-06-27T12:00:27Z")
Thank you for responding,
After connecting to USB 5V 3A power supply the same symptom… still not stable…
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### Author:  [@pjg](https://forum.sensor.community/u/pjg)
#### Post date: [June 27, 2022, 2:00pm UTC](https://forum.sensor.community/t/esp8266-not-stable/1437/4 "2022-06-27T14:00:34Z")
Is there the wps Option on the Router ?
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### Author:  [@pjg](https://forum.sensor.community/u/pjg)
#### Post date: [June 27, 2022, 2:01pm UTC](https://forum.sensor.community/t/esp8266-not-stable/1437/5 "2022-06-27T14:01:43Z")
Can you send me the serial log ? Plug a usb câble and read the serial with the arduino ide or screen in bash
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### Author:  [@postbantania](https://forum.sensor.community/u/postbantania)
#### Post date: [June 27, 2022, 3:24pm UTC](https://forum.sensor.community/t/esp8266-not-stable/1437/6 "2022-06-27T15:24:50Z")
Hello,
I just flashed the ESP8266 again and oplaced a node of the mesh wifi system near this.
I will try this first.
Router has a wps button.
This is the device status after flashing.
|Firmware version|NRZ-2020-133
ST:1
SDK:2.2.2-dev(38a443e)
Core:2.7.3-3-g2843a5ac=20703003
lwIP:STABLE-2\_1\_2\_RELEASE
glue:1.2-30-g92add50
BearSSL:5c771be|
|Free Memory|31632|
|Heap Fragmentation|2 %|
|Last OTA|6 min, 58s|
|NTP Sync|1|
|NTP Info|86.85.103.243 ([0.pool.ntp.org](http://0.pool.ntp.org)) reachable: Yes|
|Time (UTC)|Mon Jun 27 15:23:49 2022|
|Uptime|6 min, 58s|
|Reset Reason|External System|
||
|SDS011|21-01-12(ecf3)|
||
| **only errors** |
|WiFi|0/-47/0|
|OTA Return|200|
|SDS011|0|
||
|Number of measurements|2|
|Time spent uploading|2301 ms|
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### Author:  [@pjg](https://forum.sensor.community/u/pjg)
#### Post date: [June 27, 2022, 4:27pm UTC](https://forum.sensor.community/t/esp8266-not-stable/1437/7 "2022-06-27T16:27:59Z")
This looks normal. Can you get the following logs?
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### Author:  [@postbantania](https://forum.sensor.community/u/postbantania)
#### Post date: [June 28, 2022, 1:58pm UTC](https://forum.sensor.community/t/esp8266-not-stable/1437/8 "2022-06-28T13:58:21Z")
I placed a router mesh node near the ESP8266 and the problem seems to be solved.
The WiFi signal is now 100% and connection seems to be stable now.
Many thanks for your help.
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### Author:  [@postbantania](https://forum.sensor.community/u/postbantania)
#### Post date: [August 4, 2022, 7:58am UTC](https://forum.sensor.community/t/esp8266-not-stable/1437/9 "2022-08-04T07:58:18Z")
Now something strange occurs. I can see my sensor on [PM sensors - Grafana (madavi.de)](https://api-rrd.madavi.de/grafana/d/GUaL5aZMz/pm-sensors?orgId=1&var-chipID=esp8266-5423193&var-type=BME280&var-query0=sensors)
but I can’t login with my IP adres 192.168.1.10 (check IP adres on my router)