BME280 without soldering

1

Hi everybody,

I tried to mount this BME280 from GoTronic on my ESP8266 together with a SDS011 :

https://www.gotronic.fr/art-capteur-de-pression-d-humidite-et-de-t-bme280-vma335-31197.htm

It looked quite nice as there was no soldering needed. There was just one connection which was different from your standard process : VCC → 3V3.

The station worked fine and recorded PM concentrations. However no temperature, humidity or pressure was given.

Does anyone knows why ?

Many thanks,

Regards,

Marie-Laure

2

It is exactly the same order VCC GND SCL SDA. It should work. Did you choose the right Sensors in the config page ?

Can we have the USB logs ?

3

Hi @pjg , at the beginning I unclicked DHT22 and replaced it by BME280 but since this time I cannot access the http://192.168.4.1/config anylonger. How to get the USB logs ? Thanks a lot

4

You have to access the config page through the “search” tab in the firmware flasher, with your computer connected to the same WiFi as the sensor. Then double-click on the line.

Or you connect to you router and look for the “DHCP client list” where you can see all the connected devices and their local IP adresse : 192.168.1. . Then you type this address in the browser.

In both case you will land on the green config page.

The USB log can be seen if you connect on USB and use the Arduino IDE for example. (9600 bauds / new line)

5

My USB log :

⸮⸮8S⸮airRohr: NRZ-2020-133/EN
mounting FS…
opened config file…
parsed json…
output debug text to displays…
Connecting to Freebox-7BF8DD
…SNTP synced: Sun Feb 13 07:37:47 2022

twoStageOTAUpdate
output debug text to displays…
.
WiFi connected, IP is: 192.168.1.28
Starting Webserver… 192.168.1.28

ChipId: 12952813

MAC Id: e8db84c5a4ed
Read SDS…:
Stopping SDS011…
Read DHT…
Send to :
sensor.community
Madavi.de

Auto-Update active…
⸮% ⸮9⸮⸮airRohr: NRZ-2020-133/EN
mounting FS…
opened config file…
parsed json…
output debug text to displays…
Connecting to Freebox-7BF8DD
…SNTP synced: Sun Feb 13 07:38:34 2022

twoStageOTAUpdate
output debug text to displays…
.
WiFi connected, IP is: 192.168.1.28
Starting Webserver… 192.168.1.28

ChipId: 12952813

MAC Id: e8db84c5a4ed
Read SDS…:
Stopping SDS011…
Read DHT…
Send to :
sensor.community
Madavi.de

Auto-Update active…
DHT11/DHT22 read failed
DHT11/DHT22 read failed
DHT11/DHT22 read failed
DHT11/DHT22 read failed
DHT11/DHT22 read failed

Sending to madavi.de:

Succeeded - api-rrd.madavi.de
Time for Sending (ms): 42

6

Your unit is still trying to read a DHT sensor.

  • open a browser window
  • type 192.168.1.28 (IP adress of your ESP8266)
  • the configuration menu should appear
  • choose configuration
  • choose sensors tab
  • change setting
  • SAVE the changes with the red button
1 Like
7

The BME280 is not selected. Reconfigure the sensor through the router.

8

Hello,

  • Yesterday I connected my sensor to the wifi without any issue.
  • I noticed the temperature and humidity were not appearing in Madavi
  • Then I went to the config page 192.168.4.1/config and changed the sensor type from DHT22 to BME280
  • Since this change, unfortunately I cannot access anylonger any adress starting with 192.1…
    I have no idea why…
  • I managed accessing my Freebox here : http://mafreebox.freebox.fr/ and I can see that my sensor is well connected to it
  • I would like to change the configuration but I cannot
    Any idea why ?

Thanks a lot,
Marie-Laure

9

The BME is NOT selected.
If you access the router you can See the local IP adress. Connect to it.

Send me some screenshots I can t do anything without them.

Or use the flasher

10

I have tried using the flasher and I think there is something missing here :slight_smile:
image

11

Do I need to download and execute this ? Is it safe ?

image
image1265×637 190 KB

12

Your ESP8266 is sending data from the SDS011 so you do not need to flash the firmware again.
Did you try the steps in my previous post?

13

Hi @Jan , thank you so much for your input. It worked ! Now I have my temperature, pressure and humidity. However I don’t see any particle matter measurement anylonger. I will wait to see it this evolve in the next hour but right now I don’t see anything on madavi :frowning:

image

14

Lest news: I switched off and on my sensor again and now everything is ok ! Thanks a lot for your patience !

15

Onglet « rechercher »!

16

Glad you succeeded @MarieLaureAix

17

Yes, it is really cool to avoid soldering (I don’t have this equiment :slight_smile: