Comments on: ESP32: BME680 Environmental Sensor using Arduino IDE (Gas, Pressure, Humidity, Temperature)

By: rjs

rjs — Sun, 18 Jan 2026 04:27:01 +0000

I enjoyed this tutorial. It fired up first time. I followed the instructions. very easy to follow.

Thank you.

By: Christian

Christian — Tue, 02 Sep 2025 12:53:57 +0000

Hi,
thank you for your quick respons, Sara! I copied the code again: same error message.
But Anthony`s idea did help, now it works properly! Great community, thumbs up!!!

By: Anthony Cheesebrough

Anthony Cheesebrough — Mon, 01 Sep 2025 16:11:33 +0000

In reply to Christian.

So I experienced the same error and resolved it by adding a return after the last else if…

else if(var == “GAS”){
return String(gasResistance);
}
return “0”;
}

const char index_

By: Sara Santos

Sara Santos — Fri, 29 Aug 2025 10:07:03 +0000

In reply to Christian.

Hi.
The code compiles just fine on my side.

Did you copy the whole code?

Did you install the required libraries? We’re using the libraries by ESP32Async. Older versions of the library might not work.

Regards,
Sara

By: Christian

Christian — Thu, 28 Aug 2025 13:58:30 +0000

Hi,
I copied the code as shown, but I get the following error message:

C:\Arduino\sketch_Wetterstation_mit_Webserver\sketch_Wetterstation_mit_Webserver.ino: In function ‘String processor(const String&)’:
C:Arduino\sketch_Wetterstation_mit_Webserver\sketch_Wetterstation_mit_Webserver.ino:72:1: error: control reaches end of non-void function [-Werror=return-type]
72 | }
| ^
cc1plus.exe: some warnings being treated as errors

What ist wrong? Can you help me?

Chris

By: JD

JD — Mon, 28 Jul 2025 21:26:41 +0000

Great Tutorial!

By: Renzo

Renzo — Sat, 20 Apr 2024 14:59:21 +0000

Hi,
great, but what is the meaning i.e for Gas = 88.37 KOhms?
is a good index?

Bye
Renzo

By: Vasy

Vasy — Sat, 12 Aug 2023 15:05:48 +0000

Hello, very nice work.I did this and it works great.But I want to know if you can still make me a library from BME680 with : BME 680, CCU-811 , MH-Z19 , SPS30 , SHT3x.
With ESP32-S3.
As it is with the web interface, plus a TFT SPI Display, would it be a lot of work?
I would pay for the code, as long as it is not so expensive.
It’s a hobby for me.
Thank You.

By: Sarah Dal

Sarah Dal — Thu, 30 Mar 2023 11:40:38 +0000

In reply to Sara Santos. Hi Sara, I realised there was a jumper on the back of the BME688 that changes the i2c address. I cut this jumper, and the module works with this code now!

By: Sara Santos

Sara Santos — Thu, 30 Mar 2023 11:22:59 +0000

In reply to Sarah Dal.

Hi.
I don’t think this library is compatible with the BME688.
This example is for the BME680.
Regards,
Sara