Hi.
I think it must be an issue with the BME280 sensor.
Can you double-check the connections? To see if they are not reversed (the SDA and SCL).
Another thing, can you check the I2C address of your BME2800 sensor by running an I2C sketch?
https://randomnerdtutorials.com/solved-could-not-find-a-valid-bme280-sensor/ (don’t forget to change the I2C pins)
You may also have a “fake BME280”. I recommend taking a look at this: https://randomnerdtutorials.com/solved-could-not-find-a-valid-bme280-sensor/
 
Let me know your findings.
 
Regards,
Sara

Hi Sara,
I’ve checked connections carefully and am sure they are correct.
I have then run the I2C scanner check, and it returns “No I2C devices found”
So I reckon my BME280 sensor is faulty.  I have two of them, bought together some time ago, and they both show same result.
I will order new sensors from a reliable supplier.
Many thanks for your help,   Ken.

Hi again Sara,
Ignore my previous answer !   I forgot to change the I2C pins.
Having done that, the sensor is detected with address 0x76.
I can see that my sensors are BMP280, so they will not work with sketch as it is.
I have installed library  adafruit_BMP280  and tried editing the sketch for    3_1_Display_Temperature_Text_BME280 to be correct for the  BMP280, by changing all ocurrences of BME to BMP, but it does not compile.
Errors reported as follows:
C:\Users\kenar\ELECTRONICS\RandomNerd\Modules\My_Versions\3_1_Display_Temperature_Text_BME280\3_1_Display_Temperature_Text_BME280.ino: In function ‘void setup()’:
C:\Users\kenar\ELECTRONICS\RandomNerd\Modules\My_Versions\3_1_Display_Temperature_Text_BME280\3_1_Display_Temperature_Text_BME280.ino:160:28: error: invalid conversion from ‘TwoWire*’ to ‘uint8_t’ {aka ‘unsigned char’} [-fpermissive]
160 | status = bme.begin(0x76, &I2CBMP);
| ^~~~~~~
| TwoWire*
In file included from C:\Users\kenar\ELECTRONICS\RandomNerd\Modules\My_Versions\3_1_Display_Temperature_Text_BME280\3_1_Display_Temperature_Text_BME280.ino:29:
c:\Users\kenar\ELECTRONICS\Arduino\My Sketches\libraries\Adafruit_BMP280_Library/Adafruit_BMP280.h:187:53: note: initializing argument 2 of ‘bool Adafruit_BMP280::begin(uint8_t, uint8_t)’
187 | bool begin(uint8_t addr = BMP280_ADDRESS, uint8_t chipid = BMP280_CHIPID);
| ^exit status 1Compilation error: invalid conversion from ‘TwoWire*’ to ‘uint8_t’ {aka ‘unsigned char’} [-fpermissive]
 
Clearly my simplistic edit does not work.  Do you have a version of the modules that will work with BMP280, or would it be better for me to just buy a new BME280 ?
Thanks,  Ken.
 

Hi.
It is possible to modify the code to use the BMP280.
take a look at the BMP280 library and examples to see how to initialize the sensor and get data from it.  Then, you can try to modify our code.
 
 
I’m currently out of the office until the end of next week. But, I can take a look at that when I come back if you still need help.
 
Regards.
Sara

Hi.
Just to check out if you were able to fix this issue?
Regards,
Sara

Hi Sara,
Just received new BME280 module today.
All works properly now.
Thanks,   Ken.

Great.
I’ll mark this issue as resolved. If you need further help, you just need to open a new question in our forum.
Regards,
Sara

Thanks Sara.