ESP8266 Community Forum

- Fri Feb 19, 2016 4:30 am #41430 What voltage do you have connected to the BME280? Is it the adafruit breakout board? If so the Vin pin needs something like 5V as its regulated down to 3.3v. If your trying to power it with 3.3v you might be able to back feed it through the 3vo pin but I haven't looked at the schematic to confirm that.

- Fri Feb 19, 2016 11:59 am #41470 @Gawan
Try my template library based on Adafruit BME280 lib + astuder template lib for BMP085 + my addition for altitude and relative pressure.
Included example configured for Your hardware (sda=0 and scl=2)

BME280t.zip

(3.85 KiB) Downloaded 1931 times

Serial output:

Code: Select allTemperature: 23.45C
Humidity:    29.55%
Pressure:    1000.09hPa
RelPress:    1018.06hPa
Altitude:    149.99m

My BME280 module look like this:
http://www.aliexpress.com/item/J34-Free-Shipping-Digital-Temperature-Humidity-Barometric-Pressure-Sensor-Module-Breakout-BME280/32499331827.html

Tested on supply voltage 3.3V and 5V without any additional pullup resistors on sda/scl

Attachments

MY GITHUB: https://github.com/reaper7/

SDM Energy Meter: https://github.com/reaper7/SDM_Energy_Meter
MLEDScroll (TM1640 led matrix): https://github.com/reaper7/MLEDScroll

- Sun Feb 21, 2016 6:48 am #41583 thanks a lot for your code reaper
it works perfectly fine !

- Sun Feb 21, 2016 10:46 am #41591 nice to hear

MY GITHUB: https://github.com/reaper7/

SDM Energy Meter: https://github.com/reaper7/SDM_Energy_Meter
MLEDScroll (TM1640 led matrix): https://github.com/reaper7/MLEDScroll