Calibrate BME280
Posted: Tue Dec 05, 2017 1:13 amI have a project requiring 3 BME280 sensors running together. I will be connecting the sensors so they are located remote to the ESP8266 and measuring temperature and humidity. I need to calibrate the sensors so that they measure the same when next to each other so that when I move them to their remote location they will measure actual differences. In the first version of the project using DHT11's, I simply determined an average temperature and humidity for the different sensors and applied a delta to each. This is not accurate as I used a single value not anything scaled by temp or humidity. I know the BME280 can be calibrated but I haven't found any Arduino code that shows how to actually do it nor what to use as the accurate value to reference (I'm assuming I'd just use the average of the 3 again).