ST SHILLEHTEK BME280 3.3V Pre-Soldered High Precision Altimeter Atmospheric Pressure, Temperature, and Humidity GY-BME280-3.3 Sensor Module for Raspberry Pi, Arduino, and Other MicroControllers

I chose to pay the high price for this sensor as it is advertised as pre-soldered, in the description! It is not, do not buy!

These Bosch environmental sensors are great, pretty accurate, and easy to use. It's within half a degree of a calibrated thermometer and the pressure readings jive with other barometers. The humidity is a bit less accurate, or at least disagrees by 2-3% with a professional hygrometer, but that's not a very big deal and anyway it can be accounted for in software. Oversampling and IIR filtering support, easy to use with the Adafruit python library or any of several others. Pre-soldered for no-fuss prototyping or assembly. I'm using this with a Pico W microcontroller running ESPHome, which has full support for the BME280; it sends the data to Home Assistant. Works great!

This is a really nice sensor. Worked out of the bag and has been stable. At first, I was concerned that the pressure readings were off. So I contacted SHILLEHTEK and was reminded that, living at 4.100', I needed to adjust the output because it was calibrated for sea level. I was surprised at how much difference that makes. Adjusting for my altitude, the readings are now spot on. So if you're not a sea level, Google altitude corrections and make the adjustment in whatever bme280 Python software library you're using. BTW - the support was quick and detailed - well done!

Seems to be a decent sensor. I hope it's an actual Bosch unit and not a knock-off, but I have my doubts.One thing I did find, the board I got was set to be the second sensor on a wire. It works fine as an only-sensor, but you need to specify the 'second' address because that's what this device is set to.Like this in Arduino ide:mySensorB.setI2CAddress(0x76); //Connect to a second sensorRun the Example2_I2CAddress program out of the Sparkfun library.

It worked great with no issues.