Adafruit BME280 Temperature Humidity Pressure Review

Not good for precision. temperature is far away. (a few degrees C) and takes 15 minutes to set up once the software starts reading the measurements. The same applies to relative humidity - the instrument readings differ by 17%. These readings are compared to an off-the-shelf temperature/pressure/humidity sensor (like the ones you buy at HomeGoods, Home Depot, or Walmart).

Adafruit redesigned the 2652 to use the STEMMA QT form factor. I was happy to find the old design here on Revain as I had an old app that used the old form factor. Although the picture clearly shows the old design and I've already bought it from this vendor, this time it came in a new form factor. The STEMMA QT design is a lot cheaper elsewhere so I overpaid just because I was looking for an older design.

The board is small and easy to wire. There are many free Python or Perl libraries on the internet that make it easy to read temperature, pressure, and humidity readings. Please note that pressure readings must be calibrated to your altitude. Output units are metric by default (as they should be) and easily converted using simple formulas. The only thing I didn't like about the fee was that Adafruit's cost was slightly higher on Revain (presumably to offset the shipping cost).

Installation was easy and the sensor is very small. I used 2 or 3 sensors of the same type from another company that died last year. I chose another company hoping for better results. The notable difference between this version and Adafruit is that the voltage supports 3.3V or 5V and SPI or I2C, while the previous boards I had only had 3.3V over I2C. I have an Arduino Yun that uses mostly 5V so previous sensors could die that quickly. (I didn't guess the voltage on the data line, but I still…

Ideal for weather station projects. I used the Adafruit library and got started right away. Tested SPI and I2C protocols, both working fine. I have used them with Arduino Uno, Mega and Mini Pro. The only problem I have (reason for 4 stars) is that it is very rare for all sensors to get stuck and report max readings. Resetting the power supply always fixes the problem. In general, temperature, humidity and pressure sensors are very accurate and with good accuracy. I am very pleased with the…

Installation was easy and the sensor is very small. I have used 2 or 3 sensors of the same type from another company that have died within the last year. I chose another company hoping for better results. The notable difference between this version and Adafruit is that the voltage supports 3.3V or 5V and SPI or I2C, while the previous boards I had only had 3.3V over I2C. I have an Arduino Yun that uses mostly 5V so previous sensors could die that quickly. (I didn't think to check the voltage on

Bought two and both have the same problem. The sensors work fine for days or even weeks, but eventually they fail and the only way to reset them is to turn off the power to the device. Each sensor is used for different applications with different Raspberry Pi and both have the same failure mode. In one application I'm using a Python script to get sensor data every few minutes and another application is using a Node Red node. Restarting the Raspberry Pi does not help, both devices must be…