SPECIFICATIONS

Brand Name: DIYmalls

High-concerned chemical: none

Origin: Mainland China

10PCS BME280 5V Digital Sensor Temperature Humidity Barometric Pressure Sensor Module I2C SPI 1.8-5V
Descripton:
Voltage:3-5V
The BME280 is a great new chip which was originally designed for the next generation of smartphones. It is made up of a very accurate pressure sensor and an associated temperature sensor which helps calibrate the pressure readings. And just for fun they threw in a pretty solid humidity sensor in there as well!

So with an I2C connection you have access to enough weather data to make some pretty good predictions for your local area. Or you can just use the pressure sensor with it's abililty to discern the difference in 7.5cm in altitude. The chip contains smarts to smooth out measurements (since it's so sensitive you don't want slamming doors to mess with your pressure readings, for example) which are fully under your control.

Connection:

GY-BME280 arduino pro mini
vin----------------vcc
GND--------------GND
SCL----------------A5
SDA----------------A4

Package Included:
5/10 X BME280 Pressure Temperature Sensor

FAQ
Q: Does this sensor include pull-up resistors between vcc/sda and vcc/sdl or will i need to add these to my circuit? thanks.
A: It has pull-up resistors, there is no need to add extra