Here is a barometer, humidity, and temperature sensor shield for the RFduino / Simblee. It uses a Si7021 humidity sensor and a BMP180 barometric sensor.
Each contains a temperature sensor as well. Both sensors are on the I2C bus.
The I2C bus pullup resistors are optional as the pullups may be on other attached shields.
If the resistors are needed this shield uses through-hole technology so
anyone with minimum solder skills can add them.
The final result was the WeatherWear Beacon.
Implementing an Uribeacon is extremely easy to develop for. Uribeacons are detected by iOS and Android Bluetooth smart devices using the Physical Web APP. The Physical Web will pickup a website URL from the Uribeacon and display it's title and description in tabular form. When you click on the item you are taken to that web page. I have a simple example on the RFduino forum.
Other RFduino Projects