SparkFun Weather Shield

Description

The Weather Shield is an easy to use Arduino shield that grants you access to barometric pressure, relative humidity, luminosity and temperature. There are also connections on this shield to optional sensors such as wind speed, direction, rain gauge and GPS for location and super accurate timing.

These Weather Shields utilize the HTU21D humidity, MPL3115A2 barometric pressure, and ALS-PT19 light sensors and relies on the HTU21D and MPL3115A2 Arduino libraries. Each shield comes with two unpopulated RJ11 connector spaces (for optional hook up of rain and wind sensors) and a 6-pin GPS connector (for optional hook up of a GP635T GPS module). Finally, each Weather Shield can operate from 3.3V up to 16V and has built in voltage regulators and signal translators.

Features

• Uses the HTU21D humidity sensor, MPL3115A2 barometric pressure sensor, and ALS-PT19 light sensor.
• Has connector for the GP-635T compact GPS module
• Has optional connectors for the SparkFun weather meters
• Weather shield can operate from 3V to 10V and has built in voltage regulators and signal translators
• Typical humidity accuracy of ±2%
• Typical pressure accuracy of ±50Pa
• Typical temperature accuracy of ±0.3C

Suggested reading:

• I²C Protocol
• Installing an Arduino library
• How to install Arduino shield headers
• What are pull-up resistors?
• HTU21D Humidity Sensor Hookup Guide
• MPL3115A2 Barometric Sensor Hookup Guide