DEV-13956 datasheet(2/26 Pages) SPARKFUN

2 / 26 page

• Installing an Arduino library

• What is an Arduino Shield

• What are pull-up resistors?

• Si7021 Temperature and Humidity Sensor Hookup Guide

• MPL3115A2 Barometric Sensor Hookup Guide

Hooking It Up

To get up and running with the Weather Shield you’ll need the following

parts:

• Arduino, RedBoard, or other compatible board

• Arduino Stackable Headers

• Optional: GP-735 GPS Module and 1.75" mating cable

• Optional: Two RJ11 6-pin Connectors

• Optional: Weather Meters

Shield on a RedBoard with optional weather meter (‘W'ind and 'R'ain

cables) and GPS attached

Assembly

Solder the stackable headers onto the shield, and insert the shield into your

Arduino. You are welcome to solder in the RJ11 connectors to the top of

the board as well. If you have the GP-735 GPS module, don’t worry about

attaching it at this time, we’ll get to GPS later.

Example Firmware - Basic

Before uploading code to your Arduino with the Weather Shield

attached, make sure the GPS UART switch is in the SW-UART

position. Having the switch in the opposite position connects the GPS

lines to the USB lines and may cause errors while uploading.

Using the Weather Shield example in the Arduino IDE relies on the Si7021

and MPL3115A2 libraries. As of Arduino v1.6.x you can download the

libraries through the Arduino Library Manager. Search for and install

“SparkFun MPL3115” and “SparkFun Si7021”.

For more information, see our tutorial on using the Arduino library manager.

For all the latest Arduino Weather Shield code, check out the Github

Repository:

WEATHER SHI ELD GI THUB REPO

Page 2 of 26

https://github.com/sparkfun/Weather_Shield

DEV-13956 Datasheet(PDF) 2 Page - SparkFun Electronics