T5403 Barometric Pressure Sensor Hookup Guide
Contributors:
CaseyTheRobot
CaseyTheRobot 
Introduction
The T5403 is a barometric pressure sensor with an I2C ("Wire") interface. Barometric pressure sensors measure the absolute pressure of the air around them. This pressure varies with both the weather and altitude. Depending on how you interpret the data, you can monitor changes in the weather, measure altitude, or any other tasks that require an accurate pressure reading.
Covered in This Tutorial
We will show you how to connect this sensor to an Arduino microcontroller and use the included software library to get measurements out of the sensor. We'll also show you how to interpret the readings for both monitoring the weather and showing changes in altitude.
Suggested Reading
This part is easy to use. But before you start, we recommend the following background knowledge:
How to Solder: Through-Hole Soldering
This tutorial covers everything you need to know about through-hole soldering.
Working with Wire
How to strip, crimp, and work with wire.
What is an Arduino?
What is this 'Arduino' thing anyway? This tutorials dives into what an Arduino is and along with Arduino projects and widgets.
Logic Levels
Learn the difference between 3.3V and 5V devices and logic levels.
I2C
An introduction to I2C, one of the main embedded communications protocols in use today.