Si7021 Humidity and Temperature Sensor Hookup Guide
Contributors:
Joel_E_B
Joel_E_B 
Resources and Going Further
With that, you should now have a functional humidity and temperature sensing system. Check the links below for more information.
- Si7021 Datasheet
- Si7021 Breakout Board Schematic
- Si7021 Breakout Board Eagle Files
- Github repo containing all the latest files and code
Need some inspiration? Check out these other tutorials:
- Make an automated terrarium that manages heat and humidity levels.
- Build a humidor control box that maintains a constant humidity in a controlled space.
Creating a Humidor Control Box
Because some of our boards need to be re-humidified after reflow, we decided to make our own humidor. This tutorial will focus on how to model a project in 3D and then fabricate it using a CNC routing machine.
Hazardous Gas Monitor
Build a portable gas monitor to check for dangerous levels of hazardous gases.
HIH-4030 Humidity Sensor Hookup Guide
Measure relative humidity with SparkFun's HIH-4030 Humidity Sensor Breakout.
Qwiic Atmospheric Sensor (BME280) Hookup Guide
Measure temperature, humidity, barometric pressure with the SparkFun Atmospheric Sensor Breakout BME280 (Qwiic).
Or check out this blog post for ideas.