Finally, I’m starting to finish projects with parts I’ve been buying from Core over the years 
Here’s a link to the first one, which I’m calling formpie:
https://github.com/GeoffWilliams/formpie
This is a complete formaldehyde logging platform built around a Raspberry Pi Zero and DFRobot Gravity: SFA40 HCHO Sensor.
In the github, you will find a complete build guide, link to 3d printed case and software packaged as a .deb for easy installation - everything you need to make your own.
Have fun!
