Make: Volume 78

of Applied Sciences Umwelt-Campus both had

the idea that “We need to get the students in

the schools early access to all the technology

foundations that we need in this digital age. So

how they can work with sensors and the Internet

of Things, how they can bring their ideas and

innovations to life at an early age.”

They happened to decide onCO

2

monitoring

devices as a project.With Covid-19, the project

took on new meaning and Guido began working

with students to build CO

2

devices and use them

in classrooms.

Understanding CO

2

“We are emitting CO

2

every time we breathe,”

said Guido. “Typically, the only sources in a

classroom for CO

2

are human ...