The CO2-Sensor indicates when a classroom should be ventilated to improve air quality.
Especially in times of Covid-19 a necessity!
The project was initiated by the Statistical Office of the Canton of Zurich in partnership with Make.Human.Technology and the Swiss Statistical Society, with the kind support of MakeZurich and volunteer supporters.
The advantages
Build your own sensor and get hands-on experience on topics of the future: Internet of Things, technology, programming, sensors, statistics and data
Ensure optimal air quality in the classroom through monitoring & analysis
Course preparation and experiments after assembly are included for classroom integration
Our device is designed in Switzerland and uses a sensor from Sensirion, a swiss company.
Design and Firmware are available under a Creative Commons ShareAlike NonCommercial License
Video material and detailed assembly and programming instructions
Save sensor data to a swiss cloud service to view and analyze. WLAN or LoraWAN are supported.
We have put together three basic packages that cover different needs and technical starting points.
Devices with the option to export data to the cloud (switzer.cloud from Brunata on servers in Switzerland) make it possible to produce individual evaluations, for example to compare the values of all classrooms in a school building or to evaluate the CO2 value over the course of a lesson.
Privacy Policy (excerpt)
- The sensors transmit data to a central server via a secure path using WiFi or LoraWAN
- The data and metadata stored on the server are anonymized so that individual schools cannot be identified
- The schools are data owners of the data of "their" sensors. They can have their data deleted from the server. They can release their anonymized data for use at the cantonal level (opt-in)
- The schools or teachers and students can obtain their own data as well as the released data of other schools via the central server and thus undertake data evaluations and visualizations.
The build your own CO2-sensor kit consists of:
- Sensirion SCD30 CO2 sensor (measures CO2, humidity and temperature)
- transparent case made of plexiglass
- Bottom side in the color of your choice 3D printed
- "Darky" black or "Brighty" white
- NodeMCU ESP32 microprocessor with WLAN and Bluetooth
- connection cables
- Connection board
- USB cable
- Screw and nut
- LED display: 16 LED Neopixel Ring
- optional: LoraWAN modem
Designed in CH, produced in Gretzenbach
Connectivity
Yearly cost per Kit
(invoiced separate)