CO2 traffic light with Cobra SMARTsense Code

Experimental setup for programming a CO2 traffic light.   Measuring the CO2 concentration and programme the warning levels 'good', 'bad' and 'medium' depending on freely selectable CO2 concentrations.   Determination of the CO2 concentration Programming the controller with the Scratch programming language or with a trigger function Use of the standard Cobra SMARTsense sensors for teaching in schools and universities   Students learn how to set up a control system for a CO2 traffic light with just a few components.