Hackaday (unofficial) November 6, 2024 10:00am A CO2 Traffic Light On An SAO #cons #homehacks #2024supercon #airquality #co2 #micropython #sao #scd40 #hackaday posted by pod_feeder_v2 A CO2 Traffic Light On An SAO [David Bryant] clearly has an awareness of the impact of an excess concentration of CO2 in the local environment and has designed an SAO board to add a CO2 traffic light indicator to one of the spa…