Hackaday (unofficial) July 5, 2021 9:00pm DIY Air Quality Sensor #homehacks #thehackadayprize #2021hackadayprize #airqualitysensors #homeautomation #weathermonitor #hackaday posted by pod_feeder_v2 DIY Air Quality Sensor [Andrew Lamchenko], who has built a number of small e-ink-based sensors this year, released another design called the eON Indoor Air Quality Sensor. As his previous sensor designs, the eON b…