An ESP32-based flower that measures air quality with real sensors and physically points a needle at how badly you need to open a window.
cplusplus hardware esp32 pcb air-quality embedded-systems hardware-designs kicad hobby-project airqualitymonitoringsystem diy-project ens210 pcb-design kicad-pcb diy-electronics ens161
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Updated
Sep 30, 2026 - C++