This build combines the Sensirion SCD41 CO₂ sensor with an Arduino TinyML board to detect whether a room is occupied.
Using Edge Impulse to train a model on shifts in air quality, it avoids cameras or motion sensors while still delivering accurate results.
It points toward smarter buildings, energy savings, and safer shared spaces.
Check out the full demo: https://lnkd.in/dmCNzx4K
