Delft researchers give sub-100g drones whisker sensors for touch-based navigation
Engineers at Delft University of Technology built a lightweight whisker sensor system that lets tiny drones under 100 grams navigate by physical contact rather than cameras or LiDAR. Two whiskers mounted at the front connect to miniature pressure sensors that detect surface contact, letting the drone estimate depth, avoid obstacles, and map its surroundings using just 34KB of software.