Whisker-based tactile flight for tiny drones.

Tiny 3.2-gram drones achieve autonomous tactile flight with millimeter-scale obstacle detection using whisker-based sensing and onboard microcontrollers.

• Why it matters: This work addresses the challenge of enabling small drones to navigate in environments where visual sensors are limited or unavailable, such as darkness or GPS-denied areas, expanding their operational capabilities.
• What they did: Researchers developed a lightweight tactile sensing system with barometers at each whisker base, along with a depth estimation pipeline, allowing the drone to perceive and interact with its surroundings using just 192 KB of onboard memory.
• The result: The system successfully enables tiny drones to autonomously avoid obstacles, contour surfaces, and explore confined spaces, demonstrating a new bio-inspired approach for perception in complex, visually degraded environments.