🤖 A robot that feels touch with its whole body

German Aerospace Center (DLR) engineers have created SARA — a robot that can sense touch across its entire surface — without any external tactile skin or sensors.

How it works:
SARA uses only the force sensors built into its joints plus clever math.
When a person touches the robot’s body, the system calculates where and how strongly it was touched by analyzing subtle mechanical changes in the joints.

What it can do:
✍️ Recognize letters or numbers traced on its body — with 90–95% accuracy
🔘 Create “virtual buttons” anywhere — place a sticky note and the robot will remember that spot
🎚 Adjust settings — swipe across its arm like a slider to change speed or grip strength

Why it matters:
Traditional tactile robots rely on expensive, fragile “electronic skin.”
SARA skips that — turning its entire body into an interactive surface, like a smartphone screen.

Limitations:
Currently it can detect only two simultaneous touches, and sensitivity is lower than dedicated sensors.
But for most human–robot collaboration tasks, this minimalist design is a breakthrough.

#robotics #AI #DLR #innovation #HRI #sensors