# Grip Sensor: a sensor board that gives PWM servos a sense of touch

- Source: Reddit r/robotics
- Published: 2026-10-21T01:21:25.000Z
- RoboHot: https://robohot.news/en/items/kl74hmhy0kopbu9xkeo7vvazf
- Original: https://www.reddit.com/r/robotics/comments/1xb9wz6/grip_sensor/

## Summary

A Grip Sensor board gives basic PWM servos a sense of touch by measuring servo current to estimate grip force. A status LED indicates whether an object has been grasped, a Teach button lets users teach the grip strength, and an open-drain status output can communicate with existing MCUs. In the video demo, the servo grips a box; when the box drops, the board detects it and notifies the MCU, while also preventing the servo from gripping too tightly and overheating. The author has made 5 boards for testing, available by direct message.