Tommy
Turn ESP32 devices into through-wall motion sensors
- Category
- Other
- Launched
- October 23, 2025
- Pricing
- free
- Founder
- mike2872
- Website
- tommysense.com
Tommy is a Wi Fi sensing system that turns ESP32 devices into through wall motion and presence sensors. It uses Channel State Information (CSI) from Wi Fi packets to detect motion and stationary occupancy (including breathing) through walls, furniture, and floors. The system runs entirely on local hardware, with no cloud dependency for sensing data. It integrates with Home Assistant (via MQTT) and Matter (as an occupancy sensor).
Discovered via
- Hacker News Show HN · · Show HN: Tommy – Turn ESP32 devices into through-wall motion sensors