The short version
A DIY mmWave radar project that classifies materials.
From the HackerLinks archive
I built a mmWave material classification radar
A DIY mmWave radar project that classifies materials.
At a glance:
First seen:2026-06-30
Last seen:2026-06-30
Times seen:1
Website:gauthier-lechevalier.com
Why it caught our attention
The project drew strong interest despite skepticism about the proof-of-concept gap.
Where it surfaced on Hacker News
2026-06-30
Editorial paraphrase
Commenters called it very cool and super cool, while debating whether it had actually proven the material-detection use case.
Original threadI built a mmWave material classification radar