Show HN: A stealth ESP32 radar hidden in a phone charger

This is a short technical article documenting a personal project.

The goal was to hide a radar-based presence detection system inside an ordinary phone charger.

The focus is not on firmware features, but on design decisions: - physical constraints - radar orientation - electrical isolation - simplicity over configurability

It’s not a tutorial and not a product announcement. Just a record of engineering decisions made under real-world constraints.

Feedback is welcome.