Inside the RF Chamber — Episode 1: How Much Signal Do Building Materials Actually Block?
How much signal do common building materials actually block? We tested five materials inside a $4,000 RF shielded chamber with real Bluetooth LE measurements.
Read next
Nordic's Axon NPU + Bluetooth LE: Building a Voice-Controlled Workout Tracker
A hands-on Voice Workout demo on the Nordic nRF54LM20 DK using the Axon NPU and Bluetooth LE. Nordic's bundled wakeword + KWS models do the work.
LogScope
·
Why I Couldn't Use J-Link RTT Viewer (And Built My Own)
For ten years I wanted a better embedded log viewer, specifically for Bluetooth LE work. In March 2026 I finally built one, in about six hours, with help from an AI coding agent. Here is what didn't work, what changed, and what shipped.
How Much Signal Do Building Materials Block? Real Bluetooth LE Measurements
We tested ABS plastic, ceramic tile, drywall, insulation, and aluminum in a $4,000 RF chamber. How much does each block Bluetooth LE at 2.4 GHz?