Testing a Bluetooth LE Device Without a Phone
A phone tells you if your device works for users, not if a commit broke it. Scan, advertise and connect from a scriptable Bluetooth LE dongle instead.
Latest
UART Console vs RTT Logging: A Bluetooth LE Power Comparison
An idle UART console holds the high-frequency clock on and keeps the chip from reaching deep sleep. On the bench it raised a beacon's average current 4.4 times, and RTT logging measured at the same floor as no logging at all.
Four Bluetooth LE Advertising Decisions, Priced in Joules
Transmit power, payload, scannability and advertising interval, each measured per advertising event on an nRF54L15. Three change what an event costs. The fourth only changes how many you pay for.
Why Battery Percentage Can't Predict a Bluetooth LE Brown-Out
The battery level your device reports is read at rest and tracks energy. It browns out under load, when the voltage sags. Here is why your battery percentage can't see the reset coming, shown on the bench, and how to design around it.
Hands-On with the nRF54L15 Tag: Dual-Antenna Channel Sounding in a Coin-Cell Package
Nordic's nRF54L15 Tag is a dual-antenna, coin-cell Channel Sounding prototyping platform. A hands-on look at the board, why the second antenna matters, and ranging against it from a phone.
Nordic Axon NPU Development Guide: Edge AI and Bluetooth LE on the nRF54LM20B
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
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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.
Bluetooth LE Audio and Auracast: The Profile Stack Explained (BAP, PBP, CAP, TMAP, HAP, GMAP)
What Bluetooth LE Audio and Auracast actually are, how they relate, and what the six LE Audio profiles (BAP, PBP, CAP, TMAP, HAP, GMAP) each do.
How Much Signal Do Building Materials Block? Real Bluetooth LE Measurements
Every Bluetooth LE product has to work through enclosures and building materials. We measured ABS plastic and aluminum at 2.4 GHz inside a professional RF shielded chamber, with ceramic tile in the full analysis.
Inside the RF Chamber — Episode 1: How Much Signal Do Building Materials Actually Block?
How much signal do common materials actually block? We measured ABS plastic, ceramic tile, and aluminum inside a $4,000 RF shielded chamber with real Bluetooth LE hardware. Drywall and insulation are still to come.
Meet the Nordic nRF54LS05: The Cost-Optimized Entry Point to the nRF54L Series
Nordic nRF54LS05A and LS05B: entry-level Bluetooth LE SoCs with 128 MHz Cortex-M33, 508 KB NVM, and ultra-low power for sensors, beacons, remotes.
Tutorial
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Integrate Hubble Network on your nRF54L15 for Global Connectivity
Learn how to connect your Bluetooth LE devices to Hubble Network's global IoT infrastructure—90M+ smartphone gateways—using Nordic's nRF54L15 and the reference app.