Bluetooth Module Antenna Design: Matching Networks, Ground Planes, and Real-World Range
A Bluetooth module's radio is only as good as the antenna bolted to it. You can buy the most sensitive SoC on the market, but if the antenna is mismatched,…
BLE Tag Mass Provisioning & Secure Enrollment: From Factory Floor to Trusted Fleet
A BLE Tag is cheap until you have ten thousand of them. The moment a fleet leaves the factory, every tag must already carry a unique, trustworthy identity — otherwise…
Beacon Site Survey & RF Planning: From Floor Plan to Reliable Coverage
A Bluetooth Beacon deployment that looks perfect on a floor plan often falls apart in the real building. Drywall, shelving, freezers, and human bodies all eat RF, and a 3…
Bluetooth Module Secure Boot: Firmware Signing and Root of Trust
Ship a Bluetooth module with unsigned firmware and you have implicitly trusted anyone who can flash it. A competitor clones your product, an attacker drops a backdoor, or a bad…
BLE Tag Anti-Tracking Protection: Engineering Unwanted-Tracking Detection
A standard BLE Tag is a coin-sized beacon you clip to keys, a laptop, a pallet, or a patient wristband so you can find it later. That same convenience is…
Relay Bluetooth Beacon: Extending Coverage Past the Gateway Horizon
A standard Bluetooth Beacon just broadcasts. It wakes from a timer, pushes an advertising packet, and goes back to sleep. The model assumes a gateway or smartphone is within radio…
Your Bluetooth Module Draws More Than the Datasheet Says. Here’s the Real Number.
An engineer sent me a screenshot: his Bluetooth module pulled 9 milliamps in sleep, and the datasheet promised 1.8. He'd designed the battery around the 1.8. The chip wasn't broken.…
Your BLE Tag Says 200m. You Get 20. Here’s the Gap, Measured.
A buyer forwarded me a datasheet: "200 meters." He'd stuck the BLE Tag on a pallet, and it dropped off the gateway at nineteen meters past the door. The number…
Beacon with Integrated Sensors: Environmental Sensing, Data Encoding, and Edge Triggering
A plain advertising beacon only answers one question: "where is this tag?" Add a sensor — temperature, humidity, acceleration, light — and the same hardware becomes a distributed measurement node…
Why Is My Beacon RSSI Jumping? The Causes, and What Actually Fixed Them
A warehouse supervisor showed me a graph that looked like a heartbeat on espresso. The RSSI from one Beacon was swinging forty decibels every few seconds, and his location engine…