Bluetooth Module Low-Power Scheduling and Wake Architecture
A Bluetooth module can sip microamps in sleep or burn tens of milliamps while transmitting, and the gap between those two numbers is what decides battery life. Most teams tune…
BLE Tag Two-Way Ranging: TWRT/RTT Principles, Clock Uncertainty, and RSSI Fusion
RSSI gives you a coarse distance, but in a real room multipath and the human body push the error to ±3-5 m. If a BLE Tag needs sub-meter accuracy for…
Beacon Power Supply and Energy Harvesting: Coin-Cell Selection, Lifetime Modeling, and Batteryless Design
A Beacon lives or dies by its power budget. Unlike a wired sensor, a Bluetooth Beacon has no grid and no technician visiting every month, so the battery decision is…
Bluetooth Module Host Interface and AT Command Protocol: UART Framing, Flow Control, and Sleep Handshake
Why the Host Interface Is the Integration Bottleneck A Bluetooth module rarely works alone. It sits behind an MCU that feeds it data and reads events. The quality of the…
Relay Bluetooth Beacon: Stretching Coverage Past the Dead Spot
Last month I walked a 12,000 m2 distribution center with the facilities lead. The gateway sat in the office at one end. At the far dock door, the Beacon read…
BLE Tag Downlink and Remote Configuration: Gateway-to-Tag Commands, GATT Writes, and Secure Control
Why Downlink Matters Most BLE Tag deployments are uplink-only: the tag broadcasts telemetry and a gateway listens. But real asset-tracking and sensor systems need the gateway to talk back —…
Bluetooth Beacon Advertising Protocols: iBeacon, Eddystone, and AltBeacon Frame Formats
Why Beacon Protocols Matter A Bluetooth Beacon is not a single standard. "Beacon" is a deployment pattern; the actual bytes on the air are defined by one of three advertising…
Bluetooth Module Selection by Bluetooth Version: 5.0 to 5.4
When you buy a Bluetooth module, the Bluetooth core specification version on the datasheet decides which features you actually get. Vendors print "5.3" or "5.4" prominently, but a version label…
BLE Tag Phone Pairing and Connection Management
Most BLE Tag products ship as advertising-only beacons: the phone scans them, reads the payload, and walks away. That model breaks the moment you need to configure the tag, ring…
Beacon Positioning Algorithms: From RSSI to Reliable Coordinates
A Bluetooth beacon is dumb by design: it wakes, transmits a small payload, and goes back to sleep. The position of a receiver is computed elsewhere, by software that turns…