About BLEFYI

BLEFYI is a free, open encyclopedia dedicated to Bluetooth Low Energy (BLE) technology. We document every BLE chip, Bluetooth version, GATT profile, and beacon standard to help developers, engineers, and product teams build better wireless products.

What We Cover

  • BLE Chips & SoCs -- Complete technical specifications for chips from Nordic Semiconductor, Texas Instruments, Espressif, Silicon Labs, Dialog, and more
  • Bluetooth Versions -- From Bluetooth 4.0 through 6.0, with detailed feature comparisons and evolution timeline
  • GATT Profiles -- Heart Rate, Battery Service, Proximity, and dozens more Bluetooth SIG adopted profiles
  • Beacon Standards -- iBeacon, Eddystone, AltBeacon specifications and deployment guides
  • Guides -- From beginner introductions to advanced BLE security, power optimization, and mesh networking
  • Interactive Tools -- Chip selector, GATT browser, power estimator, range calculator, UUID generator, and more
  • Comparisons -- Side-by-side chip comparisons and cross-platform analyses

Part of the Code FYI Family

BLEFYI is part of the Code FYI family of technology encyclopedias. Our sister sites cover complementary identification and communication technologies:

QRCodeFYI

The QR Code Encyclopedia

BarcodeFYI

The Barcode Encyclopedia

NFCFYI

The NFC Encyclopedia

RFIDFYI

The RFID Encyclopedia

SmartCardFYI

The Smart Card Encyclopedia

Available in 15 Languages

BLEFYI is available in English, Korean, Japanese, Chinese (Simplified), Spanish, Portuguese, Hindi, Arabic, French, Russian, German, Turkish, Vietnamese, Indonesian, and Thai.

AI & LLM Friendly

Every page on BLEFYI supports the .md suffix for LLM-friendly markdown output. We also provide llms.txt for AI crawler guidance. Try adding .md to any URL to see the markdown version.