BLE & WiFi for Embedded

Two wireless worlds: BLE's ultra-low-power short-range GATT model (wearables, sensors, phone-tethered) vs WiFi's high-bandwidth, IP-native, internet-direct connectivity, and the power tradeoff.

24 min read

In this lesson:

BLE: ultra-low-power, short-range; the GATT data model and roles
WiFi: high-bandwidth, IP-native, internet-direct, but power-hungry
power as the dominant axis for battery IoT
the BLE-via-gateway vs WiFi-direct connectivity patterns
the gotchas: range, GATT MTU, provisioning, 2.4 GHz coexistence

A fitness band runs for days on a coin cell talking to a phone; a camera streams over WiFi on mains power. Same goal, wireless data, very different tradeoffs.

This lesson is part of Pro

Upgrade to unlock the full lesson, every coding problem, and the complete interview Q&A.

Unlock with Pro

This is just the start

Sign up free to track progress on this lesson, get coding problems with the Run button, and unlock the full interview Q&A.

More in Networking & IoT

OSI vs TCP/IP Model Ethernet Basics IP Addressing

TCP vs UDP

Sockets

MQTT