Wi Fi

WiFi and ESP32 Basics

An introduction to the ESP32, a WiFi- and Bluetooth-enabled microcontroller programmable through the Arduino IDE, and how to connect it to networks and make HT…

What are the Wi-Fi Standards (802.11a/b/g/n/ac/ax)?

The Wi-Fi standards are a family of IEEE 802.11 amendments — 802.11b, a, g, n, ac, and ax (marketed as Wi-Fi 4, 5, and 6) — each defining the radio frequency b…

What is a Captive Portal?

A captive portal is a web page that a network (commonly public Wi-Fi in hotels, airports, or cafés) forces a newly connected device to view and interact with —…

What is CSMA/CA?

CSMA/CA (Carrier Sense Multiple Access with Collision Avoidance) is the media access method used in Wi-Fi (802.11) where a device senses the channel, waits a r…