The ESP8266 is a popular microcontroller used by both professional designers and hobbyists.

This guide will show you how to turn a LED on and off from Adafruit IO using any modern web browser.

This guide will show you how to send momentary button press data to Adafruit IO.

Dashboards allow you to visualize data and control Adafruit IO connected projects from any modern web browser.

This guide will show you how to send color data from Adafruit IO to a RGB LED.

This guide will show you how to send temperature and humidity values wirelessly to Adafruit IO from a DHT22 sensor.