In this lesson, we will learn how to utilize the ESP8266 ESP-01 module to measure temperature and humidity over Wi-Fi, using either a DHT11 or DHT22 sensor. We will begin by preparing the Arduino IDE to be compatible with the ESP8266 chip. Our first programming task will be to make the ESP-01 module blink an LED, confirming basic functionality. For our second project, we will connect a DHT sensor to the ESP-01 to measure temperature and humidity, displaying the readings on the Serial Monitor. Finally, in our third project, we will extend this functionality to view the temperature and humidity data on a mobile phone or computer screen via Wi-Fi.