Things used in this project

Hardware components
Arduino UNO & Genuino UNO×1
DHT11 Temperature & Humidity Sensor (4 pins)×1
DHT22 Temperature Sensor×1
Breadboard (generic)×1
Onion Corporation OLED Expansion×1
Jumper wires (generic)×1
Software apps and online services
Arduino IDE
Arduino Web Editor

Story

Here, I’m going to show you how to make an Arduino OLED thermometer and hygrometer with DHT11.

The OLED we will use today is 1.3″ inch in size, features 128×64 pixels and uses the SPI Bus.

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