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Video 14: I2C 16x2 LCD Display 丨 DHT11 - Humidity and Temperature Sensor 丨 Heat Index

This tutorial dives into the essentials of connecting and using a DHT11 humidity and temperature sensor and a 16x2 I2C LCD display in Arduino programming.

  • DHT11 Sensor: Explains how to connect and read temperature, humidity, and heat index values from a DHT11 sensor. It covers the importance of using a pull-up resistor and the capability of the sensor to use either 3.3V or 5V power.

  • I2C LCD Display: Guides through connecting and initializing a 16x2 I2C LCD display with the Arduino, highlighting how to save IO pins by using I2C communication. It includes details on adjusting the contrast and backlight of the display.

  • Library Installation: Demonstrates how to install the necessary libraries for DHT11 and I2C LCD display from the Arduino Library Manager.

  • Coding for DHT11 and I2C LCD: Provides a step-by-step guide on writing code to read data from the DHT11 sensor and display it on the I2C LCD. It includes checking for valid sensor readings and handling errors.

  • Displaying Data: Shows how to display temperature, humidity, and heat index on the LCD, including how to alternate between different displays using a delay.

  • Challenge Activity: Encourages further learning by adding a button to switch between displaying temperature and heat index in Celsius and Fahrenheit, implementing either millis() function or hardware interrupts for improved functionality.

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