ESP32 tutorial A-04: The DHT temperature and humidity sensor

Summary

In this tutorial, viewers learn how to connect a DHT temperature sensor to an ESP32 microcontroller. The video outlines the necessary connections, including which pins to use for power and data. It emphasizes downloading the required library for the Arduino IDE to facilitate programming. The tutorial demonstrates how to display temperature and humidity readings on the serial monitor, updating every ten seconds. By following the steps, users can successfully set up their sensor and begin monitoring environmental conditions. The video concludes with an invitation for viewers to engage further.

Takeaways

• 😀 This tutorial covers how to connect a DHT temperature sensor to an ESP32.
• 🔌 The DHT sensor's S pin should connect to any digital pin, while the - pin goes to ground and the middle pin connects to 3.3V.
• 📥 Download the DHT library from the Arduino IDE under the 'Resources' category.
• 🛠️ After downloading the library, set up the ESP32 to display temperature readings.
• 🌡️ Specify the pin and sensor type in the code to read temperature and humidity.
• 📊 The sensor values will be displayed on the serial monitor.
• ⏱️ The readings are taken every ten seconds.
• 🚀 Upload the program to the ESP32 to start seeing results.
• ⌛ It may take some time for the sensor to read values initially.
• 👋 The video concludes with a friendly farewell and an invitation to watch more tutorials.

Q & A

What is the main purpose of this tutorial?

The tutorial teaches how to connect a DHT temperature sensor to an ESP32.

Which pin should the DHT sensor be connected to on the ESP32?

The data pin of the DHT sensor can be connected to any digital pin; in this case, it is connected to pin D.

Where do you connect the power and ground pins of the DHT sensor?

The ground pin goes to the ground, and the middle pin connects to the 3.3V power supply.

What library needs to be downloaded for this project?

You need to download the DHT library from the Arduino IDE under the resources category.

What information does the program display on the serial monitor?

The program displays the temperature and humidity readings from the DHT sensor.

How often does the program read the sensor values?

The program reads the values every ten seconds.

What happens when you upload the program to the ESP32?

After uploading, the sensor readings are displayed in the serial monitor.

What should you expect regarding the time it takes for the sensor to read values?

It takes some time for the sensor to read the values accurately.

What additional resources are mentioned in the tutorial?

A link to the video list is provided in the description for further resources.

What is the closing remark made in the video?

The presenter hopes that viewers liked the video and says goodbye.