Why I cannot #include<DHT.h> in my code even I already installed the libraries

@layheng, your topic has been moved to a more suitable location on the forum. Installation and Troubleshooting is not for problems with (nor for advise on) your project :wink: See About the Installation & Troubleshooting category.

  1. Which DHT library did you install?
  2. Where did you install it?
  3. Did you try the examples that come with the library? Do they work?
  4. What are the errors that you get?
  5. Show your code; don't forget to use code tags (the </> button above the reply text box).