Esp32 web server Q&A Forum › Category: ESP32 › Esp32 web server 0 Vote Up Vote Down fabina asked 6 years ago If I send a high to gpio0 pin, how can I receive it to my web browser to make a button change color? 1 Answers 0 Vote Up Vote Down Rui Santos Staff answered 6 years ago Hello, what do you mean exactly? Connecting like a pushbutton to an digital pin and read the state?