ต่อวงจรตามนี้ ตัวอย่างโคด

#include 
#include 

const char* ssid = "Tenda_3EF910";
const char* password = "gift4321";

const int led = D2;
int state = 0;

ESP8266WebServer server(80);
void handle_led() {
state = server.arg("speed").toInt();
analogWrite(D2, state);
server.send(200, "text/html", "
speed is " + String(state) + "/1024

");
}
void setup(void) {
Serial.begin(115200);
Serial.println("");
pinMode(led, OUTPUT);

WiFi.begin(ssid, password);
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
}
Serial.println("");
Serial.print("Connected to ");
Serial.println(ssid);
Serial.print("IP address: ");
Serial.println(WiFi.localIP());

server.on("/", handle_led);
server.begin();
Serial.println("HTTP server started");
}

void loop(void) {
server.handleClient();
}

คลิปวีดีโอสอน Arduino ESP8266 NodeMCU LED PWM : ควบคุมความสว่างของ LED ด้วย NodeMCU