Added FastLED test

WEBSERVER_LED_CONTROL.ino

@@ -3,19 +3,40 @@
 #include <ESP8266WebServer.h>
 #include <ESP8266mDNS.h>
 #include <WiFiManager.h> 
+#include <FastLED.h>
 
+// LED count and control pin
+#define NUM_LEDS 8
+#define DATA_PIN D3
+
+// LED array
+CRGB leds[NUM_LEDS];
+
+// Web server
 ESP8266WebServer server(80);
 
+
+
 void setup() {
 
+  // Initialize onboard LED
+  pinMode(LED_BUILTIN, OUTPUT);
+
   // Initialize Wifi, start AP if no saved Wifi in range
   WiFiManager wifiManager;
   wifiManager.autoConnect("WEMOS D1 mini pro");
 
+  // Initialize LEDs
+  FastLED.addLeds<WS2812B, DATA_PIN, RGB>(leds, NUM_LEDS);
+
+  // Define web server Handlers
   server.on("/", handleRoot);
   server.onNotFound(handleNotFound);
 
+  // Start webserver
   server.begin();
+
+
 }
 
 void loop() {
@@ -28,4 +49,21 @@ void handleRoot() {
 
 void handleNotFound() {
   server.send(404, "text/plain", "404 File Not Found");
+  blinkLEDs();
+}
+
+void blinkLEDs(){
+  digitalWrite(LED_BUILTIN, LOW);
+  for(int i=0;i<8;i++){
+    leds[i] = CRGB::Red;
+    FastLED.show();
+    delay(20);
+  }
+  delay(500);
+  for(int i=0;i<8;i++){
+    leds[i] = CRGB::Black;
+    FastLED.show();
+    delay(20);
+  }
+  digitalWrite(LED_BUILTIN, HIGH);
 }