Change power of the light with potentiometer.

src/main.cpp

@@ -1,25 +1,18 @@
 #include <Arduino.h>
 
-#define LED1 3
-#define LED2 4
-#define LED3 5
-#define BUTTON 2
+#define LED 6
+#define ANALOG_A0 A0
+
+int Voltage = 0;
 
 // Setup Section
 void setup() {
-  pinMode(BUTTON, INPUT);
-  pinMode(LED1, OUTPUT);
-  pinMode(LED2, OUTPUT);
-  pinMode(LED3, OUTPUT);
+  pinMode(LED, OUTPUT);
 }
 
 // Loop Section
 void loop() {
-  while (digitalRead(BUTTON) == LOW) {
-    for (unsigned short int i = 3; i < 6; i++) {
-      digitalWrite(i, HIGH);
-      delay(250);
-      digitalWrite(i, LOW);
-    }
-  }
+  Voltage = analogRead(ANALOG_A0);
+  Voltage = Voltage / 4;
+  analogWrite(LED, Voltage);
 }