diff --git a/Sketches/sketch_sep20a-AverageValue/.vscode/arduino.json b/Sketches/sketch_sep20a-AverageValue/.vscode/arduino.json
index 353b2e9..6554c6d 100644
--- a/Sketches/sketch_sep20a-AverageValue/.vscode/arduino.json
+++ b/Sketches/sketch_sep20a-AverageValue/.vscode/arduino.json
@@ -1,4 +1,5 @@
 {
     "port": "COM7",
-    "board": "arduino:avr:uno"
+    "board": "arduino:avr:uno",
+    "output": "C:\\Temp"
 }
\ No newline at end of file
diff --git a/Sketches/sketch_sep27a-LEDButton/.vscode/arduino.json b/Sketches/sketch_sep27a-LEDButton/.vscode/arduino.json
new file mode 100644
index 0000000..3f89244
--- /dev/null
+++ b/Sketches/sketch_sep27a-LEDButton/.vscode/arduino.json
@@ -0,0 +1,6 @@
+{
+    "board": "arduino:avr:uno",
+    "port": "COM7",
+    "output": "C:\\Temp",
+    "sketch": "sketch_sep27a-LEDButton.ino"
+}
\ No newline at end of file
diff --git a/Sketches/sketch_sep27a-LEDButton/.vscode/c_cpp_properties.json b/Sketches/sketch_sep27a-LEDButton/.vscode/c_cpp_properties.json
new file mode 100644
index 0000000..fd99c76
--- /dev/null
+++ b/Sketches/sketch_sep27a-LEDButton/.vscode/c_cpp_properties.json
@@ -0,0 +1,16 @@
+{
+    "configurations": [
+        {
+            "name": "Win32",
+            "includePath": [
+                "C:\\Users\\Alex\\AppData\\Local\\Arduino15\\packages\\arduino\\tools\\**",
+                "C:\\Users\\Alex\\AppData\\Local\\Arduino15\\packages\\arduino\\hardware\\avr\\1.6.21\\**"
+            ],
+            "forcedInclude": [
+                "C:\\Users\\Alex\\AppData\\Local\\Arduino15\\packages\\arduino\\hardware\\avr\\1.6.21\\cores\\arduino\\Arduino.h"
+            ],
+            "intelliSenseMode": "msvc-x64"
+        }
+    ],
+    "version": 4
+}
\ No newline at end of file
diff --git a/Sketches/sketch_sep27a-LEDButton/sketch_sep27a-LEDButton.ino b/Sketches/sketch_sep27a-LEDButton/sketch_sep27a-LEDButton.ino
new file mode 100644
index 0000000..cda9fa9
--- /dev/null
+++ b/Sketches/sketch_sep27a-LEDButton/sketch_sep27a-LEDButton.ino
@@ -0,0 +1,48 @@
+int buttonPin = 2;
+int ledPin = 13;
+
+void setup()
+{
+    pinMode(ledPin, OUTPUT);
+    pinMode(buttonPin, INPUT);
+    Serial.begin(9600);
+}
+
+int buttonState = 0;
+int lastButtonState = 0;
+int ledState = 0;
+void loop()
+{
+    buttonState = digitalRead(buttonPin);
+
+    /**
+     * "Toggle"-funksjon med LED.
+     *
+     * Gjør i praksis følgende:
+     * - Sjekker om knappen er trykt ned og i tillegg har blitt sluppet tidligere (for å unngå blinking av LED).
+     *     - Dette gjøres ved å sjekke "lastButtonState"-variabelet som oppdateres senere i koden.
+     * - Setter "ledState" til det omvendte (HIGH/LOW) av det det var tidligere.
+     * - Serial.print av "LED state" (status).
+     * - Setter LED til HIGH/LOW for å slå av/på.
+     */
+    if (buttonState == HIGH && buttonState != lastButtonState) {
+        ledState = ledState == HIGH ? LOW : HIGH;
+
+        Serial.print("LED state: ");
+        Serial.println(ledState == HIGH ? "HIGH" : "LOW");
+        digitalWrite(ledPin, ledState);
+    }
+
+    /**
+     * Serial.print() "button state" oppdateringer
+     *
+     * - Sjekker om buttonState er forskjellig fra lastButtonState.
+     * - Oppdaterer lastButtonState og logger til Serial-konsoll.
+     */
+    if (buttonState != lastButtonState) {
+        Serial.print("Button state changed: ");
+        Serial.println(buttonState == HIGH ? "HIGH" : "LOW");
+
+        lastButtonState = buttonState;
+    }
+}