diff --git a/simulation/src/de/c3ma/ollo/WS2812Simulation.java b/simulation/src/de/c3ma/ollo/WS2812Simulation.java
index 1c4cff9..4c15f8d 100644
--- a/simulation/src/de/c3ma/ollo/WS2812Simulation.java
+++ b/simulation/src/de/c3ma/ollo/WS2812Simulation.java
@@ -13,6 +13,7 @@ import org.luaj.vm2.lib.jse.JsePlatform;
 import de.c3ma.ollo.mockup.DoFileFunction;
 import de.c3ma.ollo.mockup.ESP8266Adc;
 import de.c3ma.ollo.mockup.ESP8266File;
+import de.c3ma.ollo.mockup.ESP8266Gpio;
 import de.c3ma.ollo.mockup.ESP8266Net;
 import de.c3ma.ollo.mockup.ESP8266Node;
 import de.c3ma.ollo.mockup.ESP8266Time;
@@ -37,6 +38,7 @@ public class WS2812Simulation implements LuaSimulation {
 	private ESP8266Node espNode = new ESP8266Node(this);
 	private DoFileFunction doFile = new DoFileFunction(globals);
 	private ESP8266Ws2812 ws2812 = new ESP8266Ws2812();
+	private ESP8266Gpio gpio = new ESP8266Gpio();
 	private ESP8266Adc adc = new ESP8266Adc();
 	private String scriptName;
 
@@ -47,6 +49,7 @@ public class WS2812Simulation implements LuaSimulation {
 		globals.load(espFile);
 		globals.load(espNode);
 		globals.load(adc);
+		globals.load(gpio);
 		globals.load(new ESP8266Wifi());
 		globals.load(new ESP8266Net());
 		globals.load(new ESP8266Time());
diff --git a/simulation/src/de/c3ma/ollo/mockup/ESP8266Gpio.java b/simulation/src/de/c3ma/ollo/mockup/ESP8266Gpio.java
new file mode 100644
index 0000000..93ee00c
--- /dev/null
+++ b/simulation/src/de/c3ma/ollo/mockup/ESP8266Gpio.java
@@ -0,0 +1,90 @@
+package de.c3ma.ollo.mockup;
+
+import java.util.HashMap;
+
+import javax.swing.SwingUtilities;
+
+import org.luaj.vm2.LuaString;
+import org.luaj.vm2.LuaTable;
+import org.luaj.vm2.LuaValue;
+import org.luaj.vm2.Varargs;
+import org.luaj.vm2.lib.OneArgFunction;
+import org.luaj.vm2.lib.TwoArgFunction;
+import org.luaj.vm2.lib.VarArgFunction;
+
+/**
+ * created at 18.03.2021 - 21:09:03<br />
+ * creator: ollo<br />
+ * project: Esp8266 GPIO Emulation<br />
+ * $Id: $<br />
+ * @author ollo<br />
+ */
+public class ESP8266Gpio extends TwoArgFunction {
+
+    private static final String DIRECTION_INPUT = "input";
+	private HashMap<Integer, Integer> mInputs = new HashMap<Integer, Integer>();
+
+	@Override
+    public LuaValue call(LuaValue modname, LuaValue env) {
+        env.checkglobals();
+        final LuaTable gpio = new LuaTable();
+        gpio.set("mode", new Mode(this));
+        gpio.set("read", new Read(this));
+        gpio.set("INPUT", DIRECTION_INPUT);
+        env.set("gpio", gpio);
+        env.get("package").get("loaded").set("gpio", gpio);
+        return gpio;
+    }
+
+    private class Mode extends VarArgFunction {
+    	
+    	private ESP8266Gpio gpio;
+
+		public Mode(ESP8266Gpio a) {
+    		this.gpio = a;
+    	}
+    	
+        public Varargs invoke(Varargs varargs) {
+        	if (varargs.narg() == 2) {
+        		final int pin = varargs.arg(1).toint();
+        		final LuaString lsDirection = varargs.arg(2).checkstring();
+        		String direction = lsDirection.toString();
+        		if (direction.equals(DIRECTION_INPUT)) {
+        			gpio.mInputs.put(pin, -1);
+        		}
+        		System.out.println("[GPIO] PIN" + pin +" as " + direction);
+        		return LuaValue.valueOf(true);
+        	} else {
+        		return LuaValue.NIL;
+        	}
+        }
+    }
+    
+    private class Read extends OneArgFunction {
+    	
+    	private ESP8266Gpio gpio;
+    	
+    	public Read(ESP8266Gpio a) {
+    		this.gpio = a;
+    	}
+
+		@Override
+		public LuaValue call(LuaValue arg) {
+			int pin = arg.toint();
+			if (mInputs.containsKey(pin)) {
+				return LuaValue.valueOf(mInputs.get(pin));
+			} else {
+				System.out.println("[GPIO] pin" + pin + " not defined (gpio.mode missing)");
+				return LuaValue.NIL;
+			}
+		}
+	}
+    
+    public void setPin(int pin, int newValue) {
+    	if (mInputs.containsKey(pin)) {
+    		mInputs.put(pin, newValue);
+    	} else {
+    		System.out.println("[GPIO] PIN" + pin +" not defined (missing gpio.mode)");
+    	}
+    }
+}