diff --git a/Exposer.ino b/Exposer.ino
index 0f1a305..ae2b68b 100644
--- a/Exposer.ino
+++ b/Exposer.ino
@@ -1,24 +1,31 @@
 #include "exposer.h"
+#include <math.h>
 
+// Declare exposer
 Exposer* exposer = &Exposer::self();
 
-uint8_t led = 0;
+const float ppi = 2*M_PI;
 
+// Create some variables
+uint8_t led = 0;
 uint8_t testuint8 = 0;
 uint16_t testuint16 = 0;
 uint32_t testuint32 = 0;
 int8_t testint8 = 0;
 int16_t testint16 = 0;
 int32_t testint32 = 0;
-float testfloat = 0;
+static float testfloat = 1.11;
 String teststring = "Batata";
 
 unsigned long next;
 
 void setup()
 {
+    // Hardware initialization
     Serial.begin(115200);
     pinMode(13, OUTPUT);
+
+
     exposer->registerVariable(VARNAME(led), Exposer::_uint8_t, &led);
     exposer->registerVariable(VARNAME(testuint8), Exposer::_uint8_t, &testuint8);
     exposer->registerVariable(VARNAME(testuint16), Exposer::_uint16_t, &testuint16);
@@ -34,12 +41,33 @@ void setup()
 
 void loop()
 {
+    // Get actual time
+    unsigned int now = millis();
 
-    digitalWrite(13,(testint8==-50));
+    // Create omega
+    float w0 = ppi*now/100;
+    float w1 = ppi*now/1000;
+    float w2 = ppi*now/2000;
+    float w3 = ppi*now/3000;
+    float w4 = ppi*now/4000;
 
+    // Update variables
+    led = now/100;
+    testuint8 = 100*(sin(w1) + 1);
+    testuint16 = 100*(sin(w2 + ppi/4) + 1);
+    testuint32 = 100*(sin(w3 - ppi/4) + 1);
+    testint8 = 100*sin(w1);
+    testint16 = 100*sin(w2 + ppi/4);
+    testint32 = 100*sin(w3 - ppi/4);
+    testfloat = atan(testint8)*30;
+
+    digitalWrite(13, (testint8 > 124));
+
+    // Run exposer
     exposer->update();
 
-    if (millis()>next){
+    // Write something in serial monitor
+    if (now>next){
         Serial.print("uint8:");Serial.println(testuint8);
         Serial.print("uint16:");Serial.println(testuint16);
         Serial.print("uint32:");Serial.println(testuint32);
@@ -48,8 +76,9 @@ void loop()
         Serial.print("int32:");Serial.println(testint32);
         Serial.print("float:");Serial.println(testfloat);
         Serial.print("string:");Serial.println(teststring);
+
+        // Write something in 1s
         next = millis()+1000;
     }
 
 }
-