diff --git a/src/main.cpp b/src/main.cpp
index 5a6e145..fb087c1 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -1,6 +1,6 @@
 #include <Arduino.h>
 
-static uint8_t led_duration = 4;
+static uint8_t led_duration = 8;
 
 /*
  * Function: configureTimer
@@ -14,7 +14,7 @@ void configureTimer()
     TCCR0B = 0;// same for TCCR0B
     TCNT0  = 0;//initialize counter value to 0
     // set compare match register for 2khz increments
-    OCR0A = 124;// = (16*10^6) / (2000*64) - 1 (must be <256)
+    OCR0A = 4;// = (16*10^6) / (2000*64) - 1 (must be <256)
     // turn on CTC mode
     TCCR0A |= (1 << WGM01);
     // Set CS01 and CS00 bits for 64 prescaler
@@ -71,6 +71,7 @@ void setup()
     Serial.println("set output pins...");
     pinMode(2, OUTPUT);
     pinMode(3, OUTPUT);
+    pinMode(4, OUTPUT);
     pinMode(9, OUTPUT);
     pinMode(7, INPUT);
 
@@ -94,6 +95,9 @@ static uint16_t led_a_counter = led_a_period;
 static uint16_t led_b_period = (uint16_t)-1;
 static uint16_t led_b_counter = led_b_period;
 
+static uint16_t led_c_period = (uint16_t)-1;
+static uint16_t led_c_counter = led_c_period;
+
 ISR(TIMER0_COMPA_vect){
     iterator++;
 
@@ -108,6 +112,7 @@ ISR(TIMER0_COMPA_vect){
             period = iterator;
             led_a_period = period / 3;
             led_b_period = period * 20 / 61;
+            led_c_period = period * 20 / 59;
             iterator = 0;
             rotations++;
         }
@@ -127,7 +132,7 @@ ISR(TIMER0_COMPA_vect){
 
     /* Emit strobe for LED B */
     led_b_counter--;
-    if (led_b_counter < led_duration) {
+    if (led_b_counter < led_duration*6) {
         digitalWrite(3, HIGH);
         if (!led_b_counter) {
             led_b_counter = led_b_period;
@@ -135,6 +140,17 @@ ISR(TIMER0_COMPA_vect){
     } else {
         digitalWrite(3, LOW);
     }
+
+    /* Emit strobe for LED C */
+    led_c_counter--;
+    if (led_c_counter < led_duration) {
+        digitalWrite(4, HIGH);
+        if (!led_c_counter) {
+            led_c_counter = led_c_period;
+        }
+    } else {
+        digitalWrite(4, LOW);
+    }
 }
 
 void loop()