diff --git a/prosjekt.X/fan_speeeed.c b/prosjekt.X/fan_speeeed.c
index 49e0c42..38540af 100644
--- a/prosjekt.X/fan_speeeed.c
+++ b/prosjekt.X/fan_speeeed.c
@@ -2,7 +2,6 @@
 #include "uart.h"
 
 uint16_t timer_period_ms = 1;
-uint16_t timer_period = 0.01;
 uint16_t fan_speed = 0;
 volatile uint16_t fan1_edge_counter = 0;
 volatile uint16_t fan2_edge_counter = 0;
@@ -11,11 +10,10 @@ volatile uint16_t fan2_edge_counter = 0;
 void init_TCA0() {
     TCA0.SINGLE.INTCTRL = TCA_SINGLE_OVF_bm ;
     TCA0.SINGLE.CTRLA = TCA_SINGLE_ENABLE_bm | TCA_SINGLE_CLKSEL_DIV1024_gc ; /* Sysclk /1024 */
-    //TCA0.SINGLE.PERBUF = 3906;
-    TCA0_update_period();
+    TCA0_update_period(timer_period_ms);
 }
 
-void TCA0_update_period() {
+void TCA0_update_period(uint16_t timer_period) {
     TCA0.SINGLE.PERBUF = (F_CPU * (1 / timer_period) / 1024); /* F_CPU * F_IRQ / TCA_prescaler */
 }
 
diff --git a/prosjekt.X/fan_speeeed.h b/prosjekt.X/fan_speeeed.h
index 0f430ee..160071d 100644
--- a/prosjekt.X/fan_speeeed.h
+++ b/prosjekt.X/fan_speeeed.h
@@ -23,13 +23,18 @@ extern "C" {
 #include <avr/interrupt.h>
 #include <avr/io.h>
     
+    /*
+     The code has inspiration from "Getting Started with Analog comparator(AC)" by Microchip for setting up analog comparrator. 
+     *          web link: https://ww1.microchip.com/downloads/aemDocuments/documents/MCU08/ApplicationNotes/ApplicationNotes/TB3211-Getting-Started-with-AC-DS90003211.pdf
+     * and inspiration form practice 6 for TCA0 setup
+     */
     
     
     // INITALICE TIMER COUNTER
     void init_TCA0();    
     
     // UPDATE TIMER PERIOD
-    void TCA0_update_period_ms ();
+    void TCA0_update_period_ms (uint16_t timer_period);
     
     // TAKES INN A TIME AND A THE COUNTED FAN DIPS 
     // RETURNS THE RPM OF THE FAN