diff --git a/sketches/pendulum/color_hsv.c b/sketches/pendulum/color_hsv.c
index bdd1228..d609299 100644
--- a/sketches/pendulum/color_hsv.c
+++ b/sketches/pendulum/color_hsv.c
@@ -40,13 +40,12 @@ rgb_t hsv2rgb(hsv_t* hsv) {
 		
 		switch(h) {
 			case 0:
-			case 6: res.r = hsv->val; 	res.g = t; 			res.b = p; break;
-			case 1: res.r = q; 			res.g = hsv->val; 	res.b = p; break;
-			case 2: res.r = p;		 	res.g = hsv->val; 	res.b = t; break;
-			case 3: res.r = p; 			res.g = q; 			res.b = hsv->val; break;
-			case 4: res.r = t;		 	res.g = p; 			res.b = hsv->val; break;
-			case 5: res.r = hsv->hue; 	res.g = p; 			res.b = q; break;
-			
+			case 6: res.r = hsv->val; 	res.g = t; 			res.b = p;			break;
+			case 1: res.r = q; 			res.g = hsv->val; 	res.b = p;			break;
+			case 2: res.r = p;		 	res.g = hsv->val; 	res.b = t;			break;
+			case 3: res.r = p; 			res.g = q; 			res.b = hsv->val;	break;
+			case 4: res.r = t;		 	res.g = p; 			res.b = hsv->val;	break;
+			case 5: res.r = hsv->hue; 	res.g = p; 			res.b = q;			break;
 		}
 	}
 	return res;
diff --git a/sketches/pendulum/timer.c b/sketches/pendulum/timer.c
new file mode 100644
index 0000000..cb9e611
--- /dev/null
+++ b/sketches/pendulum/timer.c
@@ -0,0 +1,53 @@
+#include "timer.h"
+#include "timer_macros.h"
+
+void timer_init(void)
+{
+	//// Timer0
+	// prescaler
+	TCCR0B &= TCCRnB_CSn_CLEAR;
+	TCCR0B |= TCCR0B_CS0_prescale1;
+	// interrupt mask
+	TIMSK0 &= TIMSKn_ENABLE_INTERRUPT_CLEAR;
+	TIMSK0 |= TIMSK0_ENABLE_INTERRUPT_on_nothing;
+
+	//// Timer1
+	// prescaler
+	TCCR1B &= TCCRnB_CSn_CLEAR;
+	TCCR1B |= TCCR1B_CS1_prescale256;
+	// interrupt mask
+	TIMSK1 &= TIMSKn_ENABLE_INTERRUPT_CLEAR;
+	TIMSK1 |= TIMSK1_ENABLE_INTERRUPT_on_overflow;
+	
+	SREG |= 0x80;	// Status Register
+					// Enable global interrupts
+}
+
+void timer_reset(void)
+{
+	TCNT0 		= 0;
+	TCNT1 		= 0;
+	highBits32 	= 0;
+	highBits64 	= 0;
+}
+
+// ISR(TIMER1_OVF_vect)
+void timer_overflow(void)
+{
+	highBits32 += 0x01000000;
+	highBits64 += 0x0000000001000000;
+}
+
+uint32_t timer_now32(void)
+{
+	uint32_t lowBits 	= TCNT0;
+	uint32_t middleBits = TCNT1;
+	return highBits32 | (middleBits<<8) | lowBits;
+}
+
+uint64_t timer_now64(void)
+{
+	uint64_t lowBits 	= TCNT0;
+	uint64_t middleBits = TCNT1;
+	return highBits64 | (middleBits<<8) | lowBits;
+}
diff --git a/sketches/pendulum/timer.h b/sketches/pendulum/timer.h
new file mode 100644
index 0000000..44a7816
--- /dev/null
+++ b/sketches/pendulum/timer.h
@@ -0,0 +1,23 @@
+#ifndef _TIMER_H_
+#define _TIMER_H_
+
+#include <avr/interrupt.h>
+#include <avr/io.h>
+#include <stdint.h>
+
+void timer_init(void);
+void timer_reset(void);
+void timer_overflow(void);
+
+// ISR(TIMER1_OVF_vect);
+
+uint32_t timer_now32(void);
+uint64_t timer_now64(void);
+
+//	counter		| Timer1  | Timer0	
+// 	61(31)...24	| 23...8  | 7...0	<- Bits
+//	838.8608ms 	| 12.8µs  | 50ns	<- each lowest Bit represents
+uint32_t volatile highBits32; // max: ~214.7483648s
+uint64_t volatile highBits64; // max: ~29247a
+
+#endif
diff --git a/sketches/pendulum/timer_macros.h b/sketches/pendulum/timer_macros.h
new file mode 100644
index 0000000..bd3abcf
--- /dev/null
+++ b/sketches/pendulum/timer_macros.h
@@ -0,0 +1,123 @@
+#ifndef _AVR_MACROS_H_
+#define _AVR_MACROS_H_
+
+//// Compare Output Mode for Channel A
+#define TCCRnA_COMnA_disconnected	0x00
+#define TCCRnA_COMnA_toggle			0x40
+#define TCCRnA_COMnA_low			0x80
+#define TCCRnA_COMnA_high 			0xf0
+#define TCCRnA_COMnA_CLEAR			~ (	TCCRnA_COMnA_disconnected	\
+									  	| TCCRnA_COMnA_toggle		\
+									  	| TCCRnA_COMnA_low			\
+									  	| TCCRnA_COMnA_high			)
+// Compare Output Mode for Channel B
+#define TCCRnA_COMnB_disconnected	0x00
+#define TCCRnA_COMnB_toggle			0x10
+#define TCCRnA_COMnB_low			0x20
+#define TCCRnA_COMnB_high 			0x30
+#define TCCRnA_COMnB_CLEAR			~ ( TCCRnA_COMnB_disconnected	\
+										| TCCRnA_COMnB_toggle		\
+										| TCCRnA_COMnB_low			\
+										| TCCRnA_COMnB_high			)
+#define TCCRnB_CSn_CLEAR			~ 0x07
+// Timer/CounterN Interrupt Mask Register
+#define TIMSKn_ENABLE_INTERRUPT_on_nothing			0x00
+#define TIMSKn_ENABLE_INTERRUPT_on_overflow			0x01
+#define TIMSKn_ENABLE_INTERRUPT_on_compare_match_A	0x02
+#define TIMSKn_ENABLE_INTERRUPT_on_compare_match_B	0x04
+#define TIMSKn_ENABLE_INTERRUPT_CLEAR				~ ( TIMSKn_ENABLE_INTERRUPT_on_nothing 				\
+														| TIMSKn_ENABLE_INTERRUPT_on_overflow 			\
+														| TIMSKn_ENABLE_INTERRUPT_on_compare_match_A	\
+														| TIMSKn_ENABLE_INTERRUPT_on_compare_match_B	)
+/**********************************************************/
+
+// Timer/Counter0 Control Register A
+// Compare Output Mode for Channel A
+#define TCCR0A_COM0A_disconnected	0x00
+#define TCCR0A_COM0A_toggle			0x40
+#define TCCR0A_COM0A_low			0x80
+#define TCCR0A_COM0A_high 			0xf0
+// Compare Output Mode for Channel B
+#define TCCR0A_COM0B_disconnected	0x00
+#define TCCR0A_COM0B_toggle			0x10
+#define TCCR0A_COM0B_low			0x20
+#define TCCR0A_COM0B_high 			0x30
+
+// Timer/Counter0 Control Register B
+// Clock Select 0 (prescaler)
+#define TCCR0B_CS0_stopped			0x00
+#define TCCR0B_CS0_prescale1 		0x01
+#define TCCR0B_CS0_prescale8		0x02
+#define TCCR0B_CS0_prescale64		0x03
+#define TCCR0B_CS0_prescale256		0x04
+#define TCCR0B_CS0_prescale1024		0x05
+#define TCCR0B_CS0_falling_on_T0	0x06
+#define TCCR0B_CS0_rising_on_T0		0x07
+
+// Timer/Counter0 Interrupt Mask Register
+#define TIMSK0_ENABLE_INTERRUPT_on_nothing			0x00
+#define TIMSK0_ENABLE_INTERRUPT_on_overflow			0x01
+#define TIMSK0_ENABLE_INTERRUPT_on_compare_match_A	0x02
+#define TIMSK0_ENABLE_INTERRUPT_on_compare_match_B	0x04
+
+
+// Timer/Counter1 Control Register A
+// Compare Output Mode for Channel A
+#define TCCR1A_COM1A_disconnected	0x00
+#define TCCR1A_COM1A_toggle			0x40
+#define TCCR1A_COM1A_low			0x80
+#define TCCR1A_COM1A_high 			0xf0
+// Compare Output Mode for Channel B
+#define TCCR1A_COM1B_disconnected	0x00
+#define TCCR1A_COM1B_toggle			0x10
+#define TCCR1A_COM1B_low			0x20
+#define TCCR1A_COM1B_high 			0x30
+
+// Timer/Counter1 Control Register B
+// Clock Select 1 (prescaler)
+#define TCCR1B_CS1_stopped			0x00
+#define TCCR1B_CS1_prescale1 		0x01
+#define TCCR1B_CS1_prescale8		0x02
+#define TCCR1B_CS1_prescale64		0x03
+#define TCCR1B_CS1_prescale256		0x04
+#define TCCR1B_CS1_prescale1024		0x05
+#define TCCR1B_CS1_falling_on_T1	0x06
+#define TCCR1B_CS1_rising_on_T1		0x07
+
+// Timer/Counter1 Interrupt Mask Register
+#define TIMSK1_ENABLE_INTERRUPT_on_nothing			0x00
+#define TIMSK1_ENABLE_INTERRUPT_on_overflow			0x01
+#define TIMSK1_ENABLE_INTERRUPT_on_compare_match_A	0x02
+#define TIMSK1_ENABLE_INTERRUPT_on_compare_match_B	0x04
+
+
+// Timer/Counter2 Control Register A
+// Compare Output Mode for Channel A
+#define TCCR2A_COM2A_disconnected	0x00
+#define TCCR2A_COM2A_toggle			0x40
+#define TCCR2A_COM2A_low			0x80
+#define TCCR2A_COM2A_high 			0xf0
+// Compare Output Mode for Channel B
+#define TCCR2A_COM2B_disconnected	0x00
+#define TCCR2A_COM2B_toggle			0x10
+#define TCCR2A_COM2B_low			0x20
+#define TCCR2A_COM2B_high 			0x30
+
+// Timer/Counter1 Control Register B
+// Clock Select 1 (prescaler)
+#define TCCR2B_CS2_stopped			0x00
+#define TCCR2B_CS2_prescale1 		0x01
+#define TCCR2B_CS2_prescale8		0x02
+#define TCCR2B_CS2_prescale32		0x03
+#define TCCR2B_CS2_prescale64		0x04
+#define TCCR2B_CS2_prescale128		0x05
+#define TCCR2B_CS2_prescale256		0x06
+#define TCCR2B_CS2_prescale1024		0x07
+
+// Timer/Counter1 Interrupt Mask Register
+#define TIMSK2_ENABLE_INTERRUPT_on_nothing			0x00
+#define TIMSK2_ENABLE_INTERRUPT_on_overflow			0x01
+#define TIMSK2_ENABLE_INTERRUPT_on_compare_match_A	0x02
+#define TIMSK2_ENABLE_INTERRUPT_on_compare_match_B	0x04
+
+#endif