diff --git a/include/config.h b/include/config.h
index 7aa24db..2aefc0e 100644
--- a/include/config.h
+++ b/include/config.h
@@ -53,6 +53,8 @@ THE SOFTWARE.
 	#define USBD_MANUFACTURER_STRING (uint8_t*) "bytewerk"
 	#define DFU_INTERFACE_STRING_FS	 (uint8_t*) "candleLight firmware upgrade interface"
 
+	#define TIM2_CLOCK_SPEED		 48000000
+
 	#define CAN_INTERFACE			 CAN
 	#define CAN_CLOCK_SPEED			 48000000
 
@@ -74,6 +76,8 @@ THE SOFTWARE.
 	#define USBD_MANUFACTURER_STRING (uint8_t*) "makerbase"
 	#define DFU_INTERFACE_STRING_FS	 (uint8_t*) "CANable-MKS firmware upgrade interface"
 
+	#define TIM2_CLOCK_SPEED		 48000000
+
 	#define CAN_INTERFACE			 CAN
 	#define CAN_CLOCK_SPEED			 48000000
 
@@ -94,6 +98,8 @@ THE SOFTWARE.
 	#define USBD_MANUFACTURER_STRING (uint8_t*) "ConvertDevice"
 	#define DFU_INTERFACE_STRING_FS	 (uint8_t*) "ConvertDevice xCAN firmware upgrade interface"
 
+	#define TIM2_CLOCK_SPEED		 48000000
+
 	#define CAN_INTERFACE			 CAN
 	#define CAN_CLOCK_SPEED			 48000000
 
@@ -113,6 +119,9 @@ THE SOFTWARE.
 	#define USBD_PRODUCT_STRING_FS	 (uint8_t*) "ConvertDevice xCANFD"
 	#define USBD_MANUFACTURER_STRING (uint8_t*) "ConvertDevice"
 	#define DFU_INTERFACE_STRING_FS	 (uint8_t*) "ConvertDevice xCANFD firmware upgrade interface"
+
+	#define TIM2_CLOCK_SPEED		 64000000
+
 	#define CAN_INTERFACE			 FDCAN1
 	#define CAN_CLOCK_SPEED			 64000000
 	#define NUM_CAN_CHANNEL			 1
@@ -141,6 +150,8 @@ THE SOFTWARE.
 	#define USBD_MANUFACTURER_STRING (uint8_t*) "DSD TECH"
 	#define DFU_INTERFACE_STRING_FS	 (uint8_t*) "SH-C30A firmware upgrade interface"
 
+	#define TIM2_CLOCK_SPEED		 48000000
+
 	#define CAN_INTERFACE			 CAN
 	#define CAN_CLOCK_SPEED			 48000000
 
@@ -161,6 +172,8 @@ THE SOFTWARE.
 	#define USBD_MANUFACTURER_STRING (uint8_t*) "FYSETC"
 	#define DFU_INTERFACE_STRING_FS	 (uint8_t*) "UCAN firmware upgrade interface"
 
+	#define TIM2_CLOCK_SPEED		 48000000
+
 	#define CAN_INTERFACE			 CAN
 	#define CAN_CLOCK_SPEED			 48000000
 
@@ -181,6 +194,8 @@ THE SOFTWARE.
 	#define USBD_MANUFACTURER_STRING (uint8_t*) "cantact.io"
 	#define DFU_INTERFACE_STRING_FS	 (uint8_t*) "cantact firmware upgrade interface"
 
+	#define TIM2_CLOCK_SPEED		 48000000
+
 	#define CAN_INTERFACE			 CAN
 	#define CAN_CLOCK_SPEED			 48000000
 
@@ -201,6 +216,8 @@ THE SOFTWARE.
 	#define USBD_MANUFACTURER_STRING (uint8_t*) "canable.io"
 	#define DFU_INTERFACE_STRING_FS	 (uint8_t*) "canable firmware upgrade interface"
 
+	#define TIM2_CLOCK_SPEED		 48000000
+
 	#define CAN_INTERFACE			 CAN
 	#define CAN_CLOCK_SPEED			 48000000
 
@@ -221,6 +238,8 @@ THE SOFTWARE.
 	#define USBD_MANUFACTURER_STRING (uint8_t*) "Roboter Club Aachen"
 	#define DFU_INTERFACE_STRING_FS	 (uint8_t*) "usb2can firmware upgrade interface"
 
+	#define TIM2_CLOCK_SPEED		 48000000
+
 	#define CAN_INTERFACE			 CAN
 	#define CAN_CLOCK_SPEED			 48000000
 
@@ -251,6 +270,8 @@ THE SOFTWARE.
 	#define USBD_MANUFACTURER_STRING (uint8_t*) "STMicroelectronics"
 	#define DFU_INTERFACE_STRING_FS	 (uint8_t*) "CANAlyze firmware upgrade interface"
 
+	#define TIM2_CLOCK_SPEED		 48000000
+
 	#define CAN_INTERFACE			 CAN
 	#define CAN_CLOCK_SPEED			 48000000
 
@@ -271,6 +292,8 @@ THE SOFTWARE.
 	#define USBD_MANUFACTURER_STRING (uint8_t*) "chacaltech"
 	#define DFU_INTERFACE_STRING_FS	 (uint8_t*) "cannette firmware upgrade interface"
 
+	#define TIM2_CLOCK_SPEED		 48000000
+
 	#define CAN_INTERFACE			 CAN
 	#define CAN_CLOCK_SPEED			 48000000
 
@@ -300,6 +323,9 @@ THE SOFTWARE.
 	#define USBD_PRODUCT_STRING_FS	 (uint8_t*) "budgetcan gs_usb"
 	#define USBD_MANUFACTURER_STRING (uint8_t*) "budgetcan"
 	#define DFU_INTERFACE_STRING_FS	 (uint8_t*) "budgetcan firmware upgrade interface"
+
+	#define TIM2_CLOCK_SPEED		 64000000
+
 	#define CAN_INTERFACE			 FDCAN1
 	#define CAN_INTERFACE2			 FDCAN2
 	#define CAN_CLOCK_SPEED			 64000000
@@ -334,6 +360,8 @@ THE SOFTWARE.
 	#define USBD_MANUFACTURER_STRING (uint8_t*) "misc"
 	#define DFU_INTERFACE_STRING_FS	 (uint8_t*) "STM32F4VE firmware upgrade interface"
 
+	#define TIM2_CLOCK_SPEED		 96000000
+
 	#define CAN_INTERFACE			 CAN1
 	#define CAN_CLOCK_SPEED			 42000000
 
diff --git a/src/timer.c b/src/timer.c
index fd40fe1..33e0860 100644
--- a/src/timer.c
+++ b/src/timer.c
@@ -24,8 +24,9 @@ THE SOFTWARE.
 
 */
 
-#include "timer.h"
+#include "config.h"
 #include "hal_include.h"
+#include "timer.h"
 
 void timer_init(void)
 {
@@ -38,7 +39,7 @@ void timer_init(void)
 	TIM2->CCMR1 = 0;
 	TIM2->CCMR2 = 0;
 	TIM2->CCER = 0;
-	TIM2->PSC = 48-1; // run @48MHz/480 = 1MHz = 1us
+	TIM2->PSC = (TIM2_CLOCK_SPEED / 1000000) - 1;   // run @1MHz = 1us
 	TIM2->ARR = 0xFFFFFFFF;
 	TIM2->CR1 |= TIM_CR1_CEN;
 	TIM2->EGR = TIM_EGR_UG;