diff --git a/shared/f3hw.h b/shared/f3hw.h
index 0265d2d7..2880420e 100644
--- a/shared/f3hw.h
+++ b/shared/f3hw.h
@@ -1,3 +1,4 @@
+//stmbl
 #define AREF 3.338// analog reference voltage
 
 #define VDIVUP 249000.0 * 2.0//HV div pullup R1,R12
@@ -10,10 +11,28 @@
 #define PWM_V TIM8->CCR2
 #define PWM_W TIM8->CCR1
 
-//ottercontrol
-//#define USB_DISCONNECT_PIN GPIO_PIN_13
-//#define USB_DISCONNECT_PORT GPIOC
-
+#define PWM_DEADTIME 0
 //io board
 //#define USB_CONNECT_PIN GPIO_PIN_15
 //#define USB_CONNECT_PORT GPIOB
+
+/*
+//otter
+#define AREF 3.3// analog reference voltage
+
+#define VDIVUP 56000.0//HV div pullup R1,R12
+#define VDIVDOWN 2000.0//HV div pulldown R2,R9
+
+#define LED_Pin GPIO_PIN_0
+#define LED_GPIO_Port GPIOA
+
+#define PWM_U TIM8->CCR1
+#define PWM_V TIM8->CCR2
+#define PWM_W TIM8->CCR3
+ 
+//ottercontrol
+#define USB_DISCONNECT_PIN GPIO_PIN_13
+#define USB_DISCONNECT_PORT GPIOC
+
+#define PWM_DEADTIME 50
+*/
diff --git a/stm32f303/src/tim.c b/stm32f303/src/tim.c
index 7759063f..86daf51e 100644
--- a/stm32f303/src/tim.c
+++ b/stm32f303/src/tim.c
@@ -44,6 +44,7 @@
 
 /* Includes ------------------------------------------------------------------*/
 #include "tim.h"
+#include "f3hw.h"
 
 /* USER CODE BEGIN 0 */
 
@@ -114,7 +115,7 @@ void MX_TIM8_Init(void)
   sBreakDeadTimeConfig.OffStateRunMode = TIM_OSSR_DISABLE;
   sBreakDeadTimeConfig.OffStateIDLEMode = TIM_OSSI_DISABLE;
   sBreakDeadTimeConfig.LockLevel = TIM_LOCKLEVEL_OFF;
-  sBreakDeadTimeConfig.DeadTime = 0;
+  sBreakDeadTimeConfig.DeadTime = PWM_DEADTIME;
   sBreakDeadTimeConfig.BreakState = TIM_BREAK_DISABLE;
   sBreakDeadTimeConfig.BreakPolarity = TIM_BREAKPOLARITY_HIGH;
   sBreakDeadTimeConfig.BreakFilter = 0;