diff --git a/firmware/components/CAN/CAN-B/CAN-B.ioc b/firmware/components/CAN/CAN-B/CAN-B.ioc
index f377b18e..5c8dabbd 100644
--- a/firmware/components/CAN/CAN-B/CAN-B.ioc
+++ b/firmware/components/CAN/CAN-B/CAN-B.ioc
@@ -23,11 +23,11 @@ Mcu.IPNb=4
 Mcu.Name=STM32F103C(8-B)Tx
 Mcu.Package=LQFP48
 Mcu.Pin0=PC13-TAMPER-RTC
-Mcu.Pin1=PC15-OSC32_OUT
-Mcu.Pin2=PD0-OSC_IN
-Mcu.Pin3=PD1-OSC_OUT
-Mcu.Pin4=PA13
-Mcu.Pin5=PA14
+Mcu.Pin1=PD0-OSC_IN
+Mcu.Pin2=PD1-OSC_OUT
+Mcu.Pin3=PA13
+Mcu.Pin4=PA14
+Mcu.Pin5=PB7
 Mcu.Pin6=PB8
 Mcu.Pin7=PB9
 Mcu.Pin8=VP_SYS_VS_Systick
@@ -40,6 +40,7 @@ MxDb.Version=DB.6.0.130
 NVIC.BusFault_IRQn=true\:0\:0\:false\:false\:true\:false\:false\:false
 NVIC.CAN1_RX1_IRQn=true\:0\:0\:false\:false\:true\:true\:true\:true
 NVIC.DebugMonitor_IRQn=true\:0\:0\:false\:false\:true\:false\:false\:false
+NVIC.EXTI9_5_IRQn=true\:0\:0\:false\:false\:true\:true\:true\:true
 NVIC.ForceEnableDMAVector=true
 NVIC.HardFault_IRQn=true\:0\:0\:false\:false\:true\:false\:false\:false
 NVIC.MemoryManagement_IRQn=true\:0\:0\:false\:false\:true\:false\:false\:false
@@ -53,6 +54,10 @@ PA13.Mode=Serial_Wire
 PA13.Signal=SYS_JTMS-SWDIO
 PA14.Mode=Serial_Wire
 PA14.Signal=SYS_JTCK-SWCLK
+PB7.GPIOParameters=GPIO_PuPd
+PB7.GPIO_PuPd=GPIO_PULLDOWN
+PB7.Locked=true
+PB7.Signal=GPXTI7
 PB8.Locked=true
 PB8.Mode=CAN_Activate
 PB8.Signal=CAN_RX
@@ -61,10 +66,6 @@ PB9.Mode=CAN_Activate
 PB9.Signal=CAN_TX
 PC13-TAMPER-RTC.Locked=true
 PC13-TAMPER-RTC.Signal=GPIO_Output
-PC15-OSC32_OUT.GPIOParameters=GPIO_PuPd
-PC15-OSC32_OUT.GPIO_PuPd=GPIO_PULLDOWN
-PC15-OSC32_OUT.Locked=true
-PC15-OSC32_OUT.Signal=GPXTI15
 PD0-OSC_IN.Mode=HSE-External-Oscillator
 PD0-OSC_IN.Signal=RCC_OSC_IN
 PD1-OSC_OUT.Mode=HSE-External-Oscillator
@@ -87,7 +88,7 @@ ProjectManager.KeepUserCode=true
 ProjectManager.LastFirmware=true
 ProjectManager.LibraryCopy=0
 ProjectManager.MainLocation=Core/Src
-ProjectManager.NoMain=false
+ProjectManager.NoMain=true
 ProjectManager.PreviousToolchain=
 ProjectManager.ProjectBuild=false
 ProjectManager.ProjectFileName=CAN-B.ioc
@@ -122,8 +123,8 @@ RCC.SYSCLKSource=RCC_SYSCLKSOURCE_PLLCLK
 RCC.TimSysFreq_Value=72000000
 RCC.USBFreq_Value=72000000
 RCC.VCOOutput2Freq_Value=8000000
-SH.GPXTI15.0=GPIO_EXTI15
-SH.GPXTI15.ConfNb=1
+SH.GPXTI7.0=GPIO_EXTI7
+SH.GPXTI7.ConfNb=1
 VP_SYS_VS_Systick.Mode=SysTick
 VP_SYS_VS_Systick.Signal=SYS_VS_Systick
 board=custom
diff --git a/firmware/components/CAN/CAN-B/Inc/stm32f1xx_it.h b/firmware/components/CAN/CAN-B/Inc/stm32f1xx_it.h
index 0d1cdc6f..2ae46aa6 100644
--- a/firmware/components/CAN/CAN-B/Inc/stm32f1xx_it.h
+++ b/firmware/components/CAN/CAN-B/Inc/stm32f1xx_it.h
@@ -56,6 +56,7 @@ void DebugMon_Handler(void);
 void PendSV_Handler(void);
 void SysTick_Handler(void);
 void CAN1_RX1_IRQHandler(void);
+void EXTI9_5_IRQHandler(void);
 /* USER CODE BEGIN EFP */
 
 /* USER CODE END EFP */
diff --git a/firmware/components/CAN/CAN-B/Src/gpio.c b/firmware/components/CAN/CAN-B/Src/gpio.c
index 8484501c..f590b159 100644
--- a/firmware/components/CAN/CAN-B/Src/gpio.c
+++ b/firmware/components/CAN/CAN-B/Src/gpio.c
@@ -60,11 +60,15 @@ void MX_GPIO_Init(void)
   GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
   HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);
 
-  /*Configure GPIO pin : PC15 */
-  GPIO_InitStruct.Pin = GPIO_PIN_15;
+  /*Configure GPIO pin : PB7 */
+  GPIO_InitStruct.Pin = GPIO_PIN_7;
   GPIO_InitStruct.Mode = GPIO_MODE_IT_RISING;
   GPIO_InitStruct.Pull = GPIO_PULLDOWN;
-  HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);
+  HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
+
+  /* EXTI interrupt init*/
+  HAL_NVIC_SetPriority(EXTI9_5_IRQn, 0, 0);
+  HAL_NVIC_EnableIRQ(EXTI9_5_IRQn);
 
 }
 
diff --git a/firmware/components/CAN/CAN-B/Src/main.c b/firmware/components/CAN/CAN-B/Src/main.c
index 162a3950..566d2ea4 100644
--- a/firmware/components/CAN/CAN-B/Src/main.c
+++ b/firmware/components/CAN/CAN-B/Src/main.c
@@ -67,6 +67,10 @@ uint32_t TxMailbox;
 uint8_t isValidData;
 uint8_t status;
 
+uint32_t lastDebounceTime = 0;
+const uint32_t debounceDelay = 50;
+uint8_t delayLED = 0 ;
+
 /* USER CODE END 0 */
 
 /**
@@ -112,13 +116,16 @@ int main(void)
 
   TxData[0] = 0x1;
 
+   // milliseconds
+
   /* USER CODE END 2 */
 
   /* Infinite loop */
   /* USER CODE BEGIN WHILE */
   while (1)
   {
-    //HAL_GPIO_TogglePin(GPIOC, GPIO_PIN_13);
+    HAL_GPIO_TogglePin(GPIOC, GPIO_PIN_13);
+    HAL_Delay(delayLED*100);
   }
   /* USER CODE END 3 */
 }
@@ -126,15 +133,20 @@ int main(void)
 void HAL_CAN_RxFifo1MsgPendingCallback(CAN_HandleTypeDef *hcan)
 {
   HAL_CAN_GetRxMessage(hcan, CAN_RX_FIFO1, &RxHeader, RxData);
-  HAL_GPIO_WritePin(GPIOC, GPIO_PIN_13,RxData[0]);
+  delayLED+=RxData[0];
 }
 
-void HAL_GPIO_EXTI15_Callback(uint16_t GPIO_Pin)
+void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin)
 {
-  if(GPIO_Pin == GPIO_PIN_15)
+  if(GPIO_Pin == GPIO_PIN_7)
   {
-    TxData[0] ^= 1;
-    HAL_CAN_AddTxMessage(&hcan, &TxHeader, TxData, &TxMailbox);
+    uint32_t currentTime = HAL_GetTick();
+    if ((currentTime - lastDebounceTime) > debounceDelay)
+    {
+      lastDebounceTime = currentTime;
+      TxData[0] ^= 1;
+      HAL_CAN_AddTxMessage(&hcan, &TxHeader, TxData, &TxMailbox);
+    }
   }
 }
 
diff --git a/firmware/components/CAN/CAN-B/Src/stm32f1xx_it.c b/firmware/components/CAN/CAN-B/Src/stm32f1xx_it.c
index b4ef83ee..dff63ba7 100644
--- a/firmware/components/CAN/CAN-B/Src/stm32f1xx_it.c
+++ b/firmware/components/CAN/CAN-B/Src/stm32f1xx_it.c
@@ -212,6 +212,20 @@ void CAN1_RX1_IRQHandler(void)
   /* USER CODE END CAN1_RX1_IRQn 1 */
 }
 
+/**
+  * @brief This function handles EXTI line[9:5] interrupts.
+  */
+void EXTI9_5_IRQHandler(void)
+{
+  /* USER CODE BEGIN EXTI9_5_IRQn 0 */
+
+  /* USER CODE END EXTI9_5_IRQn 0 */
+  HAL_GPIO_EXTI_IRQHandler(GPIO_PIN_7);
+  /* USER CODE BEGIN EXTI9_5_IRQn 1 */
+
+  /* USER CODE END EXTI9_5_IRQn 1 */
+}
+
 /* USER CODE BEGIN 1 */
 
 /* USER CODE END 1 */