diff --git a/Core/Inc/led.h b/Core/Inc/led.h
index 31262e4..76494f7 100644
--- a/Core/Inc/led.h
+++ b/Core/Inc/led.h
@@ -11,7 +11,7 @@
 void LED_Start(uint8_t led);
 void LED_Stop(uint8_t led);
 
-// duty in [0, 100]
+// duty in [0, 255]
 void LED_SetDuty(uint8_t r, uint8_t g, uint8_t b);
 
 #endif
diff --git a/Core/Src/tim.c b/Core/Src/tim.c
index f66b0a8..8761c77 100644
--- a/Core/Src/tim.c
+++ b/Core/Src/tim.c
@@ -1,21 +1,21 @@
 /* USER CODE BEGIN Header */
 /**
-  ******************************************************************************
-  * @file    tim.c
-  * @brief   This file provides code for the configuration
-  *          of the TIM instances.
-  ******************************************************************************
-  * @attention
-  *
-  * Copyright (c) 2024 STMicroelectronics.
-  * All rights reserved.
-  *
-  * This software is licensed under terms that can be found in the LICENSE file
-  * in the root directory of this software component.
-  * If no LICENSE file comes with this software, it is provided AS-IS.
-  *
-  ******************************************************************************
-  */
+ ******************************************************************************
+ * @file    tim.c
+ * @brief   This file provides code for the configuration
+ *          of the TIM instances.
+ ******************************************************************************
+ * @attention
+ *
+ * Copyright (c) 2024 STMicroelectronics.
+ * All rights reserved.
+ *
+ * This software is licensed under terms that can be found in the LICENSE file
+ * in the root directory of this software component.
+ * If no LICENSE file comes with this software, it is provided AS-IS.
+ *
+ ******************************************************************************
+ */
 /* USER CODE END Header */
 /* Includes ------------------------------------------------------------------*/
 #include "tim.h"
@@ -43,9 +43,9 @@ void MX_TIM2_Init(void)
 
   /* USER CODE END TIM2_Init 1 */
   htim2.Instance = TIM2;
-  htim2.Init.Prescaler = 72 - 1;
+  htim2.Init.Prescaler = 0;
   htim2.Init.CounterMode = TIM_COUNTERMODE_UP;
-  htim2.Init.Period = 1 - 1;
+  htim2.Init.Period = 72 - 1;
   htim2.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
   htim2.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_DISABLE;
   if (HAL_TIM_Base_Init(&htim2) != HAL_OK)
@@ -84,9 +84,9 @@ void MX_TIM3_Init(void)
 
   /* USER CODE END TIM3_Init 1 */
   htim3.Instance = TIM3;
-  htim3.Init.Prescaler = 72 - 1;
+  htim3.Init.Prescaler = 720 - 1;
   htim3.Init.CounterMode = TIM_COUNTERMODE_UP;
-  htim3.Init.Period = 100 - 1;
+  htim3.Init.Period = 256 - 1;
   htim3.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
   htim3.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_DISABLE;
   if (HAL_TIM_Base_Init(&htim3) != HAL_OK)
@@ -109,7 +109,7 @@ void MX_TIM3_Init(void)
     Error_Handler();
   }
   sConfigOC.OCMode = TIM_OCMODE_PWM1;
-  sConfigOC.Pulse = 10000 - 1;
+  sConfigOC.Pulse = 255;
   sConfigOC.OCPolarity = TIM_OCPOLARITY_HIGH;
   sConfigOC.OCFastMode = TIM_OCFAST_DISABLE;
   if (HAL_TIM_PWM_ConfigChannel(&htim3, &sConfigOC, TIM_CHANNEL_2) != HAL_OK)