diff --git a/.vscode/settings.json b/.vscode/settings.json
index a0f0b46..f421afc 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -13,5 +13,8 @@
         "board/esp32s3-builtin.cfg"
     ],
     "idf.portWin": "COM6",
-    "idf.flashType": "UART"
+    "idf.flashType": "UART",
+    "files.associations": {
+        "ledc.h": "c"
+    }
 }
diff --git a/SquareLineProj/ESP32S3_UI.sll b/SquareLineProj/ESP32S3_UI.sll
index 0565e86..ea7c710 100644
--- a/SquareLineProj/ESP32S3_UI.sll
+++ b/SquareLineProj/ESP32S3_UI.sll
@@ -25,7 +25,7 @@
     "uiExportFolderPath": "D:\\yuwell_workspace\\FluxDC\\SquareLineProj\\Export",
     "projectExportFolderPath": "D:\\yuwell_workspace\\FluxDC\\SquareLineProj\\Export",
     "custom_variable_prefix": "uic",
-    "backup_cnt": 220,
+    "backup_cnt": 221,
     "autosave_cnt": 0,
     "group_color_cnt": 0,
     "lvgl_version": "8.3.6",
diff --git a/SquareLineProj/ESP32S3_UI.spj b/SquareLineProj/ESP32S3_UI.spj
index 74f6c1d..6443d92 100644
--- a/SquareLineProj/ESP32S3_UI.spj
+++ b/SquareLineProj/ESP32S3_UI.spj
@@ -7306,7 +7306,7 @@
                         "strtype": "SLIDER/Range",
                         "intarray": [
                           0,
-                          100
+                          8192
                         ],
                         "InheritedType": 7
                       },
@@ -16317,7 +16317,7 @@
     "uiExportFolderPath": "D:\\yuwell_workspace\\FluxDC\\SquareLineProj\\Export",
     "projectExportFolderPath": "D:\\yuwell_workspace\\FluxDC\\SquareLineProj\\Export",
     "custom_variable_prefix": "uic",
-    "backup_cnt": 219,
+    "backup_cnt": 220,
     "autosave_cnt": 0,
     "group_color_cnt": 0,
     "lvgl_version": "8.3.6",
diff --git a/SquareLineProj/backup/ESP32S3_UI_backup01.zip b/SquareLineProj/backup/ESP32S3_UI_backup01.zip
index ee30fd2..776c232 100644
Binary files a/SquareLineProj/backup/ESP32S3_UI_backup01.zip and b/SquareLineProj/backup/ESP32S3_UI_backup01.zip differ
diff --git a/components/FluxUI/ui_events.c b/components/FluxUI/ui_events.c
index 810dc05..2974d30 100644
--- a/components/FluxUI/ui_events.c
+++ b/components/FluxUI/ui_events.c
@@ -4,6 +4,9 @@
 // Project name: ESP32S3_UI
 
 #include "ui.h"
+#include "driver/ledc.h"
+#include "esp_err.h"
+#include "esp_log.h"
 
 void ReadSdCallFunc(lv_event_t * e)
 {
@@ -29,9 +32,12 @@ void F3callbackFunc(lv_event_t * e)
 void lightSliderCallback(lv_event_t * e)
 {
 	// Your code here
-
-	lv_obj_t * slider = lv_event_get_target(e);
-	
-	lv_slider_get_value(slider);
+	uint32_t value = lv_slider_get_value(e->target);
+	//ESP_LOGI("lightSliderCallback", "value = %u", value);
+	printf("value = %lu\n", value);
+	    // Set duty to 50%
+    ESP_ERROR_CHECK(ledc_set_duty(LEDC_LOW_SPEED_MODE, LEDC_CHANNEL_0, value));
+    // Update duty to apply the new value
+    ESP_ERROR_CHECK(ledc_update_duty(LEDC_LOW_SPEED_MODE, LEDC_CHANNEL_0));
 
 }
diff --git a/main/i80_controller_example_main.c b/main/i80_controller_example_main.c
index a7448db..56880ab 100644
--- a/main/i80_controller_example_main.c
+++ b/main/i80_controller_example_main.c
@@ -16,6 +16,7 @@
 #include "esp_lcd_panel_ops.h"
 #include "esp_spiffs.h"
 #include "driver/gpio.h"
+#include "driver/ledc.h"
 #include "lvgl.h"
 
 /*导入Modbus控制头文件*/
@@ -87,6 +88,41 @@ static SemaphoreHandle_t lvgl_mux = NULL;
 
 extern void example_lvgl_demo_ui(lv_disp_t *disp);
 
+/*利用 PWM进行背光亮度调节*/
+#define LEDC_TIMER              LEDC_TIMER_0
+#define LEDC_MODE               LEDC_LOW_SPEED_MODE
+#define LEDC_OUTPUT_IO          (EXAMPLE_PIN_NUM_BK_LIGHT) // Define the output GPIO
+#define LEDC_CHANNEL            LEDC_CHANNEL_0
+#define LEDC_DUTY_RES           LEDC_TIMER_13_BIT // Set duty resolution to 13 bits
+#define LEDC_DUTY               (4096) // Set duty to 50%. (2 ** 13) * 50% = 4096
+#define LEDC_FREQUENCY          (4000) // Frequency in Hertz. Set frequency at 4 kHz
+
+static void example_ledc_init(void)
+{
+    // Prepare and then apply the LEDC PWM timer configuration
+    ledc_timer_config_t ledc_timer = {
+        .speed_mode       = LEDC_MODE,
+        .duty_resolution  = LEDC_DUTY_RES,
+        .timer_num        = LEDC_TIMER,
+        .freq_hz          = LEDC_FREQUENCY,  // Set output frequency at 4 kHz
+        .clk_cfg          = LEDC_AUTO_CLK
+    };
+    ESP_ERROR_CHECK(ledc_timer_config(&ledc_timer));
+
+    // Prepare and then apply the LEDC PWM channel configuration
+    ledc_channel_config_t ledc_channel = {
+        .speed_mode     = LEDC_MODE,
+        .channel        = LEDC_CHANNEL,
+        .timer_sel      = LEDC_TIMER,
+        .intr_type      = LEDC_INTR_DISABLE,
+        .gpio_num       = LEDC_OUTPUT_IO,
+        .duty           = 0, // Set duty to 0%
+        .hpoint         = 0
+    };
+    ESP_ERROR_CHECK(ledc_channel_config(&ledc_channel));
+}
+
+
 static bool example_notify_lvgl_flush_ready(esp_lcd_panel_io_handle_t panel_io, esp_lcd_panel_io_event_data_t *edata, void *user_ctx)
 {
     lv_disp_drv_t *disp_driver = (lv_disp_drv_t *)user_ctx;
@@ -410,6 +446,9 @@ void app_main(void)
     ESP_LOGI(TAG, "Display LVGL animation");
 
     /*测试git*/
+    /*配置LEDC进行背光亮度调节 */
+    example_ledc_init();
+
 
     // Lock the mutex due to the LVGL APIs are not thread-safe
     if (example_lvgl_lock(-1)) {