diff --git a/app/src/basic/ssd1306/wave_drawer.c b/app/src/basic/ssd1306/wave_drawer.c
index 6242a60..0bb9b67 100644
--- a/app/src/basic/ssd1306/wave_drawer.c
+++ b/app/src/basic/ssd1306/wave_drawer.c
@@ -2,6 +2,8 @@
 
 #include "znordic.h"
 
+static bool m_draw_scan_line = false;
+
 void wave_drawer_init(wave_drawer_t *dw, uint8_t xs, uint8_t ys, uint16_t width, uint16_t high) {
   dw->xs          = xs;
   dw->ys          = ys;
@@ -67,7 +69,11 @@ void wave_drawer_draw_next_point(wave_drawer_t *dw, uint8_t y) {
    */
   for (size_t yoff = 0; yoff < dw->high; yoff++) {
     if (xpos + 1 <= dw->xright) {
-      ssd1306_gram_write_point(ssd1306_handler(), xpos + 1, dw->ybottom - yoff, 1);
+      if (m_draw_scan_line) {
+        ssd1306_gram_write_point(ssd1306_handler(), xpos + 1, dw->ybottom - yoff, 1);
+      } else {
+        ssd1306_gram_write_point(ssd1306_handler(), xpos + 1, dw->ybottom - yoff, 0);
+      }
     }
     for (uint8_t i = 2; i < 2 + 20; i++) {
       if (xpos + i <= dw->xright) {
diff --git a/app/src/one_conduction/display_manager.c b/app/src/one_conduction/display_manager.c
index 857a40c..a144559 100644
--- a/app/src/one_conduction/display_manager.c
+++ b/app/src/one_conduction/display_manager.c
@@ -214,7 +214,7 @@ typedef struct {
   int heartrate_y;
 } sample_page_state_t;
 sample_page_state_t m_sample_page_state;
-
+#if 0
 void dsp_mgr_change_to_sampling(int progress_s, int heartrate) {  //
   sample_page_state_t* sps = &m_sample_page_state;
 
@@ -274,6 +274,73 @@ void samplePage_update_state(int progress_s, int wave_y, int heartrate, bool upd
   }
   if (update_screen) ssd1306_basic_gram_update();
 }
+#endif
+void dsp_mgr_change_to_sampling(int progress_s, int heartrate) {  //
+  sample_page_state_t* sps = &m_sample_page_state;
+
+  sps->progress_x     = SMAPLE_PAGE_START_X + 1;
+  sps->progress_y     = SMAPLE_PAGE_START_Y;
+  sps->progress_width = 110;
+  sps->progress_hight = 8;
+
+  sps->wave_drawser_x     = SMAPLE_PAGE_START_X;
+  sps->wave_drawser_y     = SMAPLE_PAGE_START_Y + sps->progress_hight + 10;
+  sps->wave_drawser_hight = 40;
+  sps->wave_drawser_width = 100;
+
+  sps->heartrate_x = sps->wave_drawser_x + sps->wave_drawser_width + 5;
+  sps->heartrate_y = sps->wave_drawser_y;
+
+  int     progress = progress_s / 30.0 * 25;
+  uint8_t xchange, ychange;
+
+  ssd1306_basic_clear_gram();
+  /**
+   * @brief
+   *  =============== o
+   *  |           |  ÐÄ
+   *  | wave      |
+   *  |           | ÐÄÂÊ
+   */
+  ssd1306_basic_draw_progress(sps->progress_x, sps->progress_y, sps->progress_width, sps->progress_hight, 25, progress);
+  ssd1306_basic_draw_str(sps->progress_x + sps->progress_width + 2, sps->progress_y, &xchange, &ychange, "x", &font8x8_xo_lib);
+
+  wave_drawer_init(&sps->wave_drawer, sps->wave_drawser_x, sps->wave_drawser_y, sps->wave_drawser_width, sps->wave_drawser_hight);
+  wave_drawer_draw_border(&sps->wave_drawer);
+
+  ssd1306_basic_draw_str(sps->heartrate_x, sps->heartrate_y, &xchange, &ychange, "<>", &font_asicc16x8_lib);
+  if (heartrate <= 0) {
+    ssd1306_basic_draw_str(sps->heartrate_x, sps->heartrate_y + 20, &xchange, &ychange, "-- ", &font_asicc16x8_lib);
+  } else {
+    ssd1306_basic_draw_str(sps->heartrate_x, sps->heartrate_y + 20, &xchange, &ychange, fmt("%3d", heartrate), &font_asicc16x8_lib);
+  }
+  ssd1306_basic_gram_update();
+  dsp_mgr_change_to_page(kPage_sampling);
+}
+
+void samplePage_update_state(int progress_s, int wave_y, int heartrate, bool update_screen) {  //
+
+  sample_page_state_t* sps = &m_sample_page_state;
+  uint8_t              xchange, ychange;
+
+  int progress = progress_s / 30.0 * 25;
+
+  ssd1306_basic_draw_progress(sps->progress_x, sps->progress_y, sps->progress_width, sps->progress_hight, 25, progress);
+  if (progress_s / 10 >= 3) {
+    ssd1306_basic_draw_str(sps->progress_x + sps->progress_width + 2, sps->progress_y, &xchange, &ychange, "o", &font8x8_xo_lib);
+  } else {
+    ssd1306_basic_draw_str(sps->progress_x + sps->progress_width + 2, sps->progress_y, &xchange, &ychange, "x", &font8x8_xo_lib);
+  }
+
+  ssd1306_basic_draw_str(sps->heartrate_x, sps->heartrate_y, &xchange, &ychange, "<>", &font_asicc16x8_lib);
+  if (heartrate <= 0) {
+    ssd1306_basic_draw_str(sps->heartrate_x, sps->heartrate_y + 20, &xchange, &ychange, "-- ", &font_asicc16x8_lib);
+  } else {
+    ssd1306_basic_draw_str(sps->heartrate_x, sps->heartrate_y + 20, &xchange, &ychange, fmt("%3d", heartrate), &font_asicc16x8_lib);
+  }
+  wave_drawer_draw_next_point(&sps->wave_drawer, wave_y);
+  if (update_screen) ssd1306_basic_gram_update();
+}
 
 void samplePage_schedule() {
   static int count = 0;
@@ -282,10 +349,12 @@ void samplePage_schedule() {
   int wave_y      = (int)hwss_read_val();
   int heartrate   = (int)hwss_read_heart_rate();
   // ZLOGI("samplePage_schedule %d %d %d", capturetime, wave_y, heartrate);
-  samplePage_update_state(capturetime / 1000, wave_y, heartrate, count % 3 == 0);
+  samplePage_update_state(capturetime / 1000, wave_y, heartrate, count % 10 == 0);
 }
 
-//
+/*******************************************************************************
+ *                                samplingError                                *
+ *******************************************************************************/
 void dsp_mgr_change_to_samplingError() {
   /**
    * @brief
diff --git a/app/src/one_conduction/heart_wave_sample_service.c b/app/src/one_conduction/heart_wave_sample_service.c
index 54f1630..03a9aa2 100644
--- a/app/src/one_conduction/heart_wave_sample_service.c
+++ b/app/src/one_conduction/heart_wave_sample_service.c
@@ -31,12 +31,42 @@ static void swap_buffer() {
   m_capture_buffer_index = 0;
   return;
 }
+static float amp_val(uint16_t val, uint16_t valcener, float amp) {
+  float valf = (float)val - valcener;
+  valf       = valf * amp;
+  valf += valcener;
 
+  if (valf >= 100) {
+    valf = 100;
+  }
+
+  if (valf <= 0) {
+    valf = 0;
+  }
+  return valf;
+}
+
+typedef struct {
+  float value;
+  float efectiveFactor;
+} filter_t;
+
+filter_t m_filter = {0, 0.8};
+
+static float Filter(filter_t* filter, float newInput) {
+  float newv    = ((float)filter->value * (1.0f - filter->efectiveFactor)) + ((float)newInput * filter->efectiveFactor);
+  filter->value = newv;
+  return newv;
+}
 void nrfx_timer_event_handler(nrf_timer_event_t event_type, void* p_context) {  //
   uint16_t val = SingleLeadECG_battery_get_adc_val();                           // 12bit
 
-  m_real_time_data = (float)val / 4096.0f * 100;
-  ZLOGI("%d", val);
+  float val_af100 = (float)val / 4096.0f * 100;
+
+  val_af100        = amp_val(val_af100, 50, 1.8f);
+  val_af100        = Filter(&m_filter, val_af100);
+  m_real_time_data = val_af100;
+  // ZLOGI("%d", val);
 
   if (m_capture_buffer == NULL) {
     swap_buffer();