diff --git a/lib/zh_avr_ac_dimmer b/lib/zh_avr_ac_dimmer
index 40f352b..4bad258 160000
--- a/lib/zh_avr_ac_dimmer
+++ b/lib/zh_avr_ac_dimmer
@@ -1 +1 @@
-Subproject commit 40f352bcc74db6a8caffef9415d094e11589a92e
+Subproject commit 4bad25892a7bb6b3649d3962f5b723ad740f32dc
diff --git a/lib/zh_avr_free_rtos b/lib/zh_avr_free_rtos
index fd75370..abfe2ea 160000
--- a/lib/zh_avr_free_rtos
+++ b/lib/zh_avr_free_rtos
@@ -1 +1 @@
-Subproject commit fd753705dd3031d5b38ad4cdc1d7ee487c4ba856
+Subproject commit abfe2ea922a4d4cf5d39934916c25be3cd6bcfe5
diff --git a/src/ate0003.c b/src/ate0003.c
index 2e82eae..b1fd0bd 100644
--- a/src/ate0003.c
+++ b/src/ate0003.c
@@ -46,11 +46,12 @@ zh_avr_pcf8574_handle_t lcd_handle = {0};
 zh_avr_encoder_handle_t power_encoder_handle = {0};
 zh_avr_encoder_handle_t component_encoder_handle = {0};
 
-volatile static bool is_work = false;        // Work status.
-volatile static bool is_dmm = false;         // DMM using status.
-volatile static bool is_fix = false;         // FIX button status.
-volatile static uint8_t used_channels = 0;   // Permitted channels. Depends of the selected component.
-volatile static bool is_initialized = false; // Normal loading status.
+volatile static bool is_work = false;           // Work status.
+volatile static bool is_dmm = false;            // DMM using status.
+volatile static bool is_fix = false;            // FIX button status.
+volatile static uint8_t permitted_channels = 0; // Permitted channels. Depends of the selected component.
+volatile static uint8_t used_channels = 0;      // Counter of currently enabled channels.
+volatile static bool is_initialized = false;    // Normal loading status.
 
 volatile static bool is_num1_fixed = false; // NUM 1 button FIX status.
 volatile static bool is_num2_fixed = false; // NUM 2 button FIX status.
@@ -71,13 +72,13 @@ int main(void)
     return 0;
 }
 
+#ifdef DEBUG
 void vApplicationStackOverflowHook(TaskHandle_t xTask, char *pcTaskName)
 {
-#ifdef DEBUG
-    printf("Task %s Remaining Stack Size %d.\n", pcTaskName, uxTaskGetStackHighWaterMark(xTask));
+    printf("Task %s Stack Owerflow %d.\n", pcTaskName);
     printf("Free Heap %d.\n", xPortGetFreeHeapSize());
-#endif
 }
+#endif
 
 void system_setup_task(void *pvParameters)
 {
@@ -218,7 +219,7 @@ void zh_avr_pcf8574_event_handler(zh_avr_pcf8574_event_on_isr_t *event)
         }
         break;
     case NUM1_BUTTON:
-        if ((used_channels & CHANNEL1) == 0)
+        if ((permitted_channels & CHANNEL1) == 0)
         {
             break;
         }
@@ -255,7 +256,7 @@ void zh_avr_pcf8574_event_handler(zh_avr_pcf8574_event_on_isr_t *event)
         }
         break;
     case NUM2_BUTTON:
-        if ((used_channels & CHANNEL2) == 0)
+        if ((permitted_channels & CHANNEL2) == 0)
         {
             break;
         }
@@ -291,7 +292,7 @@ void zh_avr_pcf8574_event_handler(zh_avr_pcf8574_event_on_isr_t *event)
         }
         break;
     case NUM3_BUTTON:
-        if ((used_channels & CHANNEL3) == 0)
+        if ((permitted_channels & CHANNEL3) == 0)
         {
             break;
         }
@@ -321,7 +322,7 @@ void zh_avr_pcf8574_event_handler(zh_avr_pcf8574_event_on_isr_t *event)
         }
         break;
     case NUM4_BUTTON:
-        if ((used_channels & CHANNEL4) == 0)
+        if ((permitted_channels & CHANNEL4) == 0)
         {
             break;
         }
@@ -428,7 +429,7 @@ ISR(PCINT2_vect)
 void component_setup_function(uint8_t component)
 {
     char text_buffer[LCD_TEXT_BUFFER];
-    used_channels = component_channel[component];
+    permitted_channels = component_channel[component];
     zh_avr_160x_set_cursor(&lcd_handle, 1, 10);
     strcpy_P(text_buffer, component_cmm[component]);
     zh_avr_160x_print_char(&lcd_handle, text_buffer);
@@ -440,19 +441,19 @@ void component_setup_function(uint8_t component)
     zh_avr_160x_print_char(&lcd_handle, text_buffer);
     zh_avr_pcf8574_write(&led1_handle, is_dmm == true ? 0xF9 : 0xFA);
     zh_avr_pcf8574_write(&led2_handle, 0x0F);
-    if ((used_channels & CHANNEL1) == CHANNEL1)
+    if ((permitted_channels & CHANNEL1) == CHANNEL1)
     {
         zh_avr_pcf8574_write_gpio(&led1_handle, NUM1_LED_BLUE, LED_ON);
     }
-    if ((used_channels & CHANNEL2) == CHANNEL2)
+    if ((permitted_channels & CHANNEL2) == CHANNEL2)
     {
         zh_avr_pcf8574_write_gpio(&led1_handle, NUM2_LED_BLUE, LED_ON);
     }
-    if ((used_channels & CHANNEL3) == CHANNEL3)
+    if ((permitted_channels & CHANNEL3) == CHANNEL3)
     {
         zh_avr_pcf8574_write_gpio(&led2_handle, NUM3_LED_BLUE, LED_ON);
     }
-    if ((used_channels & CHANNEL4) == CHANNEL4)
+    if ((permitted_channels & CHANNEL4) == CHANNEL4)
     {
         zh_avr_pcf8574_write_gpio(&led2_handle, NUM4_LED_BLUE, LED_ON);
     }