diff --git a/platformio.ini b/platformio.ini
index 64f8a5b..add7f2c 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -1,4 +1,13 @@
 [env:ATmega328P]
 platform = atmelavr
 board = ATmega328P
-framework = arduino
\ No newline at end of file
+board_build.mcu = atmega328
+board_build.f_cpu = 8000000L
+framework = arduino
+#upload_protocol = usbasp
+#board_fuses.hfuse = 0xDF
+#board_fuses.lfuse = 0xE2
+#board_fuses.efuse = 0x07
+#upload_flags = 
+#	-Pusb
+#	-e
\ No newline at end of file
diff --git a/src/main.c b/src/main.c
index c3cea5d..1610ae0 100644
--- a/src/main.c
+++ b/src/main.c
@@ -5,7 +5,10 @@
 #include "zh_avr_encoder.h"
 #include "zh_avr_ac_dimmer.h"
 
-#define DEBUG
+// #define DEBUG
+
+#define HIGH true
+#define LOW false
 
 #define BUTTON_I2C_ADDRESS 0x00
 #define LED1_I2C_ADDRESS 0x00
@@ -16,6 +19,13 @@
 #define POWER_ENCODER 1
 #define COMPONENT_ENCODER 2
 
+#define DMM_BUTTON 0
+#define FIX_BUTTON 1
+#define NUM1_BUTTON 2
+#define NUM2_BUTTON 3
+#define NUM3_BUTTON 4
+#define NUM4_BUTTON 5
+
 #ifdef DEBUG
 #define BAUD_RATE 9600
 #define BAUD_PRESCALE (F_CPU / 16 / BAUD_RATE - 1)
@@ -44,21 +54,31 @@ zh_avr_pcf8574_handle_t relay_handle = {0};
 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};
+zh_avr_encoder_handle_t component_encoder_handle = {0};
+
+volatile bool is_work = false;
+volatile bool is_dmm = false;
+volatile bool is_fix = false;
 
 int main(void)
 {
     //** Encoders init **/
     zh_avr_encoder_init_config_t encoder_init_config = ZH_AVR_ENCODER_INIT_CONFIG_DEFAULT();
-    encoder_init_config.a_gpio_number = PORTD5;
-    encoder_init_config.b_gpio_number = PORTD6;
-    encoder_init_config.pullup = true;
+    encoder_init_config.gpio_port = AVR_PORTC;
+    encoder_init_config.a_gpio_number = PORTC0;
+    encoder_init_config.b_gpio_number = PORTC1;
     encoder_init_config.encoder_min_value = 0;
     encoder_init_config.encoder_max_value = 100;
-    encoder_init_config.encoder_step = 1;
     encoder_init_config.encoder_number = POWER_ENCODER;
     zh_avr_encoder_init(&encoder_init_config, &power_encoder_handle);
-    zh_avr_encoder_set(&power_encoder_handle, 50);
+    zh_avr_encoder_set(&power_encoder_handle, 100);
+    encoder_init_config.a_gpio_number = PORTC2;
+    encoder_init_config.b_gpio_number = PORTC3;
+    encoder_init_config.encoder_min_value = 1;
+    encoder_init_config.encoder_max_value = 100; // Check.
+    encoder_init_config.encoder_number = COMPONENT_ENCODER;
+    zh_avr_encoder_init(&encoder_init_config, &component_encoder_handle);
+    zh_avr_encoder_set(&component_encoder_handle, 1);
     //** AC dimmer init **/
     zh_avr_ac_dimmer_init_config_t ac_dimmer_init_config = ZH_AVR_AC_DIMMER_INIT_CONFIG_DEFAULT();
     ac_dimmer_init_config.ac_dimmer_frequency = ZH_50HZ;
@@ -67,21 +87,17 @@ int main(void)
     ac_dimmer_init_config.triac_port = AVR_PORTD;
     ac_dimmer_init_config.triac_gpio = PORTD3;
     zh_avr_ac_dimmer_init(&ac_dimmer_init_config);
-    zh_avr_ac_dimmer_start();
 #ifdef DEBUG
     UBRR0H = (BAUD_PRESCALE >> 8);
     UBRR0L = BAUD_PRESCALE;
     UCSR0B = (1 << RXEN0) | (1 << TXEN0);
     UCSR0C = (1 << UCSZ01) | (1 << UCSZ00);
     stdout = &uart;
-    xTaskCreate(system_setup_task, "system_setup_task", 107, NULL, tskIDLE_PRIORITY, &system_setup_task_handle);
+    xTaskCreate(system_setup_task, "system_setup", 107, NULL, tskIDLE_PRIORITY, &system_setup_task_handle);
 #else
     xTaskCreate(system_setup_task, NULL, 107, NULL, tskIDLE_PRIORITY, NULL);
 #endif
     vTaskStartScheduler();
-    for (;;)
-    {
-    }
     return 0;
 }
 
@@ -125,7 +141,11 @@ void system_setup_task(void *pvParameters)
         zh_avr_160x_print_char(&lcd_handle, "%");
         vTaskDelay(50 / portTICK_PERIOD_MS);
     }
-    printf("Ok\n");
+    zh_avr_160x_lcd_clear(&lcd_handle);
+    zh_avr_160x_set_cursor(&lcd_handle, 0, 0);
+    zh_avr_160x_print_char(&lcd_handle, "AC POWER: ");
+    zh_avr_160x_set_cursor(&lcd_handle, 1, 0);
+    zh_avr_160x_print_char(&lcd_handle, "COMPONENT: ");
     vTaskDelete(NULL);
 }
 
@@ -138,20 +158,107 @@ void vApplicationStackOverflowHook(TaskHandle_t xTask, char *pcTaskName)
 
 void zh_avr_pcf8574_event_handler(zh_avr_pcf8574_event_on_isr_t *event)
 {
+    switch (event->gpio_number)
+    {
+    case DMM_BUTTON:
+        if (event->gpio_level == LOW && is_work == false)
+        {
+            if (is_dmm == true)
+            {
+                // DMM Bypas Relay ON.
+                // DMM LED Red ON.
+                // DMM LED Green OFF.
+                is_dmm = false;
+            }
+            else
+            {
+                // DMM Bypas Relay OFF.
+                // DMM LED Red OFF.
+                // DMM LED Green ON.
+                is_dmm = true;
+            }
+        }
+        break;
+    case FIX_BUTTON:
+        if (event->gpio_level == LOW)
+        {
+            // Fix LED Red OFF.
+            // Fix LED Green ON.
+            is_fix = true;
+        }
+        else
+        {
+            // Fix LED Red ON.
+            // Fix LED Green OFF.
+            is_fix = false;
+        }
+        break;
+    case NUM1_BUTTON:
+        break;
+    case NUM2_BUTTON:
+        break;
+    case NUM3_BUTTON:
+        break;
+    case NUM4_BUTTON:
+        break;
+    default:
+        break;
+    }
+#ifdef DEBUG
     printf("Interrupt happened on device address 0x%02X on GPIO number %d at level %d.\n", event->i2c_address, event->gpio_number, event->gpio_level);
-    printf("Interrupt Task Remaining Stack Size %d.\n", uxTaskGetStackHighWaterMark(NULL));
+#endif
 }
 
-void zh_avr_encoder_event_handler(zh_avr_encoder_event_on_isr_t *event) // Do not delete!
+void zh_avr_encoder_event_handler(zh_avr_encoder_event_on_isr_t *event)
 {
+    switch (event->encoder_number)
+    {
+    case POWER_ENCODER:
+        zh_avr_ac_dimmer_set(event->encoder_position);
+        zh_avr_160x_set_cursor(&lcd_handle, 0, 10);
+        zh_avr_160x_print_int(&lcd_handle, (uint8_t)event->encoder_position);
+        zh_avr_160x_print_char(&lcd_handle, "% ");
+        break;
+    case COMPONENT_ENCODER:
+        zh_avr_160x_set_cursor(&lcd_handle, 1, 10);
+        // Set system.
+        break;
+    default:
+        break;
+    }
+#ifdef DEBUG
     printf("Encoder number %d position %0.2f.\n", event->encoder_number, event->encoder_position);
-    printf("Interrupt Task Remaining Stack Size %d.\n", uxTaskGetStackHighWaterMark(NULL));
+#endif
+}
+
+ISR(PCINT1_vect)
+{
+    BaseType_t xHigherPriorityTaskWoken = pdFALSE;
+    if (zh_avr_encoder_isr_handler(&power_encoder_handle) == pdTRUE)
+    {
+        xHigherPriorityTaskWoken = pdTRUE;
+    }
+    if (is_work == false)
+    {
+        if (zh_avr_encoder_isr_handler(&component_encoder_handle) == pdTRUE)
+        {
+            xHigherPriorityTaskWoken = pdTRUE;
+        }
+    }
+    if (xHigherPriorityTaskWoken == pdTRUE)
+    {
+        portYIELD();
+    }
 }
 
 ISR(PCINT2_vect)
 {
-    zh_avr_encoder_isr_handler(&power_encoder_handle);
+    BaseType_t xHigherPriorityTaskWoken = pdFALSE;
     if (zh_avr_pcf8574_isr_handler() == pdTRUE)
+    {
+        xHigherPriorityTaskWoken = pdTRUE;
+    }
+    if (xHigherPriorityTaskWoken == pdTRUE)
     {
         portYIELD();
     }