diff --git a/demo.c b/demo.c
index aae557e..b2857f7 100644
--- a/demo.c
+++ b/demo.c
@@ -164,7 +164,7 @@ void checkButton(uint8_t pin, const char* message, void (*command)()) {
         delay(200);
         command();
     }
-    // Обновляем состояние ШИМ, если что-то изменилось
+
     if (pwm_changed) {
         pwm_changed = 0;
         pwm_check_state();
diff --git a/main.c b/main.c
index 0b7c100..496366a 100644
--- a/main.c
+++ b/main.c
@@ -15,6 +15,7 @@ void setup() {
     sendCommand(0x01, 0.0);
 }
 
+
 void loop() {
     checkButton(0, "Turn on PWM!", enablePWM);
     checkButton(1, "Turn off PWM!", disablePWM);
@@ -22,6 +23,14 @@ void loop() {
     checkButton(3, "Decrease frequency by 20%!", decreaseFrequency);
     checkButton(4, "Increase duty cycle by 10%!", increaseDutyCycle);
     checkButton(5, "Decrease duty cycle by 10%!", decreaseDutyCycle);
+}
+
+void checkButton(uint8_t pin, const char* message, void (*command)()) {
+    if (bit_is_clear(PINC, pin)) {
+        Serial.println(message);
+        delay(200);
+        command();
+    }
 
     if (pwm_changed) {
         pwm_changed = 0;