diff --git a/main/gui.c b/main/gui.c
index c0f0d58..f5fb85b 100644
--- a/main/gui.c
+++ b/main/gui.c
@@ -21,6 +21,16 @@ void gui_init() {
     assert (rv == pdPASS);
 }
 
+/**
+ * Notification API:
+ *
+ *    0b1 - knob CW
+ *   0b10 - knowb CCW
+ *  0b100 - button released
+ * 0b1000 - button pressed
+ *
+ * @param arg
+ */
 static void __attribute__((noreturn)) gui_thread(void *arg) {
     uint32_t pos = 20;
     bool btn = 0;
diff --git a/main/knob.c b/main/knob.c
index 18fe32e..74d85b3 100644
--- a/main/knob.c
+++ b/main/knob.c
@@ -8,8 +8,8 @@ const int pushPin = 5;
 const int wheelPin1 = 18;
 const int wheelPin2 = 23;
 
-#define DEBOUNCE_WHEEL_MS 3
-#define DEBOUNCE_BTN_MS 10
+#define DEBOUNCE_WHEEL_MS 2
+#define DEBOUNCE_BTN_MS 5
 
 static void debounce_service(void *arg);
 static TaskHandle_t hDebouncer;
@@ -36,9 +36,9 @@ static void __attribute__((noreturn)) debounce_service(void *arg) {
     };
 
     struct debo state[3] = {
-        {.debo_time = pdMS_TO_TICKS(DEBOUNCE_BTN_MS)},   // push
-        {.debo_time = pdMS_TO_TICKS(DEBOUNCE_WHEEL_MS)}, // wheel input 1
-        {.debo_time = pdMS_TO_TICKS(DEBOUNCE_WHEEL_MS)}  // wheel input 2
+        {.debo_time = pdMS_TO_TICKS(DEBOUNCE_BTN_MS)}, // push
+        {.debo_time = pdMS_TO_TICKS(DEBOUNCE_WHEEL_MS), .state=1}, // wheel input 1
+        {.debo_time = pdMS_TO_TICKS(DEBOUNCE_WHEEL_MS), .state=1}  // wheel input 2
     };
 
     while (1) {