diff --git a/HIB.cpp b/HIB.cpp
index 46a6c5f..6218a92 100644
--- a/HIB.cpp
+++ b/HIB.cpp
@@ -34,17 +34,24 @@ static void (*ISRList[MAX_PIN+1])() = {
 };
 
 void __timerCallback(void *data) {
+	Serial.printf("%s\n", __func__);
 	HIB *hib = static_cast<HIB *>(data);
 	hib->debouncing = false;
 	hib->invertState();
+	Serial.printf("New State %d \n", hib->state);
 	if (hib->state != digitalRead(hib->pin)){
 		hib->state = !hib->state;
+		Serial.printf("%s. Debounce failed\n", __func__);
 		return;
 	}
-	if(hib->state != hib->initialState)
+	if(hib->state != hib->initialState){
+		Serial.printf("Button Pressed\n");
 		hib->onInternalButtonPressed();
-	else
+	}
+	else{
+		Serial.printf("Button Released\n");
 		hib->onInternalButtonReleased();
+	}
 }
 
 
@@ -68,6 +75,7 @@ HIB::HIB(uint8_t p, uint8_t initState,
 	}
 
 void HIB::IRQ_handler(){
+	Serial.printf("IRQ_handler on pin %d, debouncing %d\n", pin, debouncing);
 	if(!debouncing){
 		debouncing = true;
 		os_timer_arm(&timer, shortPressMsec, 0);