diff --git a/credentials.txt b/credentials.txt
new file mode 100644
index 0000000..ed3b07f
--- /dev/null
+++ b/credentials.txt
@@ -0,0 +1 @@
+foo:bar
\ No newline at end of file
diff --git a/dummygpio.py b/dummygpio.py
new file mode 100644
index 0000000..b9d2811
--- /dev/null
+++ b/dummygpio.py
@@ -0,0 +1,46 @@
+import time
+
+HIGH = True
+LOW = False
+IN = 0
+PUD_UP = None
+DUMMY_FALLING_EDGE = "FALLING"
+CHANGE_PIN_VALUE_AFTER = 8  # Transition to HIGH after 5 seconds
+BCM = 0
+FALLING = None
+pull_up_down = {PUD_UP: DUMMY_FALLING_EDGE}
+state = HIGH
+pin_last_change = {}
+
+
+def setwarnings(value):
+    pass
+
+
+def setmode(mode):
+    pass
+
+
+def cleanup():
+    pass
+
+
+def setup(pin, direction, **kwargs):
+    pin_last_change[pin] = time.time()
+
+
+def input(pin):
+    last_change = pin_last_change.get(pin, 0)
+    current = time.time()
+
+    if current - last_change >= CHANGE_PIN_VALUE_AFTER:
+        pin_last_change[pin] = current
+        return HIGH
+
+    return LOW
+
+
+def add_event_detect(pin, edge, callback, **kwargs):
+    pin_last_change[pin] = time.time()
+    if edge == FALLING:
+        callback(pin)
diff --git a/kukuc-clock.py b/kukuc-clock.py
index b72d292..ba047b7 100644
--- a/kukuc-clock.py
+++ b/kukuc-clock.py
@@ -1,11 +1,18 @@
-import RPi.GPIO as GPIO
+import signal
+import sys
 import time
 from datetime import datetime
 import subprocess
-import sys
 from slovak_datetime_formatter import get_datetime_as_slovak_sentence
 
-BUTTON_TIMEOUT = 30  # pressing and holding the button longer then e.g. 2 seconds terminates playing
+if len(sys.argv) > 1 and sys.argv[1] == "test":
+    import dummygpio as GPIO
+else:
+    import RPi.GPIO as GPIO
+
+BUTTON_TIMEOUT = (
+    30  # pressing and holding the button longer then e.g. 2 seconds terminates playing
+)
 PIN = 17  # listen to changes on this GPIO
 GPIO.setmode(GPIO.BCM)  # use BCM pin layout
 GPIO.setwarnings(False)
@@ -14,12 +21,14 @@ GPIO.setwarnings(False)
 def setup_pin():
     GPIO.setup(PIN, GPIO.IN, pull_up_down=GPIO.PUD_UP)
 
+
 def terminate_playing(proc):
     print("Terminating playing...")
     proc.terminate()
     proc.wait(timeout=5)
     print("Terminated")
 
+
 def play_presny_cas():
     print("Playing presny_cas.wav")
     proc = subprocess.Popen(["aplay", "presny_cas.wav"])
@@ -27,20 +36,41 @@ def play_presny_cas():
     print("GPIO went HIGH - terminating playing")
     terminate_playing(proc)
 
+
 def play_beep():
     print("Playing beep.wav")
     subprocess.call(["aplay", "beep.wav"])
 
+
+def get_credentials():
+    with open("credentials.txt") as f:
+        cred_line = f.readline().strip()
+        username, password = cred_line.split(":")
+
+    return username, password
+
+
 def generate_presny_cas():
     text = get_datetime_as_slovak_sentence(datetime.now())
-    print(f"Generating presny_cas.wav for '{text}'")
+    print(f"Generating presny_cas.wav for '{text}' using a remote API call")
+    username, password = get_credentials()
     subprocess.call(
         [
-            "curl", "--silent", "--get", "--data-urlencode", f"text={text}", "https://tts.virtonline.eu/api/tts", "--output", "presny_cas.wav",
+            "curl",
+            "--silent",
+            "-u",
+            f"{username}:{password}",
+            "--get",
+            "--data-urlencode",
+            f"text={text}",
+            "https://tts.virtonline.eu/api/tts",
+            "--output",
+            "presny_cas.wav",
         ]
     )
     print("Generated presny_cas.wav")
 
+
 def wait_for_button_release_or_timeout(pin, timeout):
     timeout_start = time.time()
     while time.time() < timeout_start + timeout:
@@ -54,6 +84,15 @@ def handle_pin(pin):
     generate_presny_cas()
     play_presny_cas()
 
+
+def signal_handler(sig, frame):
+    print("Interrupt received, cleaning up!")
+    GPIO.cleanup()
+    sys.exit(0)
+
+
+signal.signal(signal.SIGINT, signal_handler)
+
 try:
     setup_pin()
     play_beep()
@@ -62,8 +101,9 @@ try:
     print(f"Waiting for the GPIO {PIN} to go LOW...")
     while True:
         time.sleep(0.01)
-except Exception:
-    print("Cought exception...")
-    sys.exit()
+
+except Exception as e:
+    print("Caught exception: ", e)
+
 finally:
     GPIO.cleanup()
diff --git a/presny_cas.wav b/presny_cas.wav
index 1b87f41..1d416bf 100644
Binary files a/presny_cas.wav and b/presny_cas.wav differ