diff --git a/smarttv.py b/smarttv.py
new file mode 100644
index 0000000..21dd4a7
--- /dev/null
+++ b/smarttv.py
@@ -0,0 +1,87 @@
+import serial
+import time
+import sys
+
+SERIAL_PORT = '/dev/ttyUSB0'
+BAUD_RATE = 19200
+
+SMARTTV_HELP = b'?\r'
+SMARTTV_ON = b'on\r'
+SMARTTV_OFF = b'off\r'
+SMARTTV_GET_MUTE = b'get mute\r'
+SMARTTV_MUTE = b'set mute=on\r'
+SMARTTV_UNMUTE = b'set mute=off\r'
+SMARTTV_GET_STATE = b'get powerstate\r'
+SMARTTV_GET_VOLUME = b'get volume\r'
+SMARTTV_SET_VOLUME = b'set volume=%d\r'
+SMARTTV_GET_POWERSTATE = b'get powerstate\r'
+SMARTTV_GET_INPUT = b'get input\r'
+SMARTTV_SET_INPUT_HDMI = b'set input=hdmi1\r'
+SMARTTV_SET_INPUT_OPS= b'set input=ops/hdmi2\r'
+
+def send_command(command):
+    with serial.Serial(SERIAL_PORT, BAUD_RATE, timeout=1) as ser:
+        ser.write(command)
+        time.sleep(0.1)
+        reply = ser.read(100)
+        return reply.decode('utf-8')
+
+if __name__ == "__main__":
+    if len(sys.argv) != 2:
+        print("Usage: python3 smarttv.py [power_on|power_off|get_volume|set_volume=volume]")
+        sys.exit(1)
+
+    command = sys.argv[1]
+
+    if command == "help":
+        print(send_command(SMARTTV_HELP))
+
+    elif command == "power_on":
+        print(send_command(SMARTTV_ON))
+
+    elif command == "power_off":
+        print(send_command(SMARTTV_OFF))
+
+    elif command == "get_state":
+        print(send_command(SMARTTV_GET_STATE))
+
+    elif command == "get_volume":
+        print(send_command(SMARTTV_GET_VOLUME))
+
+    elif command == "set_volume":
+        if len(sys.argv) != 3:
+            print("Usage: python3 smarttv.py set_volume volume")
+            sys.exit(1)
+        
+        volume = int(sys.argv[2])
+        if not 0 <= volume <= 100:
+            print("Volume must be between 0 and 100")
+            sys.exit(1)
+
+        volume_command = SMARTTV_SET_VOLUME % volume
+        print(send_command(volume_command))
+
+    elif command == "get_mute":
+        print(send_command(SMARTTV_GET_MUTE))
+
+    elif command == "mute":
+        print(send_command(SMARTTV_MUTE))
+
+    elif command == "unmute":
+        print(send_command(SMARTTV_UNMUTE))
+
+    elif command == "get_powerstate":
+        print(send_command(SMARTTV_GET_POWERSTATE))
+
+    elif command == "get_input":
+        print(send_command(SMARTTV_GET_INPUT))
+
+    elif command == "set_input_hdmi":
+        print(send_command(SMARTTV_SET_INPUT_HDMI))
+
+    elif command == "set_input_ops":
+        print(send_command(SMARTTV_SET_INPUT_OPS))
+
+    else:
+        print("Invalid command. Usage: python3 smarttv.py [power_on|power_off|get_volume|set_volume=volume]")
+        sys.exit(1)