diff --git a/.gitignore b/.gitignore
index 495abed..9751c1c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,4 +1,219 @@
-__pycache__/
-*.pyc
-*.swp
+### Generated by gibo (https://github.com/simonwhitaker/gibo)
+### https://raw.github.com/github/gitignore/e5323759e387ba347a9d50f8b0ddd16502eb71d4/Python.gitignore
+
+# Byte-compiled / optimized / DLL files
+__pycache__/
+*.py[cod]
+*$py.class
+
+# C extensions
+*.so
+
+# Distribution / packaging
+.Python
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+.eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+wheels/
+share/python-wheels/
+*.egg-info/
+.installed.cfg
+*.egg
+MANIFEST
+
+# PyInstaller
+#  Usually these files are written by a python script from a template
+#  before PyInstaller builds the exe, so as to inject date/other infos into it.
+*.manifest
+*.spec
+
+# Installer logs
+pip-log.txt
+pip-delete-this-directory.txt
+
+# Unit test / coverage reports
+htmlcov/
+.tox/
+.nox/
+.coverage
+.coverage.*
+.cache
+nosetests.xml
+coverage.xml
+*.cover
+*.py,cover
+.hypothesis/
+.pytest_cache/
+cover/
+
+# Translations
+*.mo
+*.pot
+
+# Django stuff:
+*.log
+local_settings.py
+db.sqlite3
+db.sqlite3-journal
+
+# Flask stuff:
+instance/
+.webassets-cache
+
+# Scrapy stuff:
+.scrapy
+
+# Sphinx documentation
+docs/_build/
+
+# PyBuilder
+.pybuilder/
+target/
+
+# Jupyter Notebook
+.ipynb_checkpoints
+
+# IPython
+profile_default/
+ipython_config.py
+
+# pyenv
+#   For a library or package, you might want to ignore these files since the code is
+#   intended to run in multiple environments; otherwise, check them in:
+# .python-version
+
+# pipenv
+#   According to pypa/pipenv#598, it is recommended to include Pipfile.lock in version control.
+#   However, in case of collaboration, if having platform-specific dependencies or dependencies
+#   having no cross-platform support, pipenv may install dependencies that don't work, or not
+#   install all needed dependencies.
+#Pipfile.lock
+
+# poetry
+#   Similar to Pipfile.lock, it is generally recommended to include poetry.lock in version control.
+#   This is especially recommended for binary packages to ensure reproducibility, and is more
+#   commonly ignored for libraries.
+#   https://python-poetry.org/docs/basic-usage/#commit-your-poetrylock-file-to-version-control
+#poetry.lock
+
+# pdm
+#   Similar to Pipfile.lock, it is generally recommended to include pdm.lock in version control.
+#pdm.lock
+#   pdm stores project-wide configurations in .pdm.toml, but it is recommended to not include it
+#   in version control.
+#   https://pdm.fming.dev/#use-with-ide
+.pdm.toml
+
+# PEP 582; used by e.g. github.com/David-OConnor/pyflow and github.com/pdm-project/pdm
+__pypackages__/
+
+# Celery stuff
+celerybeat-schedule
+celerybeat.pid
+
+# SageMath parsed files
+*.sage.py
+
+# Environments
+.env
+.venv
+env/
+venv/
+ENV/
+env.bak/
+venv.bak/
+
+# Spyder project settings
+.spyderproject
+.spyproject
+
+# Rope project settings
+.ropeproject
+
+# mkdocs documentation
+/site
+
+# mypy
+.mypy_cache/
+.dmypy.json
+dmypy.json
+
+# Pyre type checker
+.pyre/
+
+# pytype static type analyzer
+.pytype/
+
+# Cython debug symbols
+cython_debug/
+
+# PyCharm
+#  JetBrains specific template is maintained in a separate JetBrains.gitignore that can
+#  be found at https://github.com/github/gitignore/blob/main/Global/JetBrains.gitignore
+#  and can be added to the global gitignore or merged into this file.  For a more nuclear
+#  option (not recommended) you can uncomment the following to ignore the entire idea folder.
+#.idea/
+
+
+### https://raw.github.com/github/gitignore/e5323759e387ba347a9d50f8b0ddd16502eb71d4/Global/macOS.gitignore
+
+# General
+.DS_Store
+.AppleDouble
+.LSOverride
+
+# Icon must end with two \r
+Icon
+
+
+# Thumbnails
+._*
+
+# Files that might appear in the root of a volume
+.DocumentRevisions-V100
+.fseventsd
+.Spotlight-V100
+.TemporaryItems
+.Trashes
+.VolumeIcon.icns
+.com.apple.timemachine.donotpresent
+
+# Directories potentially created on remote AFP share
+.AppleDB
+.AppleDesktop
+Network Trash Folder
+Temporary Items
+.apdisk
+
+
+### https://raw.github.com/github/gitignore/e5323759e387ba347a9d50f8b0ddd16502eb71d4/Global/Vim.gitignore
+
+# Swap
+[._]*.s[a-v][a-z]
+!*.svg  # comment out if you don't need vector files
+[._]*.sw[a-p]
+[._]s[a-rt-v][a-z]
+[._]ss[a-gi-z]
+[._]sw[a-p]
+
+# Session
+Session.vim
+Sessionx.vim
+
+# Temporary
+.netrwhist
+*~
+# Auto-generated tag files
+tags
+# Persistent undo
+[._]*.un~
+
 
diff --git a/__main__.py b/__main__.py
index 6c65e1b..efb4182 100755
--- a/__main__.py
+++ b/__main__.py
@@ -1,90 +1,11 @@
 #! /usr/bin/env python3
-from serial import Serial
 from argparse import ArgumentParser
-from time import sleep
-
-
-# w == escape
-# | == carriage return
-POWER_SAVE_ON = "w1PSAV|"
-POWER_SAVE_OFF = "w0PSAV|"
-POWER_SAVE = "wpsav|"
-INPUT = lambda x: f"{x}!"
-
-EDIDS = {
-    "automatic": 0,
-    "1280x800": 14,
-    "720p60": 34,
-    "1080p60": 45,
-}
-
-ERRORS = {
-    "E01": "Invalid input number",
-    "E06": "Invalid switch attempt in this mode",
-    "E10": "Invalid command",
-    "E11": "Invalid preset number",
-    "E12": "Invalid port number",
-    "E13": "Invalid parameter",
-    "E14": "Not valid for this configuration",
-    "E17": "Invalid command for signal type",
-    "E22": "Busy",
-}
+from projector import ProjectorSerial
+from extron import ExtronSerial
 
 verbose = False
 
 
-def send_command(command: str) -> str:
-    with Serial("/dev/serial/by-id/usb-Extron_Product-if00", 9600, timeout=1) as ser:
-        if verbose:
-            print("Send:", command)
-
-        ser.write(command.encode())
-        # response = ser.readline().decode().strip()
-        response = None
-
-        while not (response := ser.readline()):
-            pass
-        response = response.decode().strip()
-
-        if verbose:
-            print("Resp:", response)
-        if not response:
-            print("no reponse")
-            exit(1)
-        if response[0] == "E":
-            print(response, ERRORS.get(response, "Unknown"))
-            exit(1)
-
-    return response
-
-
-def send_command_projector(command: str) -> str:
-    with Serial("/dev/serial0", 9600, timeout=1) as ser:
-        ser.write(command.encode())
-        response = ser.readline()
-
-        if response:
-            print(response.decode())
-
-
-def check_power_save():
-    resp = send_command(POWER_SAVE)
-
-    return int(resp)
-
-
-def sleep_extron():
-    send_command(POWER_SAVE_ON)
-
-
-def wake():
-    send_command(POWER_SAVE_OFF)
-
-
-def change_input(input: int):
-    send_command(INPUT(input))
-
-
 if __name__ == "__main__":
     parser = ArgumentParser()
 
@@ -105,16 +26,14 @@ if __name__ == "__main__":
 
     verbose = args.verbose
 
-    if args.input:
-        send_command_projector("\x02ADZZ;PON\x03")
-        wake()
-        change_input(args.input)
+    proj = ProjectorSerial()
+    extr = ExtronSerial()
 
-        if verbose:
-            print("Waking projector")
-        #send_command_projector("\x02ADZZ;PON\x03")
+    if args.input:
+        proj.power_on()
+        extr.wake()
+        extr.change_input(args.input)
 
     elif args.sleep:
-        send_command_projector("\x02ADZZ;POF\x03")
-
-        sleep_extron()
+        proj.power_off()
+        extr.sleep()
diff --git a/extron.py b/extron.py
new file mode 100644
index 0000000..2466a3b
--- /dev/null
+++ b/extron.py
@@ -0,0 +1,88 @@
+# w == escape
+# | == carriage return
+from types import LambdaType
+from typing import Callable
+from serialdevice import SerialDevice
+
+# \x1b == ESC
+C: Callable[[str], str] = lambda command: f"\x1b{command}\r"
+
+
+class ExtronSerial(SerialDevice):
+    ERRORS = {
+        "E01": "Invalid input number",
+        "E06": "Invalid switch attempt in this mode",
+        "E10": "Invalid command",
+        "E11": "Invalid preset number",
+        "E12": "Invalid port number",
+        "E13": "Invalid parameter",
+        "E14": "Not valid for this configuration",
+        "E17": "Invalid command for signal type",
+        "E22": "Busy",
+    }
+
+    EDIDS = {
+        "automatic": 0,
+        "1280x800": 14,
+        "720p60": 34,
+        "1080p60": 45,
+    }
+
+    # w == escape
+    # | == carriage return
+
+    def __init__(self) -> None:
+        serial_port = "/dev/serial/by-id/usb-Extron_Product-if00"
+        baudrate = 9600
+        super().__init__(serial_port, baudrate)
+
+    def send_command(self, command: str, verbose: bool = False) -> str:
+        response = super().send_command(command, verbose)
+
+        if response[0] == "E":
+            print(response, self.ERRORS.get(response, "Unknown"))
+
+        return response
+
+    def sleep(self) -> None:
+        self.send_command(C("1PSAV"))
+
+    def wake(self) -> None:
+        self.send_command(C("0PSAV"))
+
+    def change_input(self, input: int) -> None:
+        self.send_command(f"{input}!")
+
+    def is_sleeping(self) -> bool:
+        response = self.send_command(C("PSAV"))
+
+        return bool(int(response))
+
+    def volume_up(self) -> int:
+        volume = self.send_command("+V")
+        return int(volume[3:])
+
+    def volume_down(self) -> int:
+        volume = self.send_command("-V")
+        return int(volume[3:])
+
+    def current_volume(self) -> int:
+        return int(self.send_command("V"))
+
+    def menu_toggle(self) -> None:
+        self.send_command(C("MMENU"))
+
+    def menu_enter(self) -> None:
+        self.send_command(C("EMENU"))
+
+    def menu_up(self) -> None:
+        self.send_command(C("UMENU"))
+
+    def menu_down(self) -> None:
+        self.send_command(C("DMENU"))
+
+    def menu_left(self) -> None:
+        self.send_command(C("LMENU"))
+
+    def menu_right(self) -> None:
+        self.send_command(C("RMENU"))
diff --git a/poetry.lock b/poetry.lock
new file mode 100644
index 0000000..b893c84
--- /dev/null
+++ b/poetry.lock
@@ -0,0 +1,21 @@
+[[package]]
+name = "pyserial"
+version = "3.5"
+description = "Python Serial Port Extension"
+category = "main"
+optional = false
+python-versions = "*"
+
+[package.extras]
+cp2110 = ["hidapi"]
+
+[metadata]
+lock-version = "1.1"
+python-versions = "^3.9"
+content-hash = "8b78a1177d4e0e35d0b7629d05be94849e8563c39f4bb985609872502bc45f32"
+
+[metadata.files]
+pyserial = [
+    {file = "pyserial-3.5-py2.py3-none-any.whl", hash = "sha256:c4451db6ba391ca6ca299fb3ec7bae67a5c55dde170964c7a14ceefec02f2cf0"},
+    {file = "pyserial-3.5.tar.gz", hash = "sha256:3c77e014170dfffbd816e6ffc205e9842efb10be9f58ec16d3e8675b4925cddb"},
+]
diff --git a/projector.py b/projector.py
index 372e0ae..09f17cf 100644
--- a/projector.py
+++ b/projector.py
@@ -1,12 +1,25 @@
-from serial import Serial
+from serialdevice import SerialDevice
 
 STX = chr(0x02)
 ETX = chr(0x03)
 
-if __name__ == "__main__":
-    with Serial("/dev/ttyAMA0", 9600, timeout=1) as ser:
-        ser.write((STX + "ADZZ" + ";" + "PON" + ETX).encode())
-        while not (response := ser.readline()):
-            pass
-        print(response)
-                
+
+class ProjectorSerial(SerialDevice):
+    def __init__(self) -> None:
+        serial_port = "/dev/serial0"
+        baudrate = 9600
+
+        super().__init__(serial_port, baudrate)
+
+    def send_command(self, command: str, verbose: bool = False, device_id: str = "ZZ"):
+        assert device_id in ["01", "02", "03", "04", "05", "06", "ZZ"]
+
+        full_command = f"\x02AD{device_id};{command}\x03"
+
+        return super().send_command(full_command, verbose)
+
+    def power_on(self):
+        self.send_command("PON")
+
+    def power_off(self):
+        self.send_command("POF")
diff --git a/pyproject.toml b/pyproject.toml
new file mode 100644
index 0000000..ac860b9
--- /dev/null
+++ b/pyproject.toml
@@ -0,0 +1,15 @@
+[tool.poetry]
+name = "ProjectorPi"
+version = "0.1.0"
+description = ""
+authors = ["Marijn Doeve <marijn@doeve.me>"]
+
+[tool.poetry.dependencies]
+python = "^3.9"
+pyserial = "^3.5"
+
+[tool.poetry.dev-dependencies]
+
+[build-system]
+requires = ["poetry-core>=1.0.0"]
+build-backend = "poetry.core.masonry.api"
diff --git a/serialdevice.py b/serialdevice.py
new file mode 100644
index 0000000..d568046
--- /dev/null
+++ b/serialdevice.py
@@ -0,0 +1,33 @@
+from doctest import REPORT_CDIFF
+from serial import Serial
+
+
+class SerialDevice:
+    def __init__(self, serial_port: str, baudrate: int = 9600) -> None:
+        self.serial_port: str = serial_port
+        self.baudrate = baudrate
+
+    def send_command(self, command: str, verbose: bool = False):
+        with Serial(self.serial_port, self.baudrate, timeout=1) as s:
+            if verbose:
+                print("Send:", command)
+
+            s.write(command.encode())
+
+            response_raw = None
+
+            count = 0
+            while count < 10 and not (response_raw := s.readline()):
+                pass
+
+            if response_raw:
+                response = response_raw.decode().strip()
+            else:
+                response = ""
+
+            if verbose:
+                print("Resp:", response)
+            if not response:
+                print("No response")
+
+            return response