diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..74235c6
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,177 @@
+**/*_venv
+**/.idea
+*.log
+**/__pycache__
+**/.DS_Store
+**/out
+**/.vscode
+**/.pytest_cache
+**/*.egg*
+
+# file writer data
+**.h5
+
+# 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/
+docs/**/autodoc/
+docs/**/_autosummary/
+
+# PyBuilder
+.pybuilder/
+target/
+
+# Jupyter Notebook
+.ipynb_checkpoints
+
+# IPython
+profile_default/
+ipython_config.py
+
+**.prof
+
+# 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/
diff --git a/services/NIDAQ_writer/NIDAQ_writer.py b/services/NIDAQ_writer/NIDAQ_writer.py
new file mode 100644
index 0000000..ecad909
--- /dev/null
+++ b/services/NIDAQ_writer/NIDAQ_writer.py
@@ -0,0 +1,179 @@
+from __future__ import annotations
+
+import queue
+import threading
+import time
+from typing import List
+
+import h5py
+import numpy as np
+from bec_lib.core import (
+    BECMessage,
+    MessageEndpoints,
+    RedisConnector,
+    ServiceConfig,
+    bec_logger,
+)
+from bec_lib.core.bec_service import BECService
+
+logger = bec_logger.logger
+
+
+class NIDAQWriterService(BECService):
+    """
+    A service that receives data from the NIDAQ through Redis and writes it continuously to a file.
+    """
+
+    reshape_dataset = True
+    use_redis_stream = False
+
+    def __init__(self, config: ServiceConfig, connector_cls: RedisConnector) -> None:
+        super().__init__(config=config, connector_cls=connector_cls, unique_service=True)
+        self.queue = queue.Queue()
+        self._scan_status_consumer = None
+        self._ni_data_consumer = None
+        self._ni_data_event = None
+        self._ni_writer = None
+        self._ni_writer_event = None
+
+        self.elapsed_time = 0
+        self.start_time = 0
+        self._start_scan_status_consumer()
+        self._start_ni_data_consumer()
+        self._start_ni_writer()
+
+    def _start_scan_status_consumer(self) -> None:
+        """
+        Start the scan consumer.
+        """
+        self._scan_status_consumer = self.connector.consumer(
+            MessageEndpoints.scan_status(), cb=self._scan_status_callback, parent=self
+        )
+        self._scan_status_consumer.start()
+
+    @staticmethod
+    def _scan_status_callback(message: BECMessage, parent: NIDAQWriterService) -> None:
+        """
+        Callback for scan status messages.
+        """
+        msg = BECMessage.ScanStatusMessage.loads(message.value)
+        if not msg:
+            return
+        parent.handle_scan_status(msg)
+
+    def _start_ni_data_consumer(self) -> None:
+        """
+        Start the NI data consumer.
+        """
+
+        self._ni_data_event = threading.Event()
+        self._ni_data_consumer = threading.Thread(target=self._read_data, daemon=True)
+        self._ni_data_consumer.start()
+
+    def _start_ni_writer(self) -> None:
+        """
+        Start the NI data writer.
+        """
+        self._ni_writer_event = threading.Event()
+        self._ni_writer = threading.Thread(target=self._write_data, daemon=True)
+        self._ni_writer.start()
+
+    def _read_data(self):
+        """
+        Read data from Redis.
+        """
+        while not self._ni_data_event.is_set():
+            start_time = time.time()
+            if self.use_redis_stream:
+                msg = self.producer.xread("ni_data")
+
+                if msg:
+                    num_msgs = len(msg[0][1])
+                    print(f"Received {num_msgs} messages in {time.time() - start_time} seconds")
+                    msgs = [BECMessage.DeviceMessage.loads(m[1][b"device_msg"]) for m in msg[0][1]]
+                    start_time = time.time()
+                    self.handle_ni_data(msgs)
+                    print(f"Handled {num_msgs} messages in {time.time() - start_time} seconds")
+                time.sleep(0.01)
+            else:
+                msgs = self.producer.r.lpop("ni_data:val", 20)
+                # time.sleep(0.001)
+                # if msgs:
+                #     msgs = [BECMessage.DeviceMessage.loads(msg) for msg in msgs]
+                #     print(f"Received {len(msgs)} messages in {time.time() - start_time} seconds")
+                #     start_time = time.time()
+                #     self.handle_ni_data(msgs)
+                #     print(f"Handled {len(msgs)} messages in {time.time() - start_time} seconds")
+
+    def handle_scan_status(self, msg: BECMessage.ScanStatusMessage) -> None:
+        """
+        Handle scan status messages.
+
+        Args:
+            msg: The scan status message.
+        """
+
+    def handle_ni_data(self, msgs: List[BECMessage.DeviceMessage]) -> None:
+        """
+        Receive NI data messages and write them to the writer queue.
+
+        Args:
+            msgs: The NI data messages.
+        """
+        logger.info(f"Received {len(msgs)} NI data messages")
+
+        # concatenate all messages
+        signals = {}
+
+        for key in msgs[0].content["signals"]:
+            signals[key] = np.concatenate([msg.content["signals"][key] for msg in msgs])
+
+        # write data to queue
+        self.queue.put(signals)
+
+    def _write_data(self) -> None:
+        """
+        Get data from the writer queue and write it to disk.
+        """
+        while not self._ni_writer_event.is_set():
+            signals = self.queue.get()
+            logger.info(f"Remaining tasks: {self.queue.qsize()}")
+            self.write_data(signals)
+            self.queue.task_done()
+
+    def write_data(self, signals: dict) -> None:
+        """
+        Write data to disk.
+
+        Args:
+            signals: The signals to write to disk.
+        """
+        # create a new file if it doesn't exist, otherwise append to it
+        logger.info("Writing NI data to HDF5 file")
+        start_time = time.time()
+        with h5py.File("test_output_no_comp_2.h5", "a") as file:
+            if self.reshape_dataset:
+                for key in signals:
+                    # if the dataset already exists, append to it
+                    if key in file:
+                        dataset = file[key]
+                        dataset.resize(dataset.shape[0] + len(signals[key]), axis=0)
+                        dataset[-len(signals[key]) :] = signals[key]
+                    # otherwise create a new dataset
+                    else:
+                        file.create_dataset(key, data=signals[key], chunks=True, maxshape=(None,))
+            else:
+                # get all group names
+                group_names = list(file.keys())
+
+                # get max dataset number
+                dataset_num = [int(name.split("_")[1]) for name in group_names if "dataset" in name]
+
+                if dataset_num:
+                    dataset_num = max(dataset_num) + 1
+                else:
+                    dataset_num = 0
+                group = file.create_group(f"dataset_{dataset_num}")
+                for key in signals:
+                    group.create_dataset(key, data=signals[key], chunks=True, maxshape=(None,))
+        logger.info(f"Finished writing NI data in {time.time() - start_time} seconds")
diff --git a/services/NIDAQ_writer/__init__.py b/services/NIDAQ_writer/__init__.py
new file mode 100644
index 0000000..86b902b
--- /dev/null
+++ b/services/NIDAQ_writer/__init__.py
@@ -0,0 +1 @@
+from .NIDAQ_writer import NIDAQWriterService
diff --git a/services/NIDAQ_writer/utils/nidaq_sim.py b/services/NIDAQ_writer/utils/nidaq_sim.py
new file mode 100644
index 0000000..c1870ed
--- /dev/null
+++ b/services/NIDAQ_writer/utils/nidaq_sim.py
@@ -0,0 +1,55 @@
+import threading
+import time
+
+import numpy as np
+from bec_lib.core import (
+    BECMessage,
+    MessageEndpoints,
+    RedisConnector,
+    ServiceConfig,
+    bec_logger,
+)
+
+
+class NIDAQSim(threading.Thread):
+    use_redis_stream = False
+
+    def run(self):
+        print("NIDAQSim running")
+        index = 0
+        producer = RedisConnector(["localhost:6379"]).producer()
+        signal = np.asarray(range(index, index + 600000))
+        signals = {
+            "signal1": signal,
+            "signal2": signal,
+        }
+
+        msg = BECMessage.DeviceMessage(signals=signals)
+        msg = msg.dumps()
+        BECMessage.DeviceMessage.loads(msg)
+        total_time = time.time()
+        while True:
+            if index > 1000:
+                break
+            start = time.time()
+            # signals = {
+            #     "signal1": np.asarray(range(index, index + 300000)),
+            #     "signal2": np.asarray(range(index, index + 300000)),
+            # }
+
+            index += 1
+
+            if self.use_redis_stream:
+                producer.xadd("ni_data:val", {"device_msg": msg}, max_size=100)
+            else:
+                producer.lpush("ni_data", msg, max_size=10)
+
+            # time.sleep(0.005)
+            print(f"Elapsed time: {time.time() - start}")
+        print(f"Total time: {time.time() - total_time}")
+        print(f"FPS: {index / (time.time() - total_time)}")
+        print(f"Signal size: {signal.nbytes/1e6*2} MB")
+
+
+if __name__ == "__main__":
+    NIDAQSim().start()
diff --git a/services/launch_writer.py b/services/launch_writer.py
new file mode 100644
index 0000000..4c8dc6a
--- /dev/null
+++ b/services/launch_writer.py
@@ -0,0 +1,33 @@
+import argparse
+import threading
+
+from bec_lib.core import RedisConnector, ServiceConfig, bec_logger
+from NIDAQ_writer import NIDAQWriterService
+
+parser = argparse.ArgumentParser(formatter_class=argparse.ArgumentDefaultsHelpFormatter)
+parser.add_argument(
+    "--config",
+    default="",
+    help="path to the config file",
+)
+clargs = parser.parse_args()
+config_path = clargs.config
+
+config = ServiceConfig(config_path)
+bec_logger.level = bec_logger.LOGLEVEL.INFO
+logger = bec_logger.logger
+
+bec_server = NIDAQWriterService(
+    config=config,
+    connector_cls=RedisConnector,
+)
+try:
+    event = threading.Event()
+    # pylint: disable=E1102
+    logger.success("Started NIDAQ writer service")
+    event.wait()
+except KeyboardInterrupt as e:
+    # bec_server.connector.raise_error("KeyboardInterrupt")
+    bec_server.shutdown()
+    event.set()
+    raise e