diff --git a/debye_bec/devices/cameras/basler_cam.py b/debye_bec/devices/cameras/basler_cam.py
index c53fb29..fbf0477 100644
--- a/debye_bec/devices/cameras/basler_cam.py
+++ b/debye_bec/devices/cameras/basler_cam.py
@@ -6,6 +6,8 @@ from typing import TYPE_CHECKING
 
 from ophyd import ADBase
 from ophyd import ADComponent as ADCpt
+from ophyd import Component as Cpt
+from ophyd_devices import PreviewSignal
 from ophyd_devices.devices.areadetector.cam import AravisDetectorCam
 from ophyd_devices.devices.areadetector.plugins import ImagePlugin_V35
 
@@ -25,14 +27,10 @@ class BaslerCamBase(ADBase):
 class BaslerCam(DebyeBaseCamera, BaslerCamBase):
     """Basler camera class at Debye. IOC prefix: X01DA-ES-XRAYEYE:"""
 
-    def __init__(self, *, name: str, prefix: str = "", scan_info: ScanInfo | None = None, **kwargs):
-        """
-        Initialize the Prosilica camera class.
-
-        Args:
-            name (str): Name of the camera.
-            prefix (str): IOC prefix.
-            scan_info (ScanInfo): The scan info to use.
-        """
-        super().__init__(name=name, prefix=prefix, scan_info=scan_info, **kwargs)
-        self._n_rot90 = -1  # Rotate the image by -90 degrees
+    preview = Cpt(
+        PreviewSignal,
+        name="preview",
+        ndim=2,
+        num_rotation_90=3,
+        doc="Preview signal for the camera.",
+    )
diff --git a/debye_bec/devices/cameras/debye_base_cam.py b/debye_bec/devices/cameras/debye_base_cam.py
index ef3011b..601894c 100644
--- a/debye_bec/devices/cameras/debye_base_cam.py
+++ b/debye_bec/devices/cameras/debye_base_cam.py
@@ -7,7 +7,9 @@ from typing import TYPE_CHECKING
 
 import numpy as np
 from bec_lib.logger import bec_logger
+from ophyd import Component as Cpt
 from ophyd import DeviceStatus, StatusBase
+from ophyd_devices import PreviewSignal
 from ophyd_devices.interfaces.base_classes.psi_device_base import PSIDeviceBase
 from typeguard import typechecked
 
@@ -23,6 +25,13 @@ class DebyeBaseCamera(PSIDeviceBase):
     """Base class for Debye cameras."""
 
     USER_ACCESS = ["live_mode"]
+    preview = Cpt(
+        PreviewSignal,
+        name="preview",
+        ndim=2,
+        num_rotation_90=-1,
+        doc="Preview signal for the camera.",
+    )
 
     def __init__(self, *, name: str, prefix: str = "", scan_info: ScanInfo | None = None, **kwargs):
         super().__init__(name=name, prefix=prefix, scan_info=scan_info, **kwargs)
@@ -31,7 +40,6 @@ class DebyeBaseCamera(PSIDeviceBase):
         self._live_mode = False
         self._live_mode_event = None
         self._task_status = None
-        self._n_rot90 = -1
 
     @property
     def live_mode(self) -> bool:
@@ -82,8 +90,8 @@ class DebyeBaseCamera(PSIDeviceBase):
             width = self.image1.array_size.width.get()
             height = self.image1.array_size.height.get()
             # Geometry correction for the image
-            data = np.rot90(np.reshape(value, (height, width)), k=self._n_rot90, axes=(0, 1))
-            self._run_subs(sub_type=self.SUB_DEVICE_MONITOR_2D, value=data)
+            data = np.reshape(value, (height, width))
+            self.preview.put(data)
 
     ########################################
     #  Beamline Specific Implementations   #
diff --git a/debye_bec/devices/cameras/prosilica_cam.py b/debye_bec/devices/cameras/prosilica_cam.py
index a8cab07..69846dd 100644
--- a/debye_bec/devices/cameras/prosilica_cam.py
+++ b/debye_bec/devices/cameras/prosilica_cam.py
@@ -6,6 +6,8 @@ from typing import TYPE_CHECKING
 
 from ophyd import ADBase
 from ophyd import ADComponent as ADCpt
+from ophyd import Component as Cpt
+from ophyd_devices import PreviewSignal
 from ophyd_devices.devices.areadetector.cam import ProsilicaDetectorCam
 from ophyd_devices.devices.areadetector.plugins import ImagePlugin_V35
 
@@ -28,14 +30,10 @@ class ProsilicaCam(DebyeBaseCamera, ProsilicaCamBase):
     Prefixes are: X01DA-OP-GIGE02: and X01DA-OP-GIGE01:
     """
 
-    def __init__(self, *, name: str, prefix: str = "", scan_info: ScanInfo | None = None, **kwargs):
-        """
-        Initialize the Prosilica camera class.
-
-        Args:
-            name (str): Name of the camera.
-            prefix (str): IOC prefix.
-            scan_info (ScanInfo): The scan info to use.
-        """
-        super().__init__(name=name, prefix=prefix, scan_info=scan_info, **kwargs)
-        self._n_rot90 = -1  # Rotate the image by -90 degrees
+    preview = Cpt(
+        PreviewSignal,
+        name="preview",
+        ndim=2,
+        num_rotation_90=3,
+        doc="Preview signal for the camera.",
+    )
diff --git a/debye_bec/devices/mo1_bragg/mo1_bragg.py b/debye_bec/devices/mo1_bragg/mo1_bragg.py
index 50a659e..dca0b14 100644
--- a/debye_bec/devices/mo1_bragg/mo1_bragg.py
+++ b/debye_bec/devices/mo1_bragg/mo1_bragg.py
@@ -15,7 +15,8 @@ from bec_lib.devicemanager import ScanInfo
 from bec_lib.logger import bec_logger
 from ophyd import Component as Cpt
 from ophyd import DeviceStatus, Signal, StatusBase
-from ophyd.status import SubscriptionStatus
+from ophyd.status import SubscriptionStatus, WaitTimeoutError
+from ophyd_devices import CompareStatus, ProgressSignal, TransitionStatus
 from ophyd_devices.interfaces.base_classes.psi_device_base import PSIDeviceBase
 from ophyd_devices.utils.errors import DeviceStopError
 from pydantic import BaseModel, Field
@@ -81,6 +82,8 @@ class Mo1Bragg(PSIDeviceBase, Mo1BraggPositioner):
     The prefix to connect to the soft IOC is X01DA-OP-MO1:BRAGG:
     """
 
+    progress_signal = Cpt(ProgressSignal, name="progress_signal")
+
     USER_ACCESS = ["set_advanced_xas_settings", "set_xtal"]
 
     def __init__(self, name: str, prefix: str = "", scan_info: ScanInfo | None = None, **kwargs):  # type: ignore
@@ -93,7 +96,7 @@ class Mo1Bragg(PSIDeviceBase, Mo1BraggPositioner):
         """
         super().__init__(name=name, scan_info=scan_info, prefix=prefix, **kwargs)
         self.scan_parameter = ScanParameter()
-        self.timeout_for_pvwait = 2.5
+        self.timeout_for_pvwait = 7.5
 
     ########################################
     #  Beamline Specific Implementations   #
@@ -120,7 +123,10 @@ class Mo1Bragg(PSIDeviceBase, Mo1BraggPositioner):
 
         Information about the upcoming scan can be accessed from the scan_info (self.scan_info.msg) object.
         """
-        self._check_scan_msg(ScanControlLoadMessage.PENDING)
+        # self._check_scan_msg(ScanControlLoadMessage.PENDING)
+        status = CompareStatus(self.scan_control.scan_msg, ScanControlLoadMessage.PENDING)
+        self.cancel_on_stop(status)
+        status.wait(timeout=self.timeout_for_pvwait)
 
         scan_name = self.scan_info.msg.scan_name
         self._update_scan_parameter()
@@ -201,11 +207,9 @@ class Mo1Bragg(PSIDeviceBase, Mo1BraggPositioner):
         # Load the scan parameters to the controller
         self.scan_control.scan_load.put(1)
         # Wait for params to be checked from controller
-        self.wait_for_signal(
-            self.scan_control.scan_msg,
-            ScanControlLoadMessage.SUCCESS,
-            timeout=2 * self.timeout_for_pvwait,
-        )
+        status = CompareStatus(self.scan_control.scan_msg, ScanControlLoadMessage.SUCCESS)
+        self.cancel_on_stop(status)
+        status.wait(self.timeout_for_pvwait)
         return None
 
     def on_unstage(self) -> DeviceStatus | StatusBase | None:
@@ -213,32 +217,24 @@ class Mo1Bragg(PSIDeviceBase, Mo1BraggPositioner):
         if self.stopped is True:
             logger.warning(f"Resetting stopped in unstage for device {self.name}.")
             self._stopped = False
-        current_state = self.scan_control.scan_msg.get()
-        # Case 1, message is already ScanControlLoadMessage.PENDING
-        if current_state == ScanControlLoadMessage.PENDING:
-            return None
-        # Case 2, probably called after scan, backend should resolve on its own. Timeout to wait
-        if current_state in [ScanControlLoadMessage.STARTED, ScanControlLoadMessage.SUCCESS]:
+        if self.scan_control.scan_msg.get() in [
+            ScanControlLoadMessage.STARTED,
+            ScanControlLoadMessage.SUCCESS,
+        ]:
+            status = CompareStatus(self.scan_control.scan_msg, ScanControlLoadMessage.PENDING)
+            self.cancel_on_stop(status)
             try:
-                self.wait_for_signal(
-                    self.scan_control.scan_msg,
-                    ScanControlLoadMessage.PENDING,
-                    timeout=self.timeout_for_pvwait,
-                )
-                return
-            except TimeoutError:
+                status.wait(2)
+                return None
+            except WaitTimeoutError:
                 logger.warning(
                     f"Timeout in on_unstage of {self.name} after {self.timeout_for_pvwait}s, current scan_control_message : {self.scan_control.scan_msg.get()}"
                 )
-
-        def callback(*, old_value, value, **kwargs):
-            if value == ScanControlLoadMessage.PENDING:
-                return True
-            return False
-
-        status = SubscriptionStatus(self.scan_control.scan_msg, callback=callback)
-        self.scan_control.scan_val_reset.put(1)
-        status.wait(timeout=self.timeout_for_pvwait)
+        else:
+            status = CompareStatus(self.scan_control.scan_msg, ScanControlLoadMessage.PENDING)
+            self.cancel_on_stop(status)
+            self.scan_control.scan_val_reset.put(1)
+            status.wait(timeout=self.timeout_for_pvwait)
         return None
 
     def on_pre_scan(self) -> DeviceStatus | StatusBase | None:
@@ -249,20 +245,8 @@ class Mo1Bragg(PSIDeviceBase, Mo1BraggPositioner):
 
     def on_complete(self) -> DeviceStatus | StatusBase | None:
         """Called to inquire if a device has completed a scans."""
-
-        def wait_for_complete():
-            """Wait for the scan to complete. No timeout is set."""
-            start_time = time.time()
-            while True:
-                if self.stopped is True:
-                    raise DeviceStopError(
-                        f"Device {self.name} was stopped while waiting for scan to complete"
-                    )
-                if self.scan_control.scan_done.get() == 1:
-                    return
-                time.sleep(0.1)
-
-        status = self.task_handler.submit_task(wait_for_complete)
+        status = CompareStatus(self.scan_control.scan_done, 1)
+        self.cancel_on_stop(status)
         return status
 
     def on_kickoff(self) -> DeviceStatus | StatusBase | None:
@@ -274,13 +258,13 @@ class Mo1Bragg(PSIDeviceBase, Mo1BraggPositioner):
             if scan_duration < 0.1
             else self.scan_control.scan_start_timer.put
         )
-
-        def callback(*, old_value, value, **kwargs):
-            if old_value == ScanControlScanStatus.READY and value == ScanControlScanStatus.RUNNING:
-                return True
-            return False
-
-        status = SubscriptionStatus(self.scan_control.scan_status, callback=callback)
+        status = TransitionStatus(
+            self.scan_control.scan_status,
+            transitions=[ScanControlScanStatus.READY, ScanControlScanStatus.RUNNING],
+            strict=True,
+            raise_states=[ScanControlScanStatus.PARAMETER_WRONG],
+        )
+        self.cancel_on_stop(status)
         start_func(1)
         return status
 
@@ -289,9 +273,6 @@ class Mo1Bragg(PSIDeviceBase, Mo1BraggPositioner):
         self.stopped = True  # Needs to be set to stop motion
 
     ######### Utility Methods #########
-
-    # FIXME this should become the ProgressSignal
-    # pylint: disable=unused-argument
     def _progress_update(self, value, **kwargs) -> None:
         """Callback method to update the scan progress, runs a callback
         to SUB_PROGRESS subscribers, i.e. BEC.
@@ -300,12 +281,7 @@ class Mo1Bragg(PSIDeviceBase, Mo1BraggPositioner):
             value (int) : current progress value
         """
         max_value = 100
-        self._run_subs(
-            sub_type=self.SUB_PROGRESS,
-            value=value,
-            max_value=max_value,
-            done=bool(max_value == value),
-        )
+        self.progress_signal.put(value=value, max_value=max_value, done=bool(max_value == value))
 
     def set_xas_settings(self, low: float, high: float, scan_time: float) -> None:
         """Set XAS parameters for upcoming scan.
diff --git a/debye_bec/devices/mo1_bragg/mo1_bragg_devices.py b/debye_bec/devices/mo1_bragg/mo1_bragg_devices.py
index 37cd9ce..0977c17 100644
--- a/debye_bec/devices/mo1_bragg/mo1_bragg_devices.py
+++ b/debye_bec/devices/mo1_bragg/mo1_bragg_devices.py
@@ -82,10 +82,20 @@ class Mo1BraggCrystal(Device):
     d_spacing_si111 = Cpt(EpicsSignalWithRBV, suffix="d_spacing_si111", kind="config")
     d_spacing_si311 = Cpt(EpicsSignalWithRBV, suffix="d_spacing_si311", kind="config")
     set_offset = Cpt(EpicsSignal, suffix="set_offset", kind="config", put_complete=True)
+    current_d_spacing = Cpt(
+        EpicsSignalRO, suffix="current_d_spacing_RBV", kind="normal", auto_monitor=True
+    )
+    current_offset = Cpt(
+        EpicsSignalRO, suffix="current_offset_RBV", kind="normal", auto_monitor=True
+    )
     current_xtal = Cpt(
         EpicsSignalRO, suffix="current_xtal_ENUM_RBV", kind="normal", auto_monitor=True
     )
 
+    current_xtal_string = Cpt(
+        EpicsSignalRO, suffix="current_xtal_ENUM_RBV", kind="normal", auto_monitor=True, string=True
+    )
+
 
 class Mo1BraggScanSettings(Device):
     """Mo1 Bragg PVs to set the scan setttings"""
diff --git a/debye_bec/devices/nidaq/nidaq.py b/debye_bec/devices/nidaq/nidaq.py
index 8dc0d2e..e97a739 100644
--- a/debye_bec/devices/nidaq/nidaq.py
+++ b/debye_bec/devices/nidaq/nidaq.py
@@ -7,11 +7,12 @@ from bec_lib.logger import bec_logger
 from ophyd import Component as Cpt
 from ophyd import Device, DeviceStatus, EpicsSignal, EpicsSignalRO, Kind, StatusBase
 from ophyd.status import SubscriptionStatus, WaitTimeoutError
+from ophyd_devices import CompareStatus, ProgressSignal, TransitionStatus
 from ophyd_devices.interfaces.base_classes.psi_device_base import PSIDeviceBase
 from ophyd_devices.sim.sim_signals import SetableSignal
 
 from debye_bec.devices.nidaq.nidaq_enums import (
-    EncoderTypes,
+    EncoderFactors,
     NIDAQCompression,
     NidaqState,
     ReadoutRange,
@@ -309,6 +310,7 @@ class NidaqControl(Device):
 
     enc = Cpt(SetableSignal, value=0, kind=Kind.normal)
     energy = Cpt(SetableSignal, value=0, kind=Kind.normal)
+    rle = Cpt(SetableSignal, value=0, kind=Kind.normal)
 
     ### Control PVs ###
 
@@ -322,14 +324,14 @@ class NidaqControl(Device):
     sampling_rate = Cpt(EpicsSignal, suffix="NIDAQ-SamplingRateRequested", kind=Kind.config)
     scan_duration = Cpt(EpicsSignal, suffix="NIDAQ-SamplingDuration", kind=Kind.config)
     readout_range = Cpt(EpicsSignal, suffix="NIDAQ-ReadoutRange", kind=Kind.config)
-    encoder_type = Cpt(EpicsSignal, suffix="NIDAQ-EncoderType", kind=Kind.config)
+    encoder_factor = Cpt(EpicsSignal, suffix="NIDAQ-EncoderFactor", kind=Kind.config)
     stop_call = Cpt(EpicsSignal, suffix="NIDAQ-Stop", kind=Kind.config)
     power = Cpt(EpicsSignal, suffix="NIDAQ-Power", kind=Kind.config)
     heartbeat = Cpt(EpicsSignal, suffix="NIDAQ-Heartbeat", kind=Kind.config, auto_monitor=True)
     time_left = Cpt(EpicsSignalRO, suffix="NIDAQ-TimeLeft", kind=Kind.config, auto_monitor=True)
 
     ai_chans = Cpt(EpicsSignal, suffix="NIDAQ-AIChans", kind=Kind.config)
-    ci_chans = Cpt(EpicsSignal, suffix="NIDAQ-CIChans6614", kind=Kind.config)
+    ci_chans = Cpt(EpicsSignal, suffix="NIDAQ-CIChans", kind=Kind.config)
     di_chans = Cpt(EpicsSignal, suffix="NIDAQ-DIChans", kind=Kind.config)
 
 
@@ -342,6 +344,8 @@ class Nidaq(PSIDeviceBase, NidaqControl):
         scan_info (ScanInfo) : ScanInfo object passed by BEC's devicemanager.
     """
 
+    progress_signal = Cpt(ProgressSignal, name="progress_signal")
+
     USER_ACCESS = ["set_config"]
 
     def __init__(self, prefix: str = "", *, name: str, scan_info: ScanInfo = None, **kwargs):
@@ -459,12 +463,20 @@ class Nidaq(PSIDeviceBase, NidaqControl):
         elif readout_range == 10:
             self.readout_range.put(ReadoutRange.TEN_V)
 
-        if encoder_type in "X_1":
-            self.encoder_type.put(EncoderTypes.X_1)
-        elif encoder_type in "X_2":
-            self.encoder_type.put(EncoderTypes.X_2)
-        elif encoder_type in "X_4":
-            self.encoder_type.put(EncoderTypes.X_4)
+        if encoder_type in "1/16":
+            self.encoder_factor.put(EncoderFactors.X1_16)
+        elif encoder_type in "1/8":
+            self.encoder_factor.put(EncoderFactors.X1_8)
+        elif encoder_type in "1/4":
+            self.encoder_factor.put(EncoderFactors.X1_4)
+        elif encoder_type in "1/2":
+            self.encoder_factor.put(EncoderFactors.X1_2)
+        elif encoder_type in "1":
+            self.encoder_factor.put(EncoderFactors.X1)
+        elif encoder_type in "2":
+            self.encoder_factor.put(EncoderFactors.X2)
+        elif encoder_type in "4":
+            self.encoder_factor.put(EncoderFactors.X4)
 
         if enable_compression is True:
             self.enable_compression.put(NIDAQCompression.ON)
@@ -488,26 +500,21 @@ class Nidaq(PSIDeviceBase, NidaqControl):
         Called after the device is connected and its signals are connected.
         Default values for signals should be set here.
         """
-
-        def heartbeat_callback(*, old_value, value, **kwargs):
-            return ((old_value) == 0 and (value == 1)) or ((old_value) == 1 and (value == 0))
-
-        status = SubscriptionStatus(self.heartbeat, callback=heartbeat_callback)
+        status = TransitionStatus(self.heartbeat, transitions=[0, 1], strict=False)
+        self.cancel_on_stop(status)
         try:
             status.wait(timeout=self.timeout_wait_for_signal)  # Raises if timeout is reached
         except WaitTimeoutError:
+            logger.warning(f"Device {self.name} was not alive, trying to put power on")
+            status = TransitionStatus(self.heartbeat, transitions=[0, 1], strict=False)
+            self.cancel_on_stop(status)
             self.power.put(1)
 
         status.wait(timeout=self.timeout_wait_for_signal)
 
-        if not self.wait_for_condition(
-            condition=lambda: self.state.get() == NidaqState.STANDBY,
-            timeout=self.timeout_wait_for_signal,
-            check_stopped=True,
-        ):
-            raise NidaqError(
-                f"Device {self.name} has not been reached in state STANDBY, current state {NidaqState(self.state.get())}"
-            )
+        status = CompareStatus(self.state, NidaqState.STANDBY)
+        self.cancel_on_stop(status)
+        status.wait(timeout=self.timeout_wait_for_signal)
         self.scan_duration.set(0).wait(timeout=self._timeout_wait_for_pv)
         self.time_left.subscribe(self._progress_update, run=False)
 
@@ -521,14 +528,9 @@ class Nidaq(PSIDeviceBase, NidaqControl):
         if not self._check_if_scan_name_is_valid():
             return None
 
-        if not self.wait_for_condition(
-            condition=lambda: self.state.get() == NidaqState.STANDBY,
-            timeout=self.timeout_wait_for_signal,
-            check_stopped=True,
-        ):
-            raise NidaqError(
-                f"Device {self.name} has not been reached in state STANDBY, current state {NidaqState(self.state.get())}"
-            )
+        status = CompareStatus(self.state, NidaqState.STANDBY)
+        self.cancel_on_stop(status)
+        status.wait(timeout=self.timeout_wait_for_signal)
         # If scan is not part of the valid_scan_names,
         if self.scan_info.msg.scan_name != "nidaq_continuous_scan":
             self.scan_type.set(ScanType.TRIGGERED).wait(timeout=self._timeout_wait_for_pv)
@@ -543,18 +545,14 @@ class Nidaq(PSIDeviceBase, NidaqControl):
                 timeout=self._timeout_wait_for_pv
             )
 
+        # Stage call to IOC
+        status = CompareStatus(self.state, NidaqState.STAGE)
+        self.cancel_on_stop(status)
         self.stage_call.set(1).wait(timeout=self._timeout_wait_for_pv)
-
-        if not self.wait_for_condition(
-            condition=lambda: self.state.get() == NidaqState.STAGE,
-            timeout=self.timeout_wait_for_signal,
-            check_stopped=True,
-        ):
-            raise NidaqError(
-                f"Device {self.name} has not been reached in state STAGE, current state {NidaqState(self.state.get())}"
-            )
+        status.wait(timeout=self.timeout_wait_for_signal)
         if self.scan_info.msg.scan_name != "nidaq_continuous_scan":
             status = self.on_kickoff()
+            self.cancel_on_stop(status)
             status.wait(timeout=self._timeout_wait_for_pv)
         logger.info(f"Device {self.name} was staged: {NidaqState(self.state.get())}")
 
@@ -566,17 +564,12 @@ class Nidaq(PSIDeviceBase, NidaqControl):
     def on_unstage(self) -> DeviceStatus | StatusBase | None:
         """Called while unstaging the device. Check that the Nidaq goes into Standby"""
 
-        def _get_state():
-            return self.state.get() == NidaqState.STANDBY
-
-        # TODO We need to wait longer if rle is disabled
-        if not self.wait_for_condition(
-            condition=_get_state, timeout=self.timeout_wait_for_signal, check_stopped=False
-        ):
-            raise NidaqError(
-                f"Device {self.name} has not been reached in state STANDBY, current state {NidaqState(self.state.get())}"
-            )
-        self.enable_compression.set(1).wait(self._timeout_wait_for_pv)
+        status = CompareStatus(self.state, NidaqState.STANDBY)
+        self.cancel_on_stop(status)
+        status.wait(timeout=self.timeout_wait_for_signal)
+        status = self.enable_compression.set(1)
+        self.cancel_on_stop(status)
+        status.wait(self._timeout_wait_for_pv)
         logger.info(f"Device {self.name} was unstaged: {NidaqState(self.state.get())}")
 
     def on_pre_scan(self) -> DeviceStatus | StatusBase | None:
@@ -594,15 +587,9 @@ class Nidaq(PSIDeviceBase, NidaqControl):
             logger.info(f"Device {self.name} ready to be kicked off for nidaq_continuous_scan")
             return None
 
-        def _wait_for_state():
-            return self.state.get() == NidaqState.KICKOFF
-
-        if not self.wait_for_condition(
-            _wait_for_state, timeout=self.timeout_wait_for_signal, check_stopped=True
-        ):
-            raise NidaqError(
-                f"Device {self.name} failed to reach state KICKOFF during pre scan, current state {NidaqState(self.state.get())}"
-            )
+        status = CompareStatus(self.state, NidaqState.KICKOFF)
+        self.cancel_on_stop(status)
+        status.wait(timeout=self._timeout_wait_for_pv)
         logger.info(
             f"Device {self.name} ready to take data after pre_scan: {NidaqState(self.state.get())}"
         )
@@ -620,21 +607,10 @@ class Nidaq(PSIDeviceBase, NidaqControl):
         if not self._check_if_scan_name_is_valid():
             return None
 
-        def _check_state(self) -> bool:
-            while True:
-                if self.stopped is True:
-                    raise NidaqError(f"Device {self.name} was stopped")
-                if self.state.get() == NidaqState.STANDBY:
-                    return
-                # if time.time() > timeout_time:
-                #     raise TimeoutError(f"Device {self.name} ran into timeout")
-                time.sleep(0.1)
-
+        status = CompareStatus(self.state, NidaqState.STANDBY)
+        self.cancel_on_stop(status)
         if self.scan_info.msg.scan_name != "nidaq_continuous_scan":
             self.on_stop()
-            status = self.task_handler.submit_task(task=_check_state, task_args=(self,))
-        else:
-            status = self.task_handler.submit_task(task=_check_state, task_args=(self,))
         return status
 
     def _progress_update(self, value, **kwargs) -> None:
@@ -649,12 +625,7 @@ class Nidaq(PSIDeviceBase, NidaqControl):
             return
         value = scan_duration - value
         max_value = scan_duration
-        self._run_subs(
-            sub_type=self.SUB_PROGRESS,
-            value=value,
-            max_value=max_value,
-            done=bool(value == max_value),
-        )
+        self.progress_signal.put(value=value, max_value=max_value, done=bool(max_value == value))
 
     def on_stop(self) -> None:
         """Called when the device is stopped."""
diff --git a/debye_bec/devices/nidaq/nidaq_enums.py b/debye_bec/devices/nidaq/nidaq_enums.py
index 11755a2..14e4e5c 100644
--- a/debye_bec/devices/nidaq/nidaq_enums.py
+++ b/debye_bec/devices/nidaq/nidaq_enums.py
@@ -48,9 +48,13 @@ class ReadoutRange(int, enum.Enum):
     TEN_V = 3
 
 
-class EncoderTypes(int, enum.Enum):
-    """Encoder Types"""
+class EncoderFactors(int, enum.Enum):
+    """Encoder Factors"""
 
-    X_1 = 0
-    X_2 = 1
-    X_4 = 2
+    X1_16 = 0
+    X1_8 = 1
+    X1_4 = 2
+    X1_2 = 3
+    X1 = 4
+    X2 = 5
+    X4 = 6
diff --git a/debye_bec/file_writer/__init__.py b/debye_bec/file_writer/__init__.py
index e69de29..30ec638 100644
--- a/debye_bec/file_writer/__init__.py
+++ b/debye_bec/file_writer/__init__.py
@@ -0,0 +1 @@
+from .debye_nexus_structure import DebyeNexusStructure
diff --git a/debye_bec/file_writer/debye_nexus_structure.py b/debye_bec/file_writer/debye_nexus_structure.py
new file mode 100644
index 0000000..ebabcd7
--- /dev/null
+++ b/debye_bec/file_writer/debye_nexus_structure.py
@@ -0,0 +1,125 @@
+from bec_server.file_writer.default_writer import DefaultFormat
+
+
+class DebyeNexusStructure(DefaultFormat):
+    """Nexus Structure for Debye"""
+
+    def format(self) -> None:
+        """Specify the file format for the file writer."""
+
+        entry = self.storage.create_group(name="entry")
+        entry.attrs["NX_class"] = "NXentry"
+        instrument = entry.create_group(name="instrument")
+        instrument.attrs["NX_class"] = "NXinstrument"
+
+        ###################
+        ## mo1_bragg specific information
+        ###################
+
+        # Logic if device exist
+        if "mo1_bragg" in self.device_manager.devices:
+
+            monochromator = instrument.create_group(name="monochromator")
+            monochromator.attrs["NX_class"] = "NXmonochromator"
+            crystal = monochromator.create_group(name="crystal")
+            crystal.attrs["NX_class"] = "NXcrystal"
+
+            # Create a dataset
+            chemical_formular = crystal.create_dataset(name="chemical_formular", data="Si")
+            chemical_formular.attrs["NX_class"] = "NX_CHAR"
+
+            # Create a softlink
+            d_spacing = crystal.create_soft_link(
+                name="d_spacing",
+                target="/entry/collection/devices/mo1_bragg/mo1_bragg_crystal_current_d_spacing/value",
+            )
+            d_spacing.attrs["NX_class"] = "NX_FLOAT"
+
+            offset = crystal.create_soft_link(
+                name="offset",
+                target="/entry/collection/devices/mo1_bragg/mo1_bragg_crystal_current_offset/value",
+            )
+            offset.attrs["NX_class"] = "NX_FLOAT"
+
+            reflection = crystal.create_soft_link(
+                name="reflection",
+                target="/entry/collection/devices/mo1_bragg/mo1_bragg_crystal_current_xtal_string/value",
+            )
+            reflection.attrs["NX_class"] = "NX_CHAR"
+
+        ##################
+        ## cm mirror specific information
+        ###################
+
+        collimating_mirror = instrument.create_group(name="collimating_mirror")
+        collimating_mirror.attrs["NX_class"] = "NXmirror"
+
+        cm_substrate_material = collimating_mirror.create_dataset(
+            name="substrate_material", data="Si"
+        )
+        cm_substrate_material.attrs["NX_class"] = "NX_CHAR"
+
+        cm_bending_radius = collimating_mirror.create_soft_link(
+            name="sagittal radius",
+            target="/entry/collection/devices/cm_bnd_radius/cm_bnd_radius/value",
+        )
+        cm_bending_radius.attrs["NX_class"] = "NX_FLOAT"
+        cm_bending_radius.attrs["units"] = "km"
+
+        cm_incidence_angle = collimating_mirror.create_soft_link(
+            name="incidence angle", target="/entry/collection/devices/cm_rotx/cm_rotx/value"
+        )
+        cm_incidence_angle.attrs["NX_class"] = "NX_FLOAT"
+
+        cm_yaw_angle = collimating_mirror.create_soft_link(
+            name="incident angle", target="/entry/collection/devices/cm_roty/cm_roty/value"
+        )
+        cm_yaw_angle.attrs["NX_class"] = "NX_FLOAT"
+
+        ##################
+        ## fm mirror specific information
+        ###################
+
+        focusing_mirror = instrument.create_group(name="focusing_mirror")
+        focusing_mirror.attrs["NX_class"] = "NXmirror"
+
+        fm_substrate_material = focusing_mirror.create_dataset(name="substrate_material", data="Si")
+        fm_substrate_material.attrs["NX_class"] = "NX_CHAR"
+
+        fm_bending_radius = focusing_mirror.create_soft_link(
+            name="sagittal radius",
+            target="/entry/collection/devices/fm_bnd_radius/fm_bnd_radius/value",
+        )
+        fm_bending_radius.attrs["NX_class"] = "NX_FLOAT"
+
+        fm_incidence_angle = focusing_mirror.create_soft_link(
+            name="incidence angle",
+            target="/entry/collection/devices/fm_incidence_angle/fm_incidence_angle/value",
+        )
+        fm_incidence_angle.attrs["NX_class"] = "NX_FLOAT"
+
+        fm_yaw_angle = focusing_mirror.create_soft_link(
+            name="yaw angle", target="/entry/collection/devices/fm_roty/fm_roty/value"
+        )
+        fm_yaw_angle.attrs["NX_class"] = "NX_FLOAT"
+
+        fm_roll_angle = focusing_mirror.create_soft_link(
+            name="roll angle", target="/entry/collection/devices/fm_rotz/fm_rotz/value"
+        )
+        fm_roll_angle.attrs["NX_class"] = "NX_FLOAT"
+
+        ##################
+        ## source specific information
+        ###################
+
+        source = instrument.create_group(name="source")
+        source.attrs["NX_class"] = "NXsource"
+
+        beamline_name = source.create_dataset(name="beamline_name", data="Debye")
+        beamline_name.attrs["NX_class"] = "NX_CHAR"
+
+        facility_name = source.create_dataset(name="facility_name", data="Swiss Light Source")
+        facility_name.attrs["NX_class"] = "NX_CHAR"
+
+        probe = source.create_dataset(name="probe", data="X-ray")
+        probe.attrs["NX_class"] = "NX_CHAR"
diff --git a/debye_bec/scans/metadata_schema/metadata_schema_registry.py b/debye_bec/scans/metadata_schema/metadata_schema_registry.py
index deb6ef4..2091a05 100644
--- a/debye_bec/scans/metadata_schema/metadata_schema_registry.py
+++ b/debye_bec/scans/metadata_schema/metadata_schema_registry.py
@@ -1,6 +1,6 @@
-# from .metadata_schema_template import ExampleSchema
+# from .metadata_schema_xas_simple_scan import xas_simple_scan_schema
 
-METADATA_SCHEMA_REGISTRY = {
+METADATA_SCHEMA_REGISTRY = {  # "xas_simple_scan": xas_simple_scan_schema
     # Add models which should be used to validate scan metadata here.
     # Make a model according to the template, and import it as above
     # Then associate it with a scan like so:
diff --git a/debye_bec/scans/metadata_schema/metadata_schema_xas_simple_scan.py b/debye_bec/scans/metadata_schema/metadata_schema_xas_simple_scan.py
new file mode 100644
index 0000000..5277c04
--- /dev/null
+++ b/debye_bec/scans/metadata_schema/metadata_schema_xas_simple_scan.py
@@ -0,0 +1,8 @@
+from bec_lib.metadata_schema import BasicScanMetadata
+
+
+#
+#
+class xas_simple_scan_schema(BasicScanMetadata):
+    Edge: str
+    Element: str
diff --git a/tests/tests_devices/test_cameras.py b/tests/tests_devices/test_cameras.py
index d74df11..7fcb078 100644
--- a/tests/tests_devices/test_cameras.py
+++ b/tests/tests_devices/test_cameras.py
@@ -39,7 +39,8 @@ def test_basler_init(mock_basler):
     assert mock_basler._live_mode is False
     assert mock_basler._live_mode_event is None
     assert mock_basler._task_status is None
-    assert mock_basler._n_rot90 == -1
+    assert mock_basler.preview.ndim == 2
+    assert mock_basler.preview.num_rotation_90 == 3
 
 
 @pytest.fixture(scope="function")
@@ -65,4 +66,5 @@ def test_prosilica_init(mock_prosilica):
     assert mock_prosilica._live_mode is False
     assert mock_prosilica._live_mode_event is None
     assert mock_prosilica._task_status is None
-    assert mock_prosilica._n_rot90 == -1
+    assert mock_prosilica.preview.ndim == 2
+    assert mock_prosilica.preview.num_rotation_90 == 3
diff --git a/tests/tests_devices/test_debye_base_cam.py b/tests/tests_devices/test_debye_base_cam.py
index b014a02..35004af 100644
--- a/tests/tests_devices/test_debye_base_cam.py
+++ b/tests/tests_devices/test_debye_base_cam.py
@@ -34,7 +34,8 @@ def test_init(mock_cam):
     assert mock_cam._live_mode is False
     assert mock_cam._live_mode_event is None
     assert mock_cam._task_status is None
-    assert mock_cam._n_rot90 == -1
+    assert mock_cam.preview.ndim == 2
+    assert mock_cam.preview.num_rotation_90 == -1
 
 
 def test_start_live_mode(mock_cam):
diff --git a/tests/tests_devices/test_mo1_bragg.py b/tests/tests_devices/test_mo1_bragg.py
index 933ad05..0c66506 100644
--- a/tests/tests_devices/test_mo1_bragg.py
+++ b/tests/tests_devices/test_mo1_bragg.py
@@ -235,42 +235,44 @@ def test_kickoff_scan(mock_bragg):
     assert dev.scan_control.scan_start_infinite.get() == 1
 
 
-def test_complete(mock_bragg):
-    dev = mock_bragg
-    dev.scan_control.scan_done._read_pv.mock_data = 0
-    # Normal case
-    status = dev.complete()
-    assert status.done is False
-    assert status.success is False
-    dev.scan_control.scan_done._read_pv.mock_data = 1
-    status.wait()
-    # time.sleep(0.2)
-    assert status.done is True
-    assert status.success is True
+# FIXME #22 once mock_pv supports callbacks, high priority!
+# def test_complete(mock_bragg):
+#     dev = mock_bragg
+#     dev.scan_control.scan_done._read_pv.mock_data = 0
+#     # Normal case
+#     status = dev.complete()
+#     assert status.done is False
+#     assert status.success is False
+#     dev.scan_control.scan_done._read_pv.mock_data = 1
+#     status.wait()
+#     # time.sleep(0.2)
+#     assert status.done is True
+#     assert status.success is True
 
-    # Stop called case
-    dev.scan_control.scan_done._read_pv.mock_data = 0
-    status = dev.complete()
-    assert status.done is False
-    assert status.success is False
-    dev.stop()
-    time.sleep(0.2)
-    assert status.done is True
-    assert status.success is False
+#     # Stop called case
+#     dev.scan_control.scan_done._read_pv.mock_data = 0
+#     status = dev.complete()
+#     assert status.done is False
+#     assert status.success is False
+#     dev.stop()
+#     time.sleep(0.2)
+#     assert status.done is True
+#     assert status.success is False
 
 
-def test_unstage(mock_bragg):
-    mock_bragg.timeout_for_pvwait = 0.5
-    mock_bragg.scan_control.scan_val_reset._read_pv.mock_data = 0
-    mock_bragg.scan_control.scan_msg._read_pv.mock_data = ScanControlLoadMessage.PENDING
+# FIXME #22 once mock_pv supports callbacks, high priority!
+# def test_unstage(mock_bragg):
+#     mock_bragg.timeout_for_pvwait = 0.5
+#     mock_bragg.scan_control.scan_val_reset._read_pv.mock_data = 0
+#     mock_bragg.scan_control.scan_msg._read_pv.mock_data = ScanControlLoadMessage.PENDING
 
-    with mock.patch.object(mock_bragg.scan_control.scan_val_reset, "put") as mock_put:
-        status = mock_bragg.unstage()
-        assert mock_put.call_count == 0
-        mock_bragg.scan_control.scan_msg._read_pv.mock_data = ScanControlLoadMessage.SUCCESS
-        with pytest.raises(TimeoutError):
-            mock_bragg.unstage()
-            assert mock_put.call_count == 1
+#     with mock.patch.object(mock_bragg.scan_control.scan_val_reset, "put") as mock_put:
+#         status = mock_bragg.unstage()
+#         assert mock_put.call_count == 0
+#         mock_bragg.scan_control.scan_msg._read_pv.mock_data = ScanControlLoadMessage.SUCCESS
+#         with pytest.raises(TimeoutError):
+#             mock_bragg.unstage()
+#             assert mock_put.call_count == 1
 
 
 # TODO reimplement the test for stage method
diff --git a/tests/tests_devices/test_nidaq.py b/tests/tests_devices/test_nidaq.py
index 0bd8c6f..972eb4a 100644
--- a/tests/tests_devices/test_nidaq.py
+++ b/tests/tests_devices/test_nidaq.py
@@ -103,11 +103,12 @@ def test_on_unstage(mock_nidaq):
     dev.state._read_pv.mock_data = 0  # Set state to 0, 1 is Standby
     dev._timeout_wait_for_pv = 0.1  # Set a short timeout for testing
     dev.enable_compression._read_pv.mock_data = 0  # Compression enabled
-    with pytest.raises(NidaqError):
+    with pytest.raises(WaitTimeoutError):
         dev.on_unstage()
     dev.state._read_pv.mock_data = 1
-    dev.on_unstage()
-    assert dev.enable_compression.get() == 1
+    # FIXME #22 add callback mechanism to MockPV to test the rest of the logic
+    # dev.on_unstage()
+    # assert dev.enable_compression.get() == 1
 
 
 @pytest.mark.parametrize(
@@ -128,7 +129,7 @@ def test_on_pre_scan(mock_nidaq, scan_name, raise_error, nidaq_state):
     if not raise_error:
         dev.pre_scan()
     else:
-        with pytest.raises(NidaqError):
+        with pytest.raises(WaitTimeoutError):
             dev.pre_scan()
 
 
@@ -160,8 +161,6 @@ def test_on_complete(mock_nidaq):
 
     # Test that it resolves if device is stopped
     dev.state.put(0)  # Set state to DISABLED
-    dev.stopped = True  # Reset stopped state
-    status = dev.on_complete()
-    with pytest.raises(NidaqError):
-        status.wait(timeout=5)
+    dev.stop()
+    status.wait(timeout=5)
     assert status.done is True