14 files changed, 745 insertions, 0 deletions
diff --git a/daq_system/devices/__init__.py b/daq_system/devices/__init__.py
new file mode 100644
index 0000000..9c98181
--- /dev/null
+++ b/daq_system/devices/__init__.py
@@ -0,0 +1 @@
+# devices/__init__.py
diff --git a/daq_system/devices/__pycache__/__init__.cpython-312.pyc b/daq_system/devices/__pycache__/__init__.cpython-312.pyc
new file mode 100644
index 0000000..af251ba
--- /dev/null
+++ b/daq_system/devices/__pycache__/__init__.cpython-312.pyc
diff --git a/daq_system/devices/__pycache__/analog_input.cpython-312.pyc b/daq_system/devices/__pycache__/analog_input.cpython-312.pyc
new file mode 100644
index 0000000..efe5752
--- /dev/null
+++ b/daq_system/devices/__pycache__/analog_input.cpython-312.pyc
diff --git a/daq_system/devices/__pycache__/base_device.cpython-312.pyc b/daq_system/devices/__pycache__/base_device.cpython-312.pyc
new file mode 100644
index 0000000..4f08c29
--- /dev/null
+++ b/daq_system/devices/__pycache__/base_device.cpython-312.pyc
diff --git a/daq_system/devices/__pycache__/device_registry.cpython-312.pyc b/daq_system/devices/__pycache__/device_registry.cpython-312.pyc
new file mode 100644
index 0000000..8d5ca55
--- /dev/null
+++ b/daq_system/devices/__pycache__/device_registry.cpython-312.pyc
diff --git a/daq_system/devices/__pycache__/digital_io.cpython-312.pyc b/daq_system/devices/__pycache__/digital_io.cpython-312.pyc
new file mode 100644
index 0000000..9ca7bc7
--- /dev/null
+++ b/daq_system/devices/__pycache__/digital_io.cpython-312.pyc
diff --git a/daq_system/devices/__pycache__/serial_device.cpython-312.pyc b/daq_system/devices/__pycache__/serial_device.cpython-312.pyc
new file mode 100644
index 0000000..f4a2190
--- /dev/null
+++ b/daq_system/devices/__pycache__/serial_device.cpython-312.pyc
diff --git a/daq_system/devices/__pycache__/temperature.cpython-312.pyc b/daq_system/devices/__pycache__/temperature.cpython-312.pyc
new file mode 100644
index 0000000..ab2a2b9
--- /dev/null
+++ b/daq_system/devices/__pycache__/temperature.cpython-312.pyc
diff --git a/daq_system/devices/analog_input.py b/daq_system/devices/analog_input.py
new file mode 100644
index 0000000..8aaf9db
--- /dev/null
+++ b/daq_system/devices/analog_input.py
@@ -0,0 +1,184 @@
+"""
+devices/analog_input.py
+
+Analog Input device module — reads voltage/current channels.
+Includes a simulation mode (no hardware required) for development/demo.
+"""
+
+import math
+import random
+import time
+from typing import Any, Dict
+
+from PyQt6.QtWidgets import (
+    QWidget, QVBoxLayout, QHBoxLayout, QLabel, QComboBox,
+    QDoubleSpinBox, QGroupBox, QCheckBox, QSpinBox, QFormLayout
+)
+from PyQt6.QtCore import Qt
+
+from devices.base_device import BaseDevice, ChannelConfig, DeviceInfo, DeviceStatus
+
+
+CHANNEL_COLORS = ["#00d4ff", "#ff6b35", "#7fff6e", "#ffcc00", "#c77dff", "#ff4d6d", "#4cc9f0", "#f72585"]
+
+
+class AnalogInputDevice(BaseDevice):
+    """
+    Analog voltage/current input module.
+
+    Supports up to 16 channels. In simulation mode, generates
+    realistic waveforms (sine, ramp, noise) for each channel.
+    Real hardware: override read_channels() with your SDK calls.
+    """
+
+    DEVICE_TYPE = "analog_input"
+    ICON = "〜"
+
+    def __init__(self, device_id: str = "ai_0", num_channels: int = 4,
+                 simulate: bool = True, sample_rate_hz: float = 10.0):
+        channels = [
+            ChannelConfig(
+                channel_id=f"ch{i}",
+                name=f"AI {i}",
+                unit="V",
+                min_value=-10.0,
+                max_value=10.0,
+                alarm_low=-8.0,
+                alarm_high=8.0,
+                color=CHANNEL_COLORS[i % len(CHANNEL_COLORS)],
+            )
+            for i in range(num_channels)
+        ]
+        info = DeviceInfo(
+            device_id=device_id,
+            name="Analog Input",
+            device_type=self.DEVICE_TYPE,
+            description="Multi-channel analog voltage/current input",
+            manufacturer="Generic",
+            model="AI-16",
+            icon=self.ICON,
+            channels=channels,
+        )
+        super().__init__(info)
+        self.simulate = simulate
+        self.sample_rate_hz = sample_rate_hz
+        self._start_time = 0.0
+        # Sim parameters per channel
+        self._sim_params = [
+            {"freq": 0.5 + i * 0.3, "amp": 5.0, "offset": 0.0, "noise": 0.05, "mode": "sine"}
+            for i in range(num_channels)
+        ]
+
+    # ------------------------------------------------------------------ #
+    #  BaseDevice interface                                                #
+    # ------------------------------------------------------------------ #
+
+    def connect(self) -> bool:
+        if self.simulate:
+            self._start_time = time.time()
+            self.status = DeviceStatus.SIMULATED
+            return True
+        # TODO: Replace with real hardware SDK init
+        # e.g. import nidaqmx; self._task = nidaqmx.Task(); ...
+        self.status = DeviceStatus.ERROR
+        return False
+
+    def disconnect(self) -> None:
+        self.status = DeviceStatus.DISCONNECTED
+
+    def read_channels(self) -> Dict[str, float]:
+        if self.simulate:
+            return self._simulate_read()
+        # TODO: Replace with real hardware read
+        return {}
+
+    def write_channel(self, channel_id: str, value: Any) -> bool:
+        # Analog inputs don't support write — subclass for AO
+        return False
+
+    def get_config_widget(self) -> QWidget:
+        return AnalogInputConfigWidget(self)
+
+    # ------------------------------------------------------------------ #
+    #  Simulation                                                          #
+    # ------------------------------------------------------------------ #
+
+    def _simulate_read(self) -> Dict[str, float]:
+        t = time.time() - self._start_time
+        result = {}
+        for i, ch in enumerate(self.info.channels):
+            if not ch.enabled:
+                continue
+            p = self._sim_params[i]
+            if p["mode"] == "sine":
+                val = p["amp"] * math.sin(2 * math.pi * p["freq"] * t) + p["offset"]
+            elif p["mode"] == "ramp":
+                period = 1.0 / max(p["freq"], 0.01)
+                val = p["amp"] * ((t % period) / period) * 2 - p["amp"] + p["offset"]
+            elif p["mode"] == "square":
+                val = p["amp"] * math.copysign(1, math.sin(2 * math.pi * p["freq"] * t)) + p["offset"]
+            else:
+                val = p["offset"]
+            val += random.gauss(0, p["noise"] * p["amp"])
+            val = max(ch.min_value, min(ch.max_value, val))
+            result[ch.channel_id] = round(val, 4)
+        return result
+
+
+# ------------------------------------------------------------------ #
+#  Config Widget                                                       #
+# ------------------------------------------------------------------ #
+
+class AnalogInputConfigWidget(QWidget):
+    def __init__(self, device: AnalogInputDevice):
+        super().__init__()
+        self.device = device
+        self._build_ui()
+
+    def _build_ui(self):
+        layout = QVBoxLayout(self)
+        layout.setContentsMargins(0, 0, 0, 0)
+
+        # Global settings
+        global_group = QGroupBox("Device Settings")
+        form = QFormLayout(global_group)
+
+        self.sim_check = QCheckBox("Simulation Mode")
+        self.sim_check.setChecked(self.device.simulate)
+        form.addRow(self.sim_check)
+
+        self.rate_spin = QDoubleSpinBox()
+        self.rate_spin.setRange(0.1, 1000.0)
+        self.rate_spin.setValue(self.device.sample_rate_hz)
+        self.rate_spin.setSuffix(" Hz")
+        form.addRow("Sample Rate:", self.rate_spin)
+
+        layout.addWidget(global_group)
+
+        # Per-channel
+        ch_group = QGroupBox("Channel Configuration")
+        ch_layout = QVBoxLayout(ch_group)
+
+        for i, ch in enumerate(self.device.info.channels):
+            row = QHBoxLayout()
+            en = QCheckBox(ch.name)
+            en.setChecked(ch.enabled)
+            row.addWidget(en)
+
+            mode_cb = QComboBox()
+            mode_cb.addItems(["sine", "ramp", "square", "dc"])
+            mode_cb.setCurrentText(self.device._sim_params[i]["mode"])
+            row.addWidget(QLabel("Mode:"))
+            row.addWidget(mode_cb)
+
+            freq_sp = QDoubleSpinBox()
+            freq_sp.setRange(0.01, 100.0)
+            freq_sp.setValue(self.device._sim_params[i]["freq"])
+            freq_sp.setSuffix(" Hz")
+            row.addWidget(QLabel("Freq:"))
+            row.addWidget(freq_sp)
+
+            ch_layout.addLayout(row)
+
+        layout.addWidget(ch_group)
+        layout.addStretch()
diff --git a/daq_system/devices/base_device.py b/daq_system/devices/base_device.py
new file mode 100644
index 0000000..4898a7a
--- /dev/null
+++ b/daq_system/devices/base_device.py
@@ -0,0 +1,127 @@
+"""
+devices/base_device.py
+
+Abstract base class for all DAQ I/O modules.
+Every device plugin must subclass BaseDevice and implement the required methods.
+"""
+
+from abc import ABC, abstractmethod
+from dataclasses import dataclass, field
+from typing import Any, Dict, List, Optional
+from enum import Enum
+
+
+class DeviceStatus(Enum):
+    DISCONNECTED = "disconnected"
+    CONNECTING = "connecting"
+    CONNECTED = "connected"
+    ERROR = "error"
+    SIMULATED = "simulated"
+
+
+@dataclass
+class ChannelConfig:
+    """Configuration for a single I/O channel."""
+    channel_id: str
+    name: str
+    unit: str = ""
+    min_value: float = 0.0
+    max_value: float = 100.0
+    alarm_low: Optional[float] = None
+    alarm_high: Optional[float] = None
+    enabled: bool = True
+    color: str = "#00d4ff"  # For plotting
+    extra: Dict[str, Any] = field(default_factory=dict)
+
+
+@dataclass
+class DeviceInfo:
+    """Metadata describing a device module."""
+    device_id: str
+    name: str
+    device_type: str          # e.g. "analog_input", "digital_io", "serial", "temperature"
+    description: str = ""
+    manufacturer: str = ""
+    model: str = ""
+    version: str = "1.0.0"
+    icon: str = "⚙"           # Unicode icon for UI display
+    channels: List[ChannelConfig] = field(default_factory=list)
+
+
+class BaseDevice(ABC):
+    """
+    Abstract base class for all DAQ device plugins.
+
+    To create a new device module:
+      1. Subclass BaseDevice
+      2. Implement all @abstractmethod methods
+      3. Place the file in the devices/ directory
+      4. The DeviceRegistry will auto-discover it
+    """
+
+    def __init__(self, device_info: DeviceInfo):
+        self.info = device_info
+        self.status = DeviceStatus.DISCONNECTED
+        self._callbacks: List[callable] = []
+
+    # ------------------------------------------------------------------ #
+    #  Abstract interface — every device must implement these             #
+    # ------------------------------------------------------------------ #
+
+    @abstractmethod
+    def connect(self) -> bool:
+        """
+        Open connection to the physical device.
+        Returns True on success, False on failure.
+        Sets self.status appropriately.
+        """
+
+    @abstractmethod
+    def disconnect(self) -> None:
+        """Close the connection and release resources."""
+
+    @abstractmethod
+    def read_channels(self) -> Dict[str, float]:
+        """
+        Read current values from all enabled channels.
+        Returns dict mapping channel_id -> float value.
+        Called repeatedly by the acquisition loop.
+        """
+
+    @abstractmethod
+    def write_channel(self, channel_id: str, value: Any) -> bool:
+        """
+        Write a value to an output channel (if supported).
+        Returns True on success.
+        """
+
+    @abstractmethod
+    def get_config_widget(self):
+        """
+        Return a QWidget with device-specific configuration controls.
+        This widget is embedded in the Device Config panel.
+        """
+
+    # ------------------------------------------------------------------ #
+    #  Shared helpers                                                      #
+    # ------------------------------------------------------------------ #
+
+    def add_data_callback(self, callback: callable) -> None:
+        """Register a callback: callback(device_id, channel_id, value, timestamp)"""
+        self._callbacks.append(callback)
+
+    def _emit(self, channel_id: str, value: float, timestamp: float) -> None:
+        for cb in self._callbacks:
+            try:
+                cb(self.info.device_id, channel_id, value, timestamp)
+            except Exception:
+                pass
+
+    def get_channel(self, channel_id: str) -> Optional[ChannelConfig]:
+        for ch in self.info.channels:
+            if ch.channel_id == channel_id:
+                return ch
+        return None
+
+    def __repr__(self):
+        return f"<{self.__class__.__name__} id={self.info.device_id} status={self.status.value}>"
diff --git a/daq_system/devices/device_registry.py b/daq_system/devices/device_registry.py
new file mode 100644
index 0000000..e407bc3
--- /dev/null
+++ b/daq_system/devices/device_registry.py
@@ -0,0 +1,87 @@
+"""
+devices/device_registry.py
+
+Discovers, instantiates, and manages all device modules.
+Add new devices by dropping a .py file into the devices/ directory.
+"""
+
+import importlib
+import inspect
+import pkgutil
+from pathlib import Path
+from typing import Dict, List, Optional, Type
+
+from devices.base_device import BaseDevice, DeviceInfo
+
+
+class DeviceRegistry:
+    """Central registry for all DAQ device modules."""
+
+    def __init__(self):
+        self._device_classes: Dict[str, Type[BaseDevice]] = {}
+        self._instances: Dict[str, BaseDevice] = {}
+        self._auto_discover()
+
+    # ------------------------------------------------------------------ #
+    #  Discovery                                                           #
+    # ------------------------------------------------------------------ #
+
+    def _auto_discover(self):
+        """Scan the devices/ package for BaseDevice subclasses."""
+        devices_path = Path(__file__).parent
+        package = "devices"
+
+        for _, module_name, _ in pkgutil.iter_modules([str(devices_path)]):
+            if module_name.startswith("_") or module_name in ("base_device", "device_registry"):
+                continue
+            try:
+                module = importlib.import_module(f"{package}.{module_name}")
+                for name, obj in inspect.getmembers(module, inspect.isclass):
+                    if issubclass(obj, BaseDevice) and obj is not BaseDevice:
+                        self._device_classes[name] = obj
+            except Exception as e:
+                print(f"[DeviceRegistry] Failed to load {module_name}: {e}")
+
+    def register_class(self, cls: Type[BaseDevice]) -> None:
+        """Manually register a device class (for testing / runtime plugins)."""
+        self._device_classes[cls.__name__] = cls
+
+    # ------------------------------------------------------------------ #
+    #  Instance management                                                 #
+    # ------------------------------------------------------------------ #
+
+    def create_device(self, class_name: str, device_id: str, **kwargs) -> Optional[BaseDevice]:
+        """Instantiate a device by class name with a unique device_id."""
+        cls = self._device_classes.get(class_name)
+        if cls is None:
+            raise ValueError(f"Unknown device class: {class_name}")
+        instance = cls(device_id=device_id, **kwargs)
+        self._instances[device_id] = instance
+        return instance
+
+    def add_instance(self, device: BaseDevice) -> None:
+        """Register a pre-built device instance."""
+        self._instances[device.info.device_id] = device
+
+    def remove_instance(self, device_id: str) -> None:
+        dev = self._instances.pop(device_id, None)
+        if dev:
+            try:
+                dev.disconnect()
+            except Exception:
+                pass
+
+    def get_instance(self, device_id: str) -> Optional[BaseDevice]:
+        return self._instances.get(device_id)
+
+    def all_instances(self) -> List[BaseDevice]:
+        return list(self._instances.values())
+
+    def available_classes(self) -> List[str]:
+        return list(self._device_classes.keys())
+
+    def get_class(self, class_name: str) -> Optional[Type[BaseDevice]]:
+        return self._device_classes.get(class_name)
+
+    def __len__(self):
+        return len(self._instances)
diff --git a/daq_system/devices/digital_io.py b/daq_system/devices/digital_io.py
new file mode 100644
index 0000000..b78b5cf
--- /dev/null
+++ b/daq_system/devices/digital_io.py
@@ -0,0 +1,95 @@
+"""
+devices/digital_io.py
+
+Digital I/O device module — reads and writes binary channels.
+"""
+
+import random
+import time
+from typing import Any, Dict
+
+from PyQt6.QtWidgets import QWidget, QVBoxLayout, QHBoxLayout, QCheckBox, QGroupBox, QPushButton, QLabel
+from devices.base_device import BaseDevice, ChannelConfig, DeviceInfo, DeviceStatus
+
+
+class DigitalIODevice(BaseDevice):
+    DEVICE_TYPE = "digital_io"
+    ICON = "⬛"
+
+    def __init__(self, device_id: str = "dio_0", num_inputs: int = 8,
+                 num_outputs: int = 8, simulate: bool = True):
+        channels = []
+        for i in range(num_inputs):
+            channels.append(ChannelConfig(
+                channel_id=f"di{i}", name=f"DI {i}", unit="",
+                min_value=0.0, max_value=1.0,
+                color="#00d4ff" if i % 2 == 0 else "#4cc9f0"
+            ))
+        for i in range(num_outputs):
+            channels.append(ChannelConfig(
+                channel_id=f"do{i}", name=f"DO {i}", unit="",
+                min_value=0.0, max_value=1.0,
+                color="#ff6b35" if i % 2 == 0 else "#ffcc00"
+            ))
+        info = DeviceInfo(
+            device_id=device_id, name="Digital I/O",
+            device_type=self.DEVICE_TYPE,
+            description="Digital input/output module",
+            icon=self.ICON, channels=channels
+        )
+        super().__init__(info)
+        self.simulate = simulate
+        self._output_state: Dict[str, int] = {f"do{i}": 0 for i in range(num_outputs)}
+        self._toggle_counters = [0] * num_inputs
+
+    def connect(self) -> bool:
+        self.status = DeviceStatus.SIMULATED if self.simulate else DeviceStatus.ERROR
+        return self.simulate
+
+    def disconnect(self) -> None:
+        self.status = DeviceStatus.DISCONNECTED
+
+    def read_channels(self) -> Dict[str, float]:
+        result = {}
+        # Simulate toggling inputs randomly
+        for i, ch in enumerate(self.info.channels):
+            if ch.channel_id.startswith("di"):
+                self._toggle_counters[i] += 1
+                if self._toggle_counters[i] > random.randint(5, 30):
+                    self._toggle_counters[i] = 0
+                    result[ch.channel_id] = float(random.randint(0, 1))
+                else:
+                    result[ch.channel_id] = result.get(ch.channel_id, 0.0)
+            elif ch.channel_id.startswith("do"):
+                result[ch.channel_id] = float(self._output_state.get(ch.channel_id, 0))
+        return result
+
+    def write_channel(self, channel_id: str, value: Any) -> bool:
+        if channel_id in self._output_state:
+            self._output_state[channel_id] = int(bool(value))
+            return True
+        return False
+
+    def get_config_widget(self) -> QWidget:
+        w = QWidget()
+        layout = QVBoxLayout(w)
+        grp = QGroupBox("Output Controls")
+        grp_layout = QVBoxLayout(grp)
+        for k in self._output_state:
+            row = QHBoxLayout()
+            lbl = QLabel(k.upper())
+            btn = QPushButton("OFF")
+            btn.setCheckable(True)
+            btn.setChecked(bool(self._output_state[k]))
+            btn.setText("ON" if self._output_state[k] else "OFF")
+            channel_id = k
+            def on_toggle(checked, cid=channel_id, b=btn):
+                self.write_channel(cid, checked)
+                b.setText("ON" if checked else "OFF")
+            btn.toggled.connect(on_toggle)
+            row.addWidget(lbl)
+            row.addWidget(btn)
+            grp_layout.addLayout(row)
+        layout.addWidget(grp)
+        layout.addStretch()
+        return w
diff --git a/daq_system/devices/serial_device.py b/daq_system/devices/serial_device.py
new file mode 100644
index 0000000..842a401
--- /dev/null
+++ b/daq_system/devices/serial_device.py
@@ -0,0 +1,136 @@
+"""
+devices/serial_device.py
+
+Serial / UART device module — reads data from a serial port.
+Parses CSV-format lines: "ch0,ch1,ch2,...\\n"
+"""
+
+import random
+import time
+from typing import Any, Dict
+
+from PyQt6.QtWidgets import (
+    QWidget, QVBoxLayout, QFormLayout, QGroupBox,
+    QComboBox, QSpinBox, QLineEdit, QPushButton, QLabel
+)
+from devices.base_device import BaseDevice, ChannelConfig, DeviceInfo, DeviceStatus
+
+SER_COLORS = ["#7fff6e", "#4cc9f0", "#f72585", "#00d4ff"]
+
+
+class SerialDevice(BaseDevice):
+    DEVICE_TYPE = "serial"
+    ICON = "⇌"
+
+    def __init__(self, device_id: str = "ser_0", port: str = "COM3",
+                 baud_rate: int = 115200, num_channels: int = 4,
+                 simulate: bool = True):
+        channels = [
+            ChannelConfig(
+                channel_id=f"s{i}", name=f"Serial {i}",
+                unit="", min_value=0.0, max_value=1023.0,
+                color=SER_COLORS[i % len(SER_COLORS)]
+            )
+            for i in range(num_channels)
+        ]
+        info = DeviceInfo(
+            device_id=device_id, name="Serial / UART",
+            device_type=self.DEVICE_TYPE,
+            description=f"Serial port {port} @ {baud_rate} baud",
+            icon=self.ICON, channels=channels
+        )
+        super().__init__(info)
+        self.port = port
+        self.baud_rate = baud_rate
+        self.simulate = simulate
+        self._serial = None  # Replace with serial.Serial() for real hardware
+        self._t0 = 0.0
+
+    def connect(self) -> bool:
+        if self.simulate:
+            self._t0 = time.time()
+            self.status = DeviceStatus.SIMULATED
+            return True
+        try:
+            import serial
+            self._serial = serial.Serial(self.port, self.baud_rate, timeout=0.1)
+            self.status = DeviceStatus.CONNECTED
+            return True
+        except Exception as e:
+            print(f"[SerialDevice] Connect failed: {e}")
+            self.status = DeviceStatus.ERROR
+            return False
+
+    def disconnect(self) -> None:
+        if self._serial:
+            try:
+                self._serial.close()
+            except Exception:
+                pass
+        self.status = DeviceStatus.DISCONNECTED
+
+    def read_channels(self) -> Dict[str, float]:
+        if self.simulate:
+            return self._simulate_read()
+        if not self._serial or not self._serial.is_open:
+            return {}
+        try:
+            line = self._serial.readline().decode("utf-8").strip()
+            if not line:
+                return {}
+            parts = line.split(",")
+            return {
+                ch.channel_id: float(parts[i])
+                for i, ch in enumerate(self.info.channels)
+                if i < len(parts)
+            }
+        except Exception:
+            return {}
+
+    def _simulate_read(self) -> Dict[str, float]:
+        t = time.time() - self._t0
+        import math
+        return {
+            ch.channel_id: round(512 + 400 * math.sin(2 * 3.14159 * (0.2 + i * 0.15) * t)
+                                 + random.gauss(0, 5), 1)
+            for i, ch in enumerate(self.info.channels)
+        }
+
+    def write_channel(self, channel_id: str, value: Any) -> bool:
+        if self._serial and self._serial.is_open:
+            try:
+                cmd = f"{channel_id}:{value}\n"
+                self._serial.write(cmd.encode())
+                return True
+            except Exception:
+                return False
+        return False
+
+    def get_config_widget(self) -> QWidget:
+        w = QWidget()
+        layout = QVBoxLayout(w)
+        grp = QGroupBox("Serial Port Settings")
+        form = QFormLayout(grp)
+
+        self._port_edit = QLineEdit(self.port)
+        form.addRow("Port:", self._port_edit)
+
+        self._baud_cb = QComboBox()
+        self._baud_cb.addItems(["9600", "19200", "38400", "57600", "115200", "230400", "460800"])
+        self._baud_cb.setCurrentText(str(self.baud_rate))
+        form.addRow("Baud Rate:", self._baud_cb)
+
+        parity_cb = QComboBox()
+        parity_cb.addItems(["None", "Even", "Odd"])
+        form.addRow("Parity:", parity_cb)
+
+        bits_cb = QComboBox()
+        bits_cb.addItems(["8", "7"])
+        form.addRow("Data Bits:", bits_cb)
+
+        apply_btn = QPushButton("Apply & Reconnect")
+        form.addRow(apply_btn)
+
+        layout.addWidget(grp)
+        layout.addStretch()
+        return w
diff --git a/daq_system/devices/temperature.py b/daq_system/devices/temperature.py
new file mode 100644
index 0000000..5427cf6
--- /dev/null
+++ b/daq_system/devices/temperature.py
@@ -0,0 +1,115 @@
+"""
+devices/temperature.py
+
+Temperature sensor module — thermocouple / RTD / thermistor inputs.
+"""
+
+import math
+import random
+import time
+from typing import Any, Dict
+
+from PyQt6.QtWidgets import (
+    QWidget, QVBoxLayout, QFormLayout, QGroupBox,
+    QComboBox, QDoubleSpinBox, QLabel, QCheckBox
+)
+from devices.base_device import BaseDevice, ChannelConfig, DeviceInfo, DeviceStatus
+
+TEMP_COLORS = ["#ff6b35", "#ffcc00", "#c77dff", "#ff4d6d"]
+
+
+class TemperatureDevice(BaseDevice):
+    DEVICE_TYPE = "temperature"
+    ICON = "🌡"
+
+    def __init__(self, device_id: str = "temp_0", num_channels: int = 4,
+                 simulate: bool = True, sensor_type: str = "thermocouple"):
+        channels = [
+            ChannelConfig(
+                channel_id=f"tc{i}", name=f"TC {i}",
+                unit="°C", min_value=-200.0, max_value=1200.0,
+                alarm_low=0.0, alarm_high=100.0,
+                color=TEMP_COLORS[i % len(TEMP_COLORS)]
+            )
+            for i in range(num_channels)
+        ]
+        info = DeviceInfo(
+            device_id=device_id, name="Temperature",
+            device_type=self.DEVICE_TYPE,
+            description=f"{sensor_type.title()} temperature input",
+            icon=self.ICON, channels=channels
+        )
+        super().__init__(info)
+        self.simulate = simulate
+        self.sensor_type = sensor_type
+        self._start = time.time()
+        # Simulate slow thermal drift
+        self._targets = [20.0 + i * 5 for i in range(num_channels)]
+        self._currents = [20.0 + i * 5 for i in range(num_channels)]
+
+    def connect(self) -> bool:
+        self._start = time.time()
+        self.status = DeviceStatus.SIMULATED if self.simulate else DeviceStatus.ERROR
+        return self.simulate
+
+    def disconnect(self) -> None:
+        self.status = DeviceStatus.DISCONNECTED
+
+    def read_channels(self) -> Dict[str, float]:
+        result = {}
+        for i, ch in enumerate(self.info.channels):
+            if not ch.enabled:
+                continue
+            # Slow drift toward target with noise
+            diff = self._targets[i] - self._currents[i]
+            self._currents[i] += diff * 0.05 + random.gauss(0, 0.02)
+            # Occasionally shift target
+            if random.random() < 0.01:
+                self._targets[i] += random.gauss(0, 2.0)
+                self._targets[i] = max(10.0, min(200.0, self._targets[i]))
+            result[ch.channel_id] = round(self._currents[i], 2)
+        return result
+
+    def write_channel(self, channel_id: str, value: Any) -> bool:
+        return False  # Read-only
+
+    def get_config_widget(self) -> QWidget:
+        w = QWidget()
+        layout = QVBoxLayout(w)
+        grp = QGroupBox("Sensor Configuration")
+        form = QFormLayout(grp)
+
+        sensor_cb = QComboBox()
+        sensor_cb.addItems(["thermocouple", "rtd", "thermistor", "ic_sensor"])
+        sensor_cb.setCurrentText(self.sensor_type)
+        form.addRow("Sensor Type:", sensor_cb)
+
+        tc_type = QComboBox()
+        tc_type.addItems(["K", "J", "T", "E", "N", "R", "S", "B"])
+        form.addRow("TC Type:", tc_type)
+
+        unit_cb = QComboBox()
+        unit_cb.addItems(["°C", "°F", "K"])
+        form.addRow("Units:", unit_cb)
+
+        layout.addWidget(grp)
+
+        # Alarm config per channel
+        alarm_grp = QGroupBox("Alarm Setpoints")
+        alarm_layout = QVBoxLayout(alarm_grp)
+        for ch in self.info.channels:
+            row_layout = QFormLayout()
+            lo = QDoubleSpinBox()
+            lo.setRange(-200, 1200)
+            lo.setValue(ch.alarm_low or 0.0)
+            lo.setSuffix(" °C")
+            hi = QDoubleSpinBox()
+            hi.setRange(-200, 1200)
+            hi.setValue(ch.alarm_high or 100.0)
+            hi.setSuffix(" °C")
+            row_layout.addRow(f"{ch.name} Low:", lo)
+            row_layout.addRow(f"{ch.name} High:", hi)
+            alarm_layout.addLayout(row_layout)
+        layout.addWidget(alarm_grp)
+        layout.addStretch()
+        return w