# AutomatedLiquidHandler Class

---

## Overview
The `AutomatedLiquidHandler` class simulates an automated liquid handling system commonly used in laboratories. It supports multiple channels for pipetting, tip management, and liquid handling operations such as aspiration and dispensing.

---

## Class Definition

```python
class AutomatedLiquidHandler:
    def __init__(self, num_channels=8, max_volume=1000):
        """
        Initialize the Automated Liquid Handler.
        :param num_channels: Number of pipette channels.
        :param max_volume: Maximum volume (in microliters) that each channel can handle.
        """
        ...
```

---

## Attributes

| Attribute | Type | Description |
|-----------|------|-------------|
| `num_channels` | `int` | Number of pipette channels. |
| `max_volume` | `int` | Maximum volume (in microliters) each channel can handle. |
| `current_volume` | `List[int]` | Current volume of liquid in each channel. |
| `position` | `Tuple[int, int]` | Current (x, y) position of the pipette. |
| `tips_attached` | `List[bool]` | Boolean list indicating if tips are attached to each channel. |

---

## Methods

### Initialization
- **`__init__(self, num_channels=8, max_volume=1000)`**
  Initializes a new `AutomatedLiquidHandler` instance with the specified number of channels and maximum volume per channel.

---

### Movement
- **`move_to(self, x: int, y: int)`**
  Moves the pipette to the specified (x, y) position.

  - **Parameters**:
    - `x`: X-coordinate.
    - `y`: Y-coordinate.

---

### Liquid Handling
- **`aspirate(self, volume: int, channel: int)`**
  Aspirates (draws in) a specified volume of liquid using the specified channel.

  - **Parameters**:
    - `volume`: Volume to aspirate (in microliters).
    - `channel`: Channel number to use (1-indexed).

  - **Raises**:
    - `ValueError`: If the channel number is invalid, the volume exceeds the maximum capacity, or no tip is attached.

- **`dispense(self, volume: int, channel: int)`**
  Dispenses a specified volume of liquid using the specified channel.

  - **Parameters**:
    - `volume`: Volume to dispense (in microliters).
    - `channel`: Channel number to use (1-indexed).

  - **Raises**:
    - `ValueError`: If the channel number is invalid, there is not enough liquid in the channel, or no tip is attached.

---

### Tip Management
- **`change_tip(self, channel: int)`**
  Changes the pipette tip for the specified channel.

  - **Parameters**:
    - `channel`: Channel number to change the tip (1-indexed).

  - **Raises**:
    - `ValueError`: If the channel number is invalid.

- **`wash_tip(self, channel: int)`**
  Washes the pipette tip for the specified channel, resetting the current volume to zero.

  - **Parameters**:
    - `channel`: Channel number to wash the tip (1-indexed).

  - **Raises**:
    - `ValueError`: If the channel number is invalid or no tip is attached.

---

### Status Retrieval
- **`get_status(self) -> Dict[str, Any]`**
  Retrieves the current status of the liquid handler.

  - **Returns**: A dictionary containing the position, current volumes, and tip attachment status.

- **`get_current_volume(self, channel: int) -> int`**
  Retrieves the current volume of liquid in the specified channel.

  - **Parameters**:
    - `channel`: Channel number to check (1-indexed).

  - **Returns**: Current volume in the specified channel (in microliters).

  - **Raises**:
    - `ValueError`: If the channel number is invalid.

---

## Example Usage

```python
# Initialize the Automated Liquid Handler
liquid_handler = AutomatedLiquidHandler(num_channels=8, max_volume=1000)

# Move to a specific position
liquid_handler.move_to(10, 20)

# Change tips for all channels
for channel in range(1, 9):
    liquid_handler.change_tip(channel)

# Aspirate liquid using channel 1
liquid_handler.aspirate(volume=500, channel=1)

# Dispense liquid using channel 1
liquid_handler.dispense(volume=250, channel=1)

# Wash the tip of channel 1
liquid_handler.wash_tip(channel=1)

# Get the status of the liquid handler
status = liquid_handler.get_status()
print("Current status:", status)

# Get the current volume in channel 1
current_volume = liquid_handler.get_current_volume(channel=1)
print(f"Current volume in channel 1: {current_volume} µL")
```

---

## Expected Output

```
Moved to position (10, 20)
Changed tip for channel 1
Changed tip for channel 2
...
Aspirated 500 uL using channel 1
Dispensed 250 uL using channel 1
Washed tip for channel 1
Current status: {'position': (10, 20), 'current_volume': [250, 0, 0, 0, 0, 0, 0, 0], 'tips_attached': [True, True, True, True, True, True, True, True]}
Current volume in channel 1: 250 µL
```

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## Dependencies
- **Python Standard Library**: No external dependencies are required.

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## Error Handling
- The class includes error handling for invalid channel numbers, volume limits, and missing tips.
- Methods raise `ValueError` with descriptive messages for invalid operations.

---

## Notes
- The `AutomatedLiquidHandler` class is designed to simulate the basic operations of an automated liquid handling system.
- The class supports multiple channels, allowing for parallel liquid handling operations.
- The `move_to` method simulates movement to a specific position, which can be used to align with wells or tubes in a lab setting.
