pylabrobot.machines.backends.usb.USBBackend

class pylabrobot.machines.backends.usb.USBBackend(id_vendor: int, id_product: int, device_address: int | None = None, serial_number: str | None = None, packet_read_timeout: int = 3, read_timeout: int = 30, write_timeout: int = 30)

Bases: MachineBackend

An abstract class for liquid handler backends that talk over a USB cable. Provides read/write functionality, including timeout handling.

Methods

__init__(id_vendor, id_product[, ...])	Initialize a USBBackend.
deserialize(data)
get_available_devices()	Get a list of available devices that match the specified vendor and product IDs, and serial number and device_address if specified.
list_available_devices()	Utility to list all devices that match the specified vendor and product IDs, and serial number and address if specified.
read([timeout])	Read a response from the device.
serialize()	Serialize the backend to a dictionary.
setup()	Initialize the USB connection to the machine.
stop()	Close the USB connection to the machine.
write(data[, timeout])	Write data to the device.

Parameters:

• id_vendor (int)

• id_product (int)

• device_address (int | None)

• serial_number (str | None)

• packet_read_timeout (int)

• read_timeout (int)

• write_timeout (int)