pyopticon.majumdar_lab_widgets.omega_usb_utc_widget module

class pyopticon.majumdar_lab_widgets.omega_usb_utc_widget.OmegaUSBUTCWidget(parent_dashboard, name, nickname, default_serial_port)

Bases: GenericWidget

Widget for an Omega USB-UTC thermocouple reader. A USB-UTC converts a single thermocouple (using the usual 2-prong thermocouple connection) into a USB signal. The Omega thermocouple reader desktop app can be used to set what type of thermocouple (K-type, etc.) is assumed.

Parameters:

  • parent_dashboard (pyopticon.dashboard.PyOpticonDashboard) – The dashboard object to which this device will be added

  • name (str) – The name that the widget will be labeled with, and under which its data will be logged, e.g. “Methane Mass Flow Controller”

  • nickname (str) – A shortened nickname that can be used to identify the widget in automation scripts, e.g. “CH4 MFC”

  • default_serial_port (str) – The name of the default selected serial port, e.g. ‘COM9’

on_failed_serial_open()

If serial opened unsuccessfully, set readouts to ‘No Reading’

on_update()

Update the device by polling the serial connection.

on_serial_query()

Send a query to the serial device asking for the temperature.

on_serial_read()

Parse the responses from the previous serial query and update the display. Return True if valid and and error string if not.

Returns:

True if the response was of the expected format, an error string otherwise.

Return type:

bool or str

on_serial_close()

When serial is closed, set all readouts to ‘None’.