tobes-ui 0.3.3

Totally Bearable Spectrometer UI

tobes-ui: Totally Bearable Spectrometer UI

This is a UI for several spectrometers:

• Torch Bearer Spectrometer (Y21B7W10034CCPD) that is available on Amazon and AliExpress (TB Store)
• Ocean Optics Flame-S, USB4000 (and maybe others)

Originally forked from ZoidTechnology/Torch-Bearer-Tools[^1] and improved (beyond recognition).

It also supports displaying its own json saves and importing csv data from yet another Chinese range of spectrometers (Hopoocolor HPCS-320, HPCS-330).

Install

• pipx install tobes-ui

or:

• pip install tobes-ui

If you want support for Ocean Optics, you also need to install tobes-ui[ocean], and also (for Linux and Windows) follow the OS support instructions on python-seabreeze.

Usage

usage: main.py [-h] [-b] [-L] [-e EXPOSURE] [-q | -t GRAPH_TYPE] [-o | -n]
               [-f FILE_TEMPLATE] [-d [DATA ...]] [-s HISTORY_SIZE] [-l LOG_LEVEL]
               [--log-file LOG_FILE] [-m MODE]
               [input_device]

Totally Bearable Spectrometer UI

positional arguments:
  input_device          Spectrometer device (dev:string); ; e.g. /dev/ttyUSB0, or
                        type:/dev/foo (registered types: fake, fake-spectrometer, oo, ocean,
                        oceanoptics, tb, torchbearer)

options:
  -h, --help            show this help message and exit
  -b, --backends        List all spectrometer backends
  -L, --loaders         List all file loaders
  -e, --exposure EXPOSURE
                        Exposure time in milliseconds (0.1-5000) or 'auto' (default: auto)
  -q, --quick-graph     Enable quick (LINE) graph mode
  -t, --graph_type GRAPH_TYPE
                        Graph type (LINE, SPECTRUM, CIE1931, CIE1960UCS, CIE1976UCS, TM30,
                        OVERLAY) (default SPECTRUM)
  -o, --oneshot         One shot mode (single good capture)
  -n, --no-refresh      Start without refresh
  -f, --file_template FILE_TEMPLATE
                        File template (without .ext) for data export (default:
                        'spectrum-{timestamp_full}{graph_type}'),
                        '{name}-{timestamp_full}{graph_type}' might be also useful
  -d, --data [DATA ...]
                        File(s) to load for viewing (disables data refresh); (loaders: hpcs,
                        json)
  -s, --history-size HISTORY_SIZE
                        Size of the measurement history (default: 50)
  -l, --log-level LOG_LEVEL
                        Logging level to configure: DEBUG, INFO, WARN, ERROR, FATAL (default
                        WARN)
  --log-file LOG_FILE   Logfile to write to (defaults to none (=console))
  -m, --mode MODE       Mode to run in: PLOT, WLC (default PLOT)
usage: main.py [-h] [-b] [-L] [-e EXPOSURE] [-q | -t GRAPH_TYPE] [-o | -n]
               [-f FILE_TEMPLATE] [-d [DATA ...]] [-s HISTORY_SIZE] [-l LOG_LEVEL]
               [--log-file LOG_FILE] [-m MODE]
               [input_device]

My typical use is:

# To gather new data from Torch Bearer:
python3 -m tobes_ui.main /dev/ttyUSB0 -e auto -o
# or (if you use pipx): tobes-ui /dev/...

# To gather new data from Ocean Optics:
python3 -m tobes_ui.main oo: -e auto -o

# To "replay" existing samples:
python3 -m tobes_ui.main -d examples/*.json
# or (if you use pipx): tobes-ui -d ...

# To wavelength calibrate (OO only):
python3 -m tobes_ui.main oo: -m wlc

# To wavelength calibrate using fake (replay) spectrometer
python3 -m tobes_ui.main fake:examples/cali-sample.json -m wlc

The first invocation gives one-shot spectrum on auto exposure (from /dev/ttyUSB0):

Or, if you prefer, screenshot of the CIE1976UCS locus or screenshot of the TM30 graph.

The "replay" invocation shows you saved data from examples (no spectrometer needed!):

The "wavelength calibration" allows you to calibrate wavelength of supported spectrometers (currently only Ocean Optics or fake (replay) spectrometer):

Plot tools

There are several icons on the toolbar:

Icon	Key	Explanation
	Enter, A	Name the current spectrum data
	S	Saves rendered graph as png
	D	Save raw data as json
	R	Keep refreshing data
	1, O	One good acquisition
	Delete, X	Remove the current spectrum data (from UI)
	-	Remove all the spectrum data (from UI)
	Home, H	Go to start of history
	←, P	Go to previous sample
	→, N	Go to next sample
	End, E	Go to end of history
	Q, L	Line graph
	C	Spectrum graph (slow to draw)
	3	CIE1931 locus graph
	6	CIE1960UCS locus graph
	7	CIE1976UCS locus graph
	T	TM30 graph
	V	Overlay graph -- all spectra at once
	Y	Only line+spectrum: Fix Y-axis range based on current graph
	G	Only line+spectrum: Fix Y-axis range based on all graphs
	K	Only line+overlay: Use logarithmic Y-axis
	Z	Only line, spectrum, overlay: Limit X axis to visible spectrum (380..750 nm)
	|	Only line, overlay: Show spectrum + photosensitivities overlay
	Esc, Ctrl+Q	Quit the app

Exported data

Sample exported data:

{
    "status": "normal",
    "exposure": "automatic",
    "time": 329.1,
    "spd": {
        "340": 0.0,
        "341": 0.0,
        "...": "......",
        "595": 0.013011,
        "596": 0.013095,
        "597": 0.013176,
        "598": 0.013251,
        "599": 0.013318,
        "600": 0.013385,
        "601": 0.01345,
        "602": 0.013515,
        "603": 0.013575,
        "604": 0.013621,
        "605": 0.013648,
        "...": "......",
        "995": 0.005143,
        "996": 0.005075,
        "997": 0.005119,
        "998": 0.004982,
        "999": 0.004944,
        "1000": 0.004859
    },
    "wavelength_range": [
        340,
        1000
    ],
    "wavelengths_raw": [
        340,
        341,
        "...",
        999,
        1000
    ],
    "spd_raw": [
        0.0,
        0.0,
        "......",
        0.013011,
        0.013095,
        0.013176,
        0.013251,
        0.013318,
        0.013385,
        0.01345,
        0.013515,
        0.013575,
        0.013621,
        0.013648,
        "......",
        0.005143,
        0.005075,
        0.005119,
        0.004982,
        0.004944,
        0.004859
    ],
    "ts": 1751704901.025932,
    "name": "my fancy spectrum",
    "y_axis": "$W\\cdot{}m^{-2}\\cdot{}nm^{-1}$",
    "device": "Y21B7W10034CCPD",
    "meta": {
        "key": "value"
    }
}

Meaning of the keys:

Key	Type	Default	Meaning
status	enum	required	Status of the exposure (normal, over, under)
exposure	enum	required	Type of the exposure (manual, automatic)
time	float	required	Time (ms) of the exposure
spd	dict[int, float]	required	Dictionary of wavelength: intensity
wavelength_range	range	from spd	Range of spd
wavelengths_raw	list[float]	None	Raw wavelengths (device-specific)
spd_raw	list[float]	None	Raw intensities (device-specific)
ts	unix ts	required	Time when the measurement took place
name	str	None	Human name for the measurement
y_axis	str	"counts"	Unit for the Y axis
device	str	None	Identifier of the device that took the measurement
meta	dict[str, any]	{}	Spectrometer-specific metadata

License

GPLv3

[^1]: Discussed in the Software Hacks Unlock Cheap Spectrometer article.