tobes-ui 0.1.0

Totally Bearable Spectrometer UI

tobes-ui: Totally Bearable Spectrometer UI

This is a UI for Torch Bearer Spectrometer (Y21B7W10034CCPD) that is available on Amazon and AliExpress (TB Store).

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

It also supports importing csv from Hopoocolor HPCS-320, HPCS-330 spectrometers.

Requirements

• Python 3.10
• pip install colour-science matplotlib pyserial

Usage

$ python3 main.py -h
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]
               [input_device]

TorchBearer spectrometer tool

positional arguments:
  input_device          Spectrometer device (dev:string); ; e.g. /dev/ttyUSB0, or
                        type:/dev/foo (registered types: 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
                        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
                        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
                        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 [DATA ...]
                        File(s) to load for viewing (disables data refresh); loaders: hpcs,
                        json
  -s HISTORY_SIZE, --history-size HISTORY_SIZE
                        Size of the measurement history (default: 50)
  -l LOG_LEVEL, --log-level LOG_LEVEL
                        Logging level to configure: {", ".join(e.name for e in LogLevel}
                        (default WARN)
  --log-file LOG_FILE   Logfile to write to (defaults to none (=console))
usage: main.py [-h] [-b] [-e EXPOSURE] [-q | -t GRAPH_TYPE] [-o | -n] [-f FILE_TEMPLATE]
               [-d [DATA ...]] [-s HISTORY_SIZE] [-l LOG_LEVEL] [--log-file LOG_FILE]
               [input_device]

My typical use is:

# To gather new data
python3 main.py /dev/ttyUSB0 -e auto -o

# To "replay" existing samples:
python3 main.py -d examples/*.json

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 second invocation shows you replay of examples (no spectrometer needed!):

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"
}

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

License

GPLv3

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