Case study

hpcs330: reconstructing the Hopoo spectrometer serial protocol

hpcs330 implements a Python reader for the Hopoo HPCS-330 spectrometer using a USB serial protocol recovered from the vendor's Windows application. The protocol notes describe framing and measurement commands; the client retrieves spectral samples and the meter's computed light measurements.

Targets: Protocol
Category: Independent reconstruction cases
Relationship: Independent reconstruction project
Sources reviewed: 2026-11-06
Evidence class: C2 code & docs, no demo or download

Stars: 0
Last commit: 2026-10-29
Language: Python
License (GitHub): MIT

GitHub data as of 2026-11-10

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Evidence

Observed: Code, documentation and a download method observed; no demo found.
Checked: 2026-11-08

How evidence classes are assigned

Requirements & limits

Prerequisites: Python 3.10 or later and pyserial 3.4 or later.
Prerequisites: A Hopoo HPCS-330P in USB COM mode; this is the model the author reports testing.
Limits: Other HPCS-330 variants and HPCS-310/320 models are unconfirmed; some computed values have not been checked against the screen.
License: MIT License.

Cite

BibTeX

@misc{hpcs330-case,
  title = {{hpcs330: reconstructing the Hopoo spectrometer serial protocol}},
  howpublished = {\url{https://github.com/markchadwick/hpcs330}},
  url = {https://github.com/markchadwick/hpcs330},
  urldate = {2026-11-06},
  note = {Awesome REA entry: \url{https://awesomerea.org/resources/hpcs330-case/}}
}

Plain text

hpcs330: reconstructing the Hopoo spectrometer serial protocol. https://github.com/markchadwick/hpcs330 (accessed 2026-11-06). Awesome REA entry: https://awesomerea.org/resources/hpcs330-case/

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About this entry

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Primary sources

docs/protocol.md GitHub · markchadwick/hpcs330 · Revision 8e56990
README.md GitHub · markchadwick/hpcs330 · Revision 8e56990