Designing serial tools for hostile benches
Isolation, fault models, and the unglamorous details that make an instrument interface trustworthy.
Software / Tools · PRJ-2417
Custom Serial Communicator
A lab instrument interface becomes much more valuable when transport, protocol knowledge, simulation, and operator context live in the same system.
SYSTEM PLATE / PRJ-2417STATUS / Active
04protocol families
01shared operator flow
∞simulated fault paths
Problem
Problem and constraints
Labs often accumulate model-specific scripts, undocumented command tables, and brittle serial workflows. The real problem was not opening a COM port; it was making mixed instruments predictable for daily operators and developers.
Engineering approachArchitecture and implementation
A registry-driven driver layer keeps model behavior in YAML specifications and protocol codecs. Acquisition workers isolate transport timing from the UI, while simulated gauges exercise the same operator paths without connected equipment.
Registry
Model defaults, commands, transport constraints, and support status resolve from explicit device specifications.
Runtime
Polling workers emit structured readings and errors without allowing serial faults to freeze the interface.
Evidence
Session persistence, traffic inspection, multi-gauge plots, and exports make every run reviewable.
Supporting notes
Technical decisions in more detail.
Related writeups document implementation patterns, tradeoffs, and recovery considerations from this work.
Repository
Code and implementation record.
Public repository metadata and source are included where the project is available for review.
Related work
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