I built Modeloop, a browser-based modeling tool for Control Systems

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Modeloop

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The Future of Systems Engineering

Models as Code.Confidence by Default.

Modeloop is the only visual environment that brings modern DevOps and built-in verification<br>to model-based design.

Try Modeloop Free →<br>No install. No credit card. Open in your browser and start designing.

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Mass<br>1.00kg

Damping<br>0.40N·s/m

Spring Stiffness<br>50N/m

simulation outputloading<br>m1.0 kgloading interactive model

10x Faster to Production<br>0 Binary Lock-in — models are plain JSON<br>2 Codegen Targets — Python & C from one model<br>2 Platforms - Available on Web and Desktop

What Modeloop Actually Does

One engineering loop from visual model to generated code.

Modeloop is not just a canvas and it is not just a simulator. It is a model-based<br>engineering workflow where diagrams become source code, tests, and reviewable artifacts.

01 Visual modeling Design the system Build block diagrams, containers, buses, calibration values, and StateCharts in one model. ↗ Real model A complete visual model preview<br>02 Generation Produce code Generate Python and MISRA-oriented C from the same model without locking tests to a diagram schema. ↗ PID code The same model as source typedef struct { float i; float prev; } PID; float pid_step(PID* s, float e, float dt) { s->i += e * dt; float d = (e - s->prev) / dt; s->prev = e; return Kp*e + Ki*s->i + Kd*d; }<br>03 Verification Run the workflow Trace requirements, run tests, review model diffs, and wire the result into CI/CD. ↗ Real testing A verification workflow preview<br>review<br>iterate<br>Generated deliverables<br>Code, tests, and traceability stay together.

build-log — -zsh<br>> modeloop build --all<br>[✓] Generated C code<br>[✓] Generated Python model<br>[✓] Verification tests passed<br>[✓] Pipeline configuration ready<br>~ $

Modeloop Workflow preview

01 The Convergence<br>MBSE Rigor<br>Source of truth, not documentation.

Model‑Based Systems Engineering has historically meant heavy<br>artifacts and static reviews. Modeloop reframes the model as a<br>live, executable contract: every block is bound to a<br>requirement, every connection is type‑checked, every change<br>re‑validates the system in seconds.

Agile Velocity<br>Continuous integration, not waterfall.

Embedded verification has always meant multi-month cycles.<br>Modeloop collapses them to seconds — generate the code, run the tests, on every commit and every branch, without leaving the editor.

↻ The synthesis<br>The two principles are usually treated as opposites.<br>Modeloop treats them as two halves of the same loop.

02 The Missing Piece

The V‑Model defines the shape of safety‑critical engineering.<br>Modeloop closes it.

Architecture FrameworkV-Model & The Modeloop Bridge<br>Phase ASpecification<br>Phase BVerification

Modeloop • The BridgeRequirementsStakeholder needsSubsystem DesignArchitecture & contractsFunctional SpecComponent logicThe ModelSingle source of truthUnit TestingAutomated verificationIntegration TestingCross-module validationSystem ValidationFinal verificationDesign<br>Generative Loop<br>Verified Asset

Specification descends the left arm. Verification ascends the<br>right. Historically, a chasm runs between them — engineers<br>manually translating models into code, then manually authoring<br>tests against the code they just wrote. The chasm is where bugs<br>are born. Modeloop replaces it with a generator: the model is the<br>design, and the model emits both the implementation and the test<br>harness that closes the V.

03 The Complexity Mandate

At nine figures of code,<br>every keystroke is a defect site.<br>Fig. 03 — Estimated lines of code, embedded systems Source: industry estimates &middot; visual log scale 1969 Apollo 11 Guidance Computer

145K

1997 F‑22 Raptor avionics

1.7M

2011 Boeing 787 Dreamliner

6.5M

2020 Premium passenger vehicle

100M

2025 Modern ADAS &middot; autonomous stack

500M+

105 106 107 108 109

Modern embedded software has crossed a threshold. Manual edits do<br>not scale linearly — they compound. A change in one file<br>silently breaks an integration contract three layers away. A unit<br>test passes while the integrated build regresses in ways no human<br>reviewer can catch in time. At 108 lines, the<br>probability of a defect‑free manual change approaches zero.

&rarr; The corollary<br>Generated code is no longer an optimization. It is a<br>precondition for shipping safe software at modern scale.<br>Modeloop is the generator — driven by a model that is itself<br>verified — closing the V end to end.

/ The platform One workflow, end to end

01 / Models<br>02 / State Machines<br>03 / Mathematical Verification<br>04 / Testing<br>05 / Simulation

pid_controller.mdl

supervisor.sfc<br>Idle entry/ count=0 during/ tick++ Active entry/ run() exit/ stop() Active --> [start] Idle (dashed) --> reset

formal-mapping<br>Formal Semantics User...

model modeloop code verification tests float

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