Your engineering project, from rough idea to demo day.

Describe what you want to build. Plinth generates the parts list, wiring, schedule, firmware, and CAD, with an AI engineer beside you the whole way.

Watch it build ↓

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The gap

Every great build dies the same death: three weeks lost figuring out what to buy, how to wire it, and where to start.

Plinth closes that gap in one sitting.

How it works

Watch a sentence become a build

01 · Describe

Start with a sentence.

Tell Plinth what you want to build and your constraints: budget, timeline, experience.

new project

What do you want to build?

A line-following robot for my mechatronics class, under $80

Budget $8012 weeksFirst PCB

Generate project

02 · Generate

Get the whole plan, sourced and scheduled.

The agent pipeline drafts the full project: subsystems, parts with live supplier pricing, schedule, wiring, firmware, CAD, PCB.

overview · line-following robot

$73.80

budget

12 wk

schedule

subsystems

Sensing

Drive

Control

Integrate

03 · Refine

Change anything. Everything updates.

Swap parts, redraw wiring, run rule checks with the assistant. Every change is versioned.

wiring · drag to edit

export png / svg

04 · CAD

Open your enclosure in real CAD.

Parametric starters for the enclosure and mounts, sized to your parts. Export STEP or STL and keep modeling in the tool you already use.

cad · enclosure starter

parameterswall2.0 mmpcb58 × 42standoffsM2 × 4export step / stl

05 · PCB

Design the board. Pass the checks.

PCB Studio takes you from schematic to a rule-checked layout, then packages everything for fab handoff.

SchematicERCFootprintsManufacturing

rule check 0 errors 2 warningsfab handoff →

06 · Protect

Patent prep, drafted from your build.

Prior-art search, claims, and a specification draft generated from your project - with an attorney introduction when you are ready.

patent prep · claims draft

claim 1 · independent

A line-following vehicle comprising: a reflectance sensor array; a controller configured to compute steering from…

prior art US 9,873,04168% US 10,224,91341% spec draft readyattorney intro →

07 · Ship

Walk into demo day with proof.

Export your files, hand off to a fab, and publish your project page for demo day.

billboard · demo day

senior design · 2026

Line-Following Robot

plinthdesign.org

publishedplinthdesign.org/p/4kf2… advisor view - no account needed

Outcomes

Weeks of planning become an afternoon.

1 14

idea to deliverables

hallucinated parts

every component checked against live supplier data

100%

versioned

every change tracked

Deliverable completeness · planning time saved

The workspace

Everything a build needs, in one place.

Each project opens a full set of linked tools, generated together and ready to refine.

BOM

Sourced bill of materials

Live pricing and stock from DigiKey and other distributors, checked at generation time so nothing on the list is a guess.

Wiring

Wiring studio

An interactive wiring canvas you can drag, edit, and export as PNG or SVG for your report.

PCB

PCB Studio and rule checks

Schematic, footprints, and electrical rule checks, with a fab-ready handoff when you are done.

Schedule

A week-by-week plan with milestones sized to your semester, not a generic template.

Firmware

Firmware and CAD starters

Starter code for every subsystem and a CAD starting point, so you never open a blank file.

Assistant

AI assistant

An engineer docked in your workspace. Ask it to explain a part, change a value, or regenerate a section.

The road ahead

Where Plinth goes from here.

01 · NowLive
The platform is live
The full build pipeline runs today: a sourced bill of materials with live pricing, draggable wiring diagrams, CAD and PCB starters, and a week-by-week schedule that teaches as you build.
02 · PilotNext
A paid pilot at Mines
Put Plinth in front of real capstone teams, prove the model against the way engineers actually work, and let their feedback sharpen every part of the product.
03 · ExpandPlanned
The next five schools
Take what proves out at Mines to the next five programs, adapting to each one’s courses, constraints, and the projects their students care about.
04 · TeamPlanned
Build the team
Bring on Mines students who fill the gaps I lack in business and marketing, so Plinth can grow faster than one founder can push it alone.
05 · VisionThe bet
Close the hardware gap
Do for building physical things what AI did for shipping software - make it possible for anyone with an idea to build it, regardless of their network or budget.

Launching soon

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plinth

Describe it. Plinth builds the plan.