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The ProtoFlow Blog
Honest, source-checked writing on AI PCB design, what the tools actually do, how to prompt them, and how to get from an idea to a clean KiCad project.
ESP32 Schematic Generator: Drafting an ESP32-S3 Board from Plain English
An ESP32 board is mostly the same scaffolding every time: a 3.3V rail, USB, strapping pins, and decoupling. That repetition is exactly what an AI schematic generator drafts well, here is how to use one without shipping a board that will not boot.
Read articleAI PCB Design in 2026: What's Real and What's Hype
An honest, stage-by-stage map of where AI actually helps in PCB design today, from plain-English schematic capture to autorouting, and where you still need an engineer in the loop.
9 min readSchematic Capture vs PCB Layout vs Routing: What AI Automates
Schematic capture, layout, and routing are three different problems with different inputs, outputs, and failure modes. Here is what each stage produces, where skipping a check gets expensive, and which AI tools target which stage today.
8 min readHow to Write a Great Prompt for AI Schematic Generation
AI schematic capture is only as good as the prompt you feed it. Here is a repeatable structure for describing a circuit, three worked before-and-after examples, and how to refine and verify the result instead of trusting the first pass.
7 min readFrom Idea to KiCad in Under an Hour: An AI-First Flow
We take a concrete ESP32-S3 environmental sensor from a one-paragraph brief to a manufacturable KiCad project in under an hour, then hand off to layout. AI does the heavy lifting on schematic capture, but every net still passes through your judgment before fab.
9 min readThe Real Cost of "Free" AI PCB Tools
Every AI PCB tool says "free" on the landing page. The word hides four very different business models. Here is how to read the fine print before a credit meter or a gated export button surprises you mid-project, and how to assemble a stack that stays free where it counts.
8 min readTry ProtoFlow free
AI schematic capture, real parts from LCSC/DigiKey/Mouser, DRC/ERC, and clean KiCad export, free on macOS, Windows, and Linux.
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