❌ The problem

Every PCB design is a constraint problem: you need components that are electrically and functionally compatible with each other. Solving it by hand means hours — often days — of tracking down parts, reading datasheets, adding a component, discovering a conflict, and backtracking. Pick an MCU and the cascade begins: it needs a specific crystal, external flash on the QSPI bus, a regulator that can source its peak current. Every choice ripples through the whole design.

✅ The solution

Stillwind Builder formalizes your design constraints as an explicit system of equations and solves for matching components.

• Verified specs. Before we show you a part, a second model independently re-reads its datasheet and verifies the specs match — so the numbers you design against are what the datasheet actually says, not extraction artifacts.
• Dependency-aware. When you lock in a component, the agent reads its datasheet for the supporting parts it requires — voltage regulators, crystals, external flash — and updates the constraint system. The ripple effects of each choice are handled instead of discovered later.
• You stay in control. You set the direction and make the calls that matter; the agent handles the combinatorial grind.

At the end, you download your BOM and start wiring.

🚀 Try it

The public beta is live and free during launch week: https://stillwind.ai

Building hardware and want to tell us what's broken? We'd genuinely love that — grab time with us: https://calendar.app.google/Bd7KQEAYLgt6SmHZ6