PinHub is a searchable, source-backed pinout catalog for development boards, SBCs, and microcontroller modules — Raspberry Pi, Arduino, ESP32, STM32 Nucleo, Teensy, Adafruit, Seeed, SparkFun, BeagleBone, Jetson, and more. Every board links to official documentation, and most carry an interactive pin map.

Live: pinhub-mauve.vercel.app

Features

Route	What it does
/	Catalog: search boards and pins (pico sda, rpi5 spi, esp32 gpio27), filter, favorite, and open board detail
/pinout/[id]	Logic and wiring cautions, selected-pin summary and diagram jump, interactive pin map, recorded capability filters, primary-role highlighting, net probing, complete print schedule, and Markdown/CSV export
/boards/[id]	Specs, wiring warnings, sources, Static pin map, and a fitted physical-board Dynamic view with touch-size zoom and Inspect (grouped maps remain connector schematics)
/pinout/[id]/opengraph-image, /boards/[id]/opengraph-image	1200×630 link-preview image of the board's pins, colored by role
/compare	Discover boards with labeled filters, then compare up to four side by side; differences first; shareable URL
/planner	Review board cautions, mark the pins you use, and fit I2C, SPI, UART, PWM, and ADC into what's left
/link	Wire two boards over UART or I2C, with board cautions and logic-level mismatch warnings
/prices	Dated USD prices and stock for curated listings, refreshed hourly
/collections	Shareable board sets from your local library, with explicit four-board comparison subsets

Favorites and collections use local storage; if the browser refuses a write, PinHub identifies changes kept for this visit only. Nothing requires an account.

JSON API

Read-only, no key required. Each route below rejects query strings (400) and mutating methods (405).

curl https://pinhub-mauve.vercel.app/api/boards                 # index
curl https://pinhub-mauve.vercel.app/api/boards/raspberry-pi-5  # full record
curl https://pinhub-mauve.vercel.app/api/pins                   # pin index
curl https://pinhub-mauve.vercel.app/api/prices                 # price snapshot

CLI

npm install -g @dheerajsom/pinhub
ph rpi5

See cli/README.md.

Development

Next.js App Router, TypeScript, Tailwind CSS v4. Board data is static in src/lib/boards.ts.

npm install
npm run dev
npm run lint && npm run typecheck && npm test && npm run build
npm run test:e2e   # Playwright, port 3100

The build also validates board visuals and source links. Prices are optional locally: without Blob credentials the app uses the bundled dated snapshot (see docs/board-prices.md).

Documentation

• CONTRIBUTING.md — adding boards, reporting pinout errors
• docs/DESIGN.md — design language and UI reference
• AGENTS.md / CLAUDE.md — rules for automated contributors

Accuracy and license

PinHub is a reference, not a substitute for vendor documentation. Board revisions change pin assignments; check the linked sources before wiring anything you can't replace, and open an issue if an entry disagrees with your hardware.

MIT License. Catalog data is compiled from vendor documentation, which remains the vendors' property. PinHub is not affiliated with any vendor.