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SolderHub — Arduino, ESP32 & Raspberry Pi Projects, Guides, and Live Simulation

Circuit Simulator Early stage

Simulate circuits right in your browser

Wire up boards and test code with no hardware needed. It's brand new and still rough around the edges — and it's open source, so if you'd like to help shape it, contributions are very welcome.

Reference library

Everything a maker needs in one place

Sensors

Pinouts, wiring diagrams, and working code for every common sensor — for Arduino, ESP32, and Raspberry Pi.

Calculators

Instant tools for resistors, power budgets, PWM, LoRa airtime, I²C pull-ups — no sign-up needed.

Libraries

Install commands, example code, and compatibility notes for the most-used Arduino and ESP32 libraries.

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Share your project with the community

Submit a guide with schematics, code, and a Wokwi simulation — join the makers already featured on SolderHub.