Electrical & Electronics

Open-source hardware plus a huge library of beginner-friendly learning guides for every board. Unlike ordinary electronics shops, each product comes with a detailed tutorial and library.

Step-by-step, illustrated guides for microcontroller, sensor and electronics projects. Unlike product pages it carries the part you bought all the way to a working project.

Free lessons, calculators and a forum teaching electrical and electronics from the ground up. Unlike scattered videos it progresses in textbook order from DC to digital design.

A list of libraries and projects for Python on microcontrollers (CircuitPython). Unlike general embedded lists it focuses on programming hardware in Python rather than C.

A list of tools, manufacturers and communities for electronics engineers and hobbyists. Unlike general hardware lists it focuses on PCB design, component sourcing and simulation.

A list of libraries and projects for the ESP8266/ESP32, cheap microcontrollers with WiFi. Unlike general embedded lists it focuses on this chip family and wireless projects.

A free archive teaching electronics fundamentals — resistors, capacitors, transistors, op-amps — step by step with the formulas. Unlike project sites, it builds the theory before you build a circuit.

Worked electronics projects and tutorials with schematics and code. Unlike product catalogues it gives complete projects — schematic, code and step-by-step explanation together.

Browser-based PCB schematic and layout design, tied to the JLCPCB parts library. Unlike desktop tools such as KiCad it needs no install and connects straight to fabrication; in exchange it is bound to the JLCPCB ecosystem.

A simulator that lets you draw a circuit in the browser and shows current and voltage as a live animation. Unlike static schematics you see how the electrons flow in real time — for intuition.

The daily hub for hardware hacks and maker projects. Unlike project-hosting sites it is a news publication — it curates and writes up others’ work rather than hosting it.

A hardware community sharing step-by-step IoT and embedded projects. Unlike Hackaday’s news focus, projects here are hosted with full build instructions.

Low-cost, small-batch PCB fabrication and assembly. Compared with PCBWay it is price-focused and tightly integrated with EasyEDA; in exchange its custom-process and material options are narrower.

PCB prototyping and fabrication alongside a project-sharing community. Compared with JLCPCB it is broader on custom processes, material choice and extra services such as CNC and 3D printing.

A library of free ready-made CAD symbols and footprints for parts, exportable to EDA tools. Unlike drawing each symbol by hand it gives ready, verified parts; SnapEDA was renamed SnapMagic in 2024.

A maker-electronics store with an extensive project-based tutorial system tied to each module. Similar to Adafruit; it differs in building an ecosystem around its own product line (the Qwiic connect system).

A tutorial library for electronics basics and embedded projects. Similar to Adafruit; it leans more into foundational concepts like soldering, power and communication protocols.

Browser 3D design plus circuit and Arduino simulation — an electronics playground for beginners. Unlike real hardware you can build a circuit and run Arduino code in simulation with no risk of frying anything.