Category
Components, datasheets, circuit design, and embedded systems
The component search that actually works — parametric filtering, datasheets inline, and reliable stock. The reference standard for sourcing parts when you need something specific.
Limor Fried built the gold standard for maker electronics — tutorials that actually teach you why something works, components you can trust, and a community that welcomes beginners without dumbing things down.
The other pillar of maker electronics. Strong on tutorials for getting hardware talking to each other, and their breakout boards save hours of low-level wiring work.
Dave Jones's teardown and test series is required viewing if you're serious about electronics engineering. The forum is one of the best technical communities online.
Free electrical engineering textbooks plus a reference library covering everything from Ohm's law to op-amp design. Better organized than most university course material.
The platform that opened hardware to everyone — still the fastest path from idea to blinking LED. The reference docs and project hub have aged well.
The open-source PCB design suite that closed the gap with Altium. Schematic capture, layout, and 3D preview without a subscription — the right choice for most projects.
Adafruit's Python port for microcontrollers makes hardware accessible without C. The best on-ramp for software developers crossing into embedded.