EEVblog

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.

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Electronics9/10

DigiKey

The component search that actually works — parametric filtering, datasheets inline, and reliable stock. The reference standard for sourcing parts when you need something specific.

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Electronics9/10

Adafruit

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.

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Electronics9/10

SparkFun

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.

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