About i2c.net
i2c.net is a structured reference for the i2c bus — built so that "what connects to what," "what's this address," and "will this hurt my board" all have one fast, correct, citable answer.
What this is
One dataset, every page
Underneath the site is a single curated dataset: 6 connector standards and 50 sensor/board entries, each with verified pinouts, i2c addresses and voltage ranges. A pure compatibility engine reads that dataset to generate every standard page, every board page, and every one of the pre-computed connector-pairing verdicts — the same engine also powers the three interactive tools (compatibility checker, pinout visualizer, connector picker). One brain, every surface, so an answer on a board page never contradicts the same fact on a compatibility page.
Facts on this site — pinouts, addresses, voltage tolerances, pull-up values — are checked against vendor datasheets and official documentation, not guessed or generated. Where a spec is genuinely ambiguous (a datasheet quoting an 8-bit address form, for instance) we say so explicitly rather than picking one silently.
How it's funded
Reader-supported, plainly
i2c.net earns a small commission on qualifying purchases through outbound affiliate links (Amazon and others) — marked rel="nofollow sponsored" throughout, at no extra cost to you. The free i2c tool download is sponsor-unlocked the same way. Recommendations are not for sale: a product appears because it's a common, correct answer to "what do I buy for this," not because of a payment.
Contact
Corrections, data, questions
Found a wrong pinout or an outdated address? That's exactly the kind of thing worth a message — get in touch. Know a board that belongs in the dataset? Submit it with a datasheet link and it'll generate its own page, its compatibility verdicts and its address-list entry automatically. How we handle your data is on the privacy page.