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About this site and where the data comes from
This site exists because looking up the same pinout facts over and over is a waste of an afternoon.
Where the data comes from
- Espressif official datasheets, technical reference manuals and the ESP-IDF programming guide.
- Cross-checked on 2026-10-20.
- Every pinout and peripheral page links to the official documentation. Fields that vary between chips or releases are marked "verify against official docs" instead of being guessed.
Calculators give engineering estimates, not guarantees. Always measure your own board before committing to a battery size or a production run.
Privacy
All tools run client-side. Nothing you type is sent to a server. Page views are measured with privacy-friendly analytics that set no cookies.