ESP32 Tools & Guides — Pinout, Projects and AI Hardware Builds
Everything ESP32-specific in one place: the interactive pinout tool with each official board's pin functions, and the guides we wish existed when we started — AI hardware builds, starter projects, and the deep-sleep tricks that decide whether your battery project lasts days or months.
Start with the pinout, then pick your first project
Ninety percent of ESP32 frustrations trace back to one pin decision: an analog sensor on an ADC2 pin that dies the moment Wi-Fi turns on, a button on a strapping pin that blocks boot, or 5 V logic fed straight into a 3.3 V input. The pinout tool lists every pin of the four boards we cover with the functions straight from Espressif's official header tables — plus the boot-time notes that aren't obvious from the silkscreen. Once your wiring is right, the project guides walk you from blink-and-buttons to a cloud-connected AI voice assistant.
Why the ESP32 and not something else
For ~$5 a dev board you get Wi-Fi and Bluetooth, dual cores, deep sleep measured in microamps, and a chip family that scaled from the classic ESP32 to Wi-Fi 6 and Zigbee on the C6 — the same code ecosystem throughout. The same community momentum is what turned it into 2025's favorite chip for AI gadgets: voice assistants, desktop AI boxes, and display toys all ship around it. That also means the pinout questions change per board, which is exactly why every chip variant here has its own official pin table rather than one generic diagram.