About ESP32 Pinout

ESP32 Pinout is a free, lightweight, interactive GPIO reference tool designed for ESP32 developers, makers, Arduino users, and embedded engineers.

The project was created to solve a simple problem: every other ESP32 pinout reference was either a static image, a blog post you had to scroll through, or an outdated table. We wanted something fast, interactive, and practical — click a pin, see its functions instantly.

Our Mission

To become the fastest, most reliable, and most practical GPIO reference for the ESP32 ecosystem. We're building a complete topical hub around ESP32 hardware documentation — not just a pinout diagram.

What We Cover

ESP32 GPIO functions and multiplexing
Safe and unsafe GPIO pins
ADC / DAC pins (including Wi-Fi conflicts)
PWM channels and configuration
Touch sensor pins
UART, SPI, I2C communication pins
Boot strapping pins and their effects
RTC GPIO for deep sleep wake-up
ESP32 variant comparisons (S3, C3, S2, C6, H2)

Data Sources & Accuracy

All pin data is sourced from Espressif's official documentation:

Version History

v1.1 (July 2026) — Added supporting guides, enhanced navigation, improved mobile UX
v1.0 (January 2026) — Initial release with interactive pinout tool

Devender Gupta

Developer & Hardware Enthusiast

ESP32 Pinout is built and maintained by Devender Gupta, an embedded systems developer and maker. When not documenting ESP32 pins, he builds IoT projects, experiments with hardware, and contributes to open-source.

Twitter/X: @devenderkg · GitHub

Not affiliated with Espressif Systems. ESP32 is a trademark of Espressif Systems (Shanghai) Co., Ltd.