🛠️ ESP32 Developer Tools
Interactive utilities to help you build faster with ESP32.
GPIO Finder
Search and filter all 38 ESP32 pins by function, safety level, or pin number. Find ADC, PWM, I2C, SPI, UART, and touch pins instantly.
LiveADC Voltage Calculator
Convert ESP32 ADC raw values (0–4095) to voltage. Supports all attenuation settings: 0dB, 2.5dB, 6dB, and 11dB.
LivePWM Frequency Calculator
Calculate PWM frequency, resolution, and duty cycle combinations. Find the optimal settings for LEDs, servos, and motors.
LiveESP32 Pin Quiz
Test your ESP32 GPIO knowledge with interactive quizzes. Perfect for beginners learning which pins are safe to use.
LiveInteractive Pinout Diagram
Click on any pin in the ESP32 diagram to see full hardware details, multiplexed functions, and engineering notes.
LiveBoot Pin Checker
Select your GPIO pins and get instant conflict analysis. Strapping pin warnings, ADC2/Wi-Fi conflicts, input-only violations, and boot mode requirements.
Live💡 Pro Tip: Bookmark the GPIO Finder for quick reference during development.