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ESP32 ADC Pins Guide
Complete guide to analog input on ESP32. Learn ADC1 vs ADC2 differences, Wi-Fi conflicts, resolution settings, and Arduino code examples.
ADC GPIOESP32 GPIO Guides & Tutorials
Comprehensive guides to help you understand every aspect of ESP32 GPIO, peripherals, and pin configuration.
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ESP32 PWM Pins Guide
Master pulse width modulation on ESP32. 16 channels, frequency vs resolution trade-offs, LED fading, servo control, and motor driving.
PWM GPIO🛡️
ESP32 Safe GPIO Pins
Definitive list of safe, cautionary, and dangerous GPIO pins. Green-yellow-red categorization with beginner-friendly cheat sheet.
Safe Pins GPIO🚀
ESP32 Strapping Pins Explained
How GPIO0, GPIO2, GPIO5, GPIO12, and GPIO15 control boot mode, flash voltage, and UART output during power-up.
Boot GPIO🔗
ESP32 UART Pins Guide
Serial communication on ESP32. UART0, UART1, UART2 default pins, remapping, baud rates, and hardware flow control.
UART GPIO🔄
ESP32 I2C Pins Guide
I2C communication on ESP32. Default SDA/SCL pins, dual bus usage, remapping, and troubleshooting tips.
I2C GPIO⚡
ESP32 SPI Pins Guide
SPI communication with VSPI and HSPI buses. Default pin assignments, dual bus operation, and high-speed configuration.
SPI GPIO🖐️
ESP32 Touch Pins Guide
Capacitive touch sensor guide. T0–T9 channels, touchRead(), touch interrupts, wake-from-sleep, calibration, and Arduino examples.
Touch GPIO💤
ESP32 Deep Sleep & RTC GPIO Guide
Power management guide. Wake sources (timer, ext0, ext1, touch, ULP), RTC GPIO pins, ULP co-processor, and battery optimization.
Deep Sleep GPIO📷
ESP32-CAM Pinout Guide
Complete ESP32-CAM reference. Camera interface (OV2640), SD card, power requirements, programming setup, and common troubleshooting.
Camera GPIO⚖️
ESP32 vs ESP8266 Comparison
Head-to-head comparison of specs, GPIO, power, Wi-Fi performance, cost, ecosystem, and when to choose each chip in 2026.
Comparison GPIO🔮
More Guides Coming
ESP32-CAM advanced topics, ESP32-S3 optimized GPIO usage, and ESP32-C6 Matter integration guides are in development.
🔧 Try the Interactive Pinout Tool
Visualize every pin, its functions, and hardware notes in real-time.
Open Interactive Pinout