PINOUT · HIGHEST DEMAND
ESP32 DevKit V1 Pinout (38-pin)
Interactive per-pin reference with ADC/touch/PWM flags, strapping and safe-GPIO warnings. Per-pin anchors for forum answers; print-ready layout.
PINOUTESP32-C3 SuperMini Pinout (16-pin)
The $2 RISC-V board reference: boot-strapping warnings (GPIO 2/8/9), ADC notes and why your board won't flash.
CALCULATORResistor Color Code (4/5/6-band)
Click the bands, get the value: tolerance, min/max range, nearest E-series value, printable chart and mnemonic.
CALCULATOR · UNIQUEIoT Battery Life Calculator
Duty-cycle-aware runtime for deep-sleep projects — the tool that answers "how long will my ESP32 run on this LiPo?" with chip presets.
CALCULATORWS2812B / NeoPixel Power
PSU size, fuse rating and injection plan from LED count and brightness — realistic 20mA vs worst-case 60mA.
CALCULATORVoltage Drop & Wire Gauge
12V wiring done right: drop %, the 3%-rule verdict and the gauge you should actually use (round-trip modeled).
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