Maker tools
Small, honest tools that run in your browser. No sign-up needed.
- Code generatorBoard + sensors + outputs → tested sketch, wiring and parts list.
- Pin conflict checkerCatches boot-strapping pins, ADC2 + Wi-Fi, input-only and 5 V traps.
- LED resistorSupply, LED forward voltage and current → nearest E12 resistor.
- Voltage dividerBring 5 V signals down to safe 3.3 V logic.
- Battery lifeDeep-sleep duty cycles to days of runtime.
- Resistor colour code4/5/6-band colours ↔ value, with the nearest E12/E24.
- RC time constantCharge time, filter corner and button-debounce capacitor.
- Stepper calculatorMicrostep pins, RPM ↔ steps/s, steps/mm and A4988 Vref.
- Solar & battery sizingPanel watts and battery Ah for Indian sun hours.
- Wire gauge & voltage dropAWG / mm² for your current and cable length at 3.3–24 V.
- PWM / LEDCFrequency vs resolution limits for ESP32 LEDC timers.
- Current budgetWill your regulator survive Wi-Fi bursts and servos?
- I2C address tableEvery common module, its default and alternate addresses.
- Serial monitor & plotterWeb Serial in your browser — no IDE needed.