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BlueGrays

Arduino Projects

Explore Arduino projects, manage components, and track your electronics journey.

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Tools

  • Color code
  • LED resistor
  • Ohm's law
  • SMD code
  • Capacitor code
  • LED voltages

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Tools

Electronics tools

The calculations and tables you need most while building circuits, in one place. Runs in your browser and gives the same results as the app.

Resistors

4 tools
  • Color code3–6 bands, both waysFree
  • SMD code472 · 1002 · 01CFree
  • Series / parallelMixed circuits, step by step
  • Standard valueE12/E24, reach a target with two

Calculators

6 tools
  • Ohm's lawVoltage, current, powerFree
  • LED resistorResistor by LED colorFree
  • Voltage dividerSuggests R1/R2 for a target
  • 555 timerFrequency, duty cycle
  • Battery lifeIncluding sleep current
  • Op-amp gainInverting, non-inverting

Capacitors and inductors

4 tools
  • Capacitor code104 = 100 nFFree
  • Series / parallel CCapacitor networks
  • RC time constantCharge, discharge, filter
  • Inductor code101 = 100 µHFree

Reference

4 tools
  • LED voltagesVolts by colorFree
  • TransistorsNPN, PNP, MOSFET
  • PinoutArduino, ESP32, Raspberry Pi
  • Logic gatesTruth tables

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