Use this tag to ask about electronics-related issues with your Arduino. For example: driver transistors, Ohm's Law, current-limiting resistors.

This tag is for the hardware side of your Arduino project, particularly electronics questions. Relevant questions would be about:

  • Transistors
  • Diodes
  • Resistors
  • Capacitors
  • Inductors
  • Current-limiting resistors
  • Ohm's Law
  • Power calculations
  • Switching devices on and off
  • Input protection circuits
  • Output protection circuits
  • Opto-couplers
  • Choice of components
  • Other electronics-related questions

Also see: