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This tutorial shows you how to build a very simple circuit which lights up a single Light Emitting Diode (LED).

You will learn:

  • About resistors
  • About LEDs
  • How to read a circuit diagram
  • How to build a circuit on breadboard


You need to know about tools and electronic components before starting this tutorial - if you haven't read the Start Electronics Now! article, then read it now. Learn about batteries, resistors and LEDs before starting this tutorial.


Skill Level
Cost Free
Required Tools
Breadboard Breadboard wire links 9V battery (nine volt battery) Battery clip 1k resistor (1000 ohm, brown - black - red) 5mm red LED
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