The rows of a solderless breadboard are connected inside, allowing you to connect components by plugging them into the same row as each other. If you want to follow along with your physical Arduino Uno (or compatible) board, you'll also need a USB cable and a computer with the free Arduino software (or plugin for the web editor) installed, plus your Arduino Uno board, solderless breadboard, some LEDs, resistors (any value from 100-1K ohms will do), and breadboard wires. It's perfect for learning, teaching, and prototyping. Tinkercad Circuits is a free browser-based program that lets you build and simulate circuits. You can even view this lesson from within Tinkercad if you like! Explore the sample circuit and build your own right next to it! Explore the sample circuit in the workplane, and build your own along side it. You can follow along virtually using Tinkercad Circuits. Expanding upon the last lesson on blinking an LED, We'll connect some LEDs to the Arduino Uno and compose a simple program to light them up in a pattern. Let's learn how to control multiple LEDs using Arduino’s digital outputs and a breadboard.
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