When you get started in the Arduino world, it’s best to learn how to create a simple project and figure out how to code it. But if you don’t have access to an Arduino, need a faster way to breadboard a circuit, or just want to try something new, 123D Circuits is a great way to get it online.
All you need
123D Circuits consists of 4 different sandboxes: there is an electronics lab; PCB Design Center; Circuit Scribe tool; and a MESH creation center. The Electronics Lab will be most helpful for creating an Arduino prototype, and this is what we will be using to create an Arduino project in the very near future.
You can also order some of the things you’ll need to build your real life project directly from the site.
The Electronics Lab lets you actually test your creations by entering Arduino code and seeing what happens. Let’s take a look at a sample project to see how it works.
Sample Project: Arduino Traffic Light
When you first enter the Electronics Lab, you will see a mockup and nothing else. Let’s change this. Click Components in the top right corner to see a list of things you can add to the sketch. A quick search for «arduino» shows three options, and we’ll add the Arduino UNO R3 by clicking first on the icon and then on the workspace.
Another quick search for «led» shows us a simple LED; click the icon, then click on the layout to place the LED. Once placed, the dropdown in the upper right corner of the workspace allows you to change the color. We will post one red, one yellow and one green.
Now to connect everything. To add a wire, simply click anywhere on the breadboard without clicking on the component first (you can also use the «breadboard» component) and click on the space, either on the breadboard or on the Arduino, where you want the connections to be made; You can change the color just like LEDs; using the drop-down list in the upper right corner of the workspace.