You can change the colors of the wires clicking on them:Īnd you can alter the settings for each component by clicking on it. Now connect the resistor to the pole of the LED called cathode, the one that’s straight, on the left.įinally, connect the anode, the right pin of the LED, to the positive pole of the battery: For example the battery has a positive pole and a negative pole:ĭrag the negative pole to one of the poles of the resistor: Now hovering each item will show you the connections you can create from them, or to them. Pick a 9V voltage battery, a resistor and a LED: Now you can drag and drop components from the right sidebar on the main screen.
It’s a very cool web application.Ĭreate a free account on the site, then from the dashboard choose the Circuits menu:Ĭlick the Create new Circuit button, and you’ll see the circuit builder interface: Tinkercad, from Autodesk, the creators of the famous AutoCAD, lets you create and simulate electronic circuits, but not just that - you can also create designs for 3D printing. In this post we’re going to use Tinkercad, available for free use at. There are many online tools you can use to simulate a circuit. You don’t need to buy any gear or components, if you don’t want, but I highly recommend you to do so, and to get a starter kit from Elegoo called “ELEGOO UNO R3 Project Most Complete Starter Kit”. We’ll talk about resistors and LEDs in more details later, but let’s now create our first circuit. We will use a 9V battery, a 470 ohm resistor, and a LED. One of the simplest correctly-working circuits we can build is a circuit to light a LED.
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