Lesson One – Lighting an LED

This is a very simple but versatile circuit, which exists in your flashlight, table lamp, and many other home appliances.

What way it may look like if you build this circuit with an Arduino kit: 

We will build this step-by-step in TinkerCad Circuits:

STEP 1: Connect the Arduino board with the breadboard

Use 2 jump wires to connect the Arduino board with the breadboard.
The pin with 5V connects to the “+” bus, the “GND” pin connects with the “-” bus.

STEP 2: start with a red Jumper

 Land one side onto the positive bus; Connect another side to any empty row

STEP 3: Add LED

 Long leg connected to the same row as red jumper, other leg can land in any other free row

STEP 4: Add 220 Ohm Resistor

One leg lands in same row as short LED leg
Other Leg lands in the negative bus

STEP 5: Test the Circuit

Click “Start Simulation” , which means to connect the battery to the Arduino Board, and the LED in your circuit should light up!

If not it is time for troubleshooting!

Bonus: Try to build a circuit with 2 LEDs!

Here is what that circuit could look like: