Offered by Autodesk, Tinkercad is a free online platform you can use to build and test out your Arduino circuits ... push button, ultrasonic sensor, keypad), output (e.g., LED, DC motor, LCD ...

The Arduino is a cheap ... on how to connect an LED to a power source and add a button. Take time to assemble this and understand the circuit you just assembled. Once you’ve got a grasp on ...

The Arduino is a circuit board that you'll program to perform ... jumping wires, and a motor to make everything work. On top of all that, you'll need to program the device to do what you want ...