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Welcome to the first very tutorial with us. By now I am quite confident that you have all being equipped with the One student, One Arduino kit and the Cartuino handbook. Those are your primary needs. So let's now learn about those things in your kit.
- Arduino Uno
Learn about your basic electronics
The Most Common Basic Electronic Components
These are the most common components:
- Resistors
- Capacitors
- LEDs
- Transistors
- Inductors
- Integrated Circuits
Resistor
I didn’t understand the resistor in the beginning.
It didn’t seem to do anything! It was just there, consuming power. But with time, I learned that the resistor is actually extremely useful.
You’ll see resistors everywhere. And as the name suggests, they resist the current.
But you are probably wondering: What do I use it for?
You use the resistor to control the voltages and the currents in your circuit.

How?
By using Ohm’s law.
Let’s say you have a 9V battery and you want to turn on a Light-Emitting Diode (LED).
If you connect the battery directly to the LED, LOTS of current will flow through the LED!
Much more that the LED can handle. So the LED will become very hot and burn out after a short amount of time.
But – if you put a resistor in series with the LED, you can control how much current is going through the LED.
In this case we call it a current limiting resistor.
A Light Emitting Diode – or LED for short – is a component that can give light.
We use LEDs to give a visual feedback from our circuit.
For example to show that the circuit has power. But, you can also used them to make cool light-show circuits.
You see these components everywhere:
In your laptop, on your mobile phone, on your camera, in your car +++
And you can find many different types of LEDs.
A very common circuit to build as a beginner is the blinking light circuit.







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