Chapter 02 – ELECTRONICS IN BRIEF

No previous electronic experience is required to play and have fun with this kit. In this chapter there are some explanations on how the different components are identified and how they work. If in any point you are worried about how a component is used or why it’s not working the internet offers a treasure trove of advice or you can connect to our forum and try to ask why that specific component is not working.

LED (Light Emitting Diode)

What it Does:

Emits light when a small current is passed through it. (only in one direction)

Identifying:

Looks like a mini light bulb. Can be transparent or with a semi transparent color.

No. of Leads:

2 (one longer, this one connects to positive) or more if tri-color LED (RGB) or more than one color.

Things to watch out for:

- Will only work in one direction, or if properly wired

- Requires current limiting resistors

More Details:

http://ardx.org/LED

DIODE

What it Does:

The electronic equivalent of a one way valve. Allowing current to flow in one direction but not the other.

Identifying:

Usually a cylinder with wires extending from either end. (and an off center line indicating polarity).

No. of Leads:

2

Things to watch out for:

- Will only work in one direction (current will flow if end with the line is connected to ground)

More Details:

http://ardx.org/DIOD

RESISTORS

What it Does:

Restricts the amount of current that can flow through a circuit.

Identifying:

Cylinder with wires extending from either end. The value is displayed using a color coding system (for details see next page).

No. of Leads:

2

Things to watch out for:

- Easy to grab the wrong value (double check the colors before using)

More Details:

http://ardx.org/RESI

TRANSISTOR

What it Does:

Uses a small current to switch or amplify a much larger current.

Identifying:

Comes in many different packages but you can read the part number off the package. (P2N2222AG in this kit and find a datasheet online)

No. of Leads:

3 (Base, Collector, Emitter)

Things to watch out for:

- Plugging in the right way round (also a current limiting resistor is often needed on the base pin)

More Details:

http://ardx.org/TRAN

DC MOTOR

What it Does:

Spins when a current is passed through it.

Identifying:

This one is easy, it looks like a motor. Usually a cylinder with a shaft coming out of one end.

No. of Leads:

2

Things to watch out for:

- Using a transistor or relay that is rated for the size of motor you’re using.

More Details:

http://ardx.org/MOTO

PIEZO ELEMENT (Speaker)

What it Does:

A pulse of current will cause it to click. A stream of pulses will cause it to emit a tone.

Identifying:

In this kit it comes in a little black barrel, but sometimes they are just a gold disc.

No. of Leads:

2

Things to watch out for:

- Difficult to misuse.

More Details:

http://ardx.org/PIEZ

INTEGRATED CIRCUIT (IC)

What it Does:

Packages any range of complicated electronics inside an easy to use package.

Identifying:

The part ID is written on the outside of the package. (this sometimes requires a lot of light or a magnifying glass to read).

No. of Leads:

2 – 100s (in this kit there is one with 3 (TMP36) and one with 16 (74HC595)

Things to watch out for:

- Proper orientation. (look for marks showing pin 1)

More Details:

http://ardx.org/ICIC

PUSHBUTTON

What it Does:

Completes a circuit when it is pressed.

Identifying:

A little square with leads out the bottom and a button on the top.

No. of Leads:

4

Things to watch out for:

- these are almost square so can be inserted 90 degrees off angle.

More Details:

http://ardx.org/BUTT

POTENTIOMETER

What it Does:

Produces a variable resistance dependent on the angular position of the shaft.

Identifying:

They can be packaged in many different form factors, look for a dial to identify.

No. of Leads:

3

Things to watch out for:

- Accidentally buying logarithmic scale.

More Details:

http://ardx.org/POTE

PHOTO RESISTOR

What it Does:

Produces a variable resistance based on the amount of the incident light.

Identifying:

Is usually a little disk with a clear top and a one or more curvy lines underneath.

No. of Leads:

2

Things to watch out for:

- Remember it needs to be in a voltage divider before it provides a useful input.

More Details:

http://ardx.org/PHOT

BREADBOARD

What it Does:

Is the base component that is used in the kit to implement all the experiments

Identifying:

Is white and quite big, close to the size of the packaging box. In one side has a sticker and in the other side has more than 600 holes.

Things to watch out for:

- Will only work using a specific wiring order

- Requires some attention not to bend components with long leads, like LEDs and Photoresitor.

More Details:

http://ardx.org/BREADBOARD

LEAD CLIPPING

Some components in this kit come with very long wire leads. To make them more compatible with a breadboard a couple of changes are required.

LEDs:

Clip the leads so the long lead is ~10mm long and the short one is ~7mm.

Resistors:

Bend the leads down so they are 90 degrees to the cylinder. Then snip them so they are ~6mm long.

Other Components:

Other components may need clipping. Use your discretion when doing so.

RESISTOR COLOR CODE aka RESISTORS FOR DUMMIES

Examples:

green-blue-brown – 560 ohms

red-red-red – 2 200 ohms (2.2k)

brown-black-orange – 10 000 ohms (10k)

first digit

second digit

third digit (if available)

# of zeros

tolerance

0 – Black
1 – Brown
2 – Red
3 – Orange
4 – Yellow
5 – Green
6 – Blue
7 – Purple
8 – Grey
9 – White

20% – none
10% – silver
5% – gold
2% – red
1% – brown

2 comments

  1. [...] 01 – INTRO Chapter 02 – ELECTRONICS IN BRIEF Chapter 03 – A SMALL PROGRAMMING PRIMER Chapter 04 – THE BREADBOARD Chapter 05 – HARDWARE [...]

  2. I don’t even know the way I stopped up right here, but I
    believed this post was once good. I do not know who you are however certainly you are going to
    a famous blogger if you happen to aren’t already.
    Cheers!

Leave a Reply

Your email address will not be published. Required fields are marked *

You may use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <strike> <strong>


istanbul evden eve nakliyat istanbul evden eve nakliyat istanbul evden eve nakliyat sarıyer evden eve nakliyat beylikdüzü evden eve nakliyat şişli evden eve nakliyat