Breadboarding Electronics

Graduation Requirements
Science Laboratory Physical
Equipment/Materials Needed
You will need the following:
22 gauge wire (Leads)
9 Volt Battery

A small electronic kit can be purchased on Amazon Elegoo kit
Electronics have changed the world. Lighting a Light Emitting Diode (LED)
Badge Completion Requirements

Electronics (Breadboarding)

Electronics have changed the world. Today we find the use of electronic commonplace. Let's take a look at the world of electronics.

Starting with a Breadboard:

Please develop a presentation demonstrating your skill using a breadboard. In your presentation please address the following:

Why are these electronic devices called "breadboards"?

Explain where the positive and negative connections are made on the breadboard.

How will you get the electrical voltage to the components on the interior of the breadboard?

What's the purpose of the ditch in the middle of the breadboard?

Find a breadboard located in the lab area and develop a video explaining how to safely and correctly connect the breadboard to a battery. 

Use a 9-volt battery and 22 gauge wires to make the connects. Do not use any components on the breadboard, just leads and battery.


A resistor is a passive two-terminal electrical component that implements electrical resistance as a circuit element. In electronic circuits, resistors are used to reduce current flow, adjust signal levels, to divide voltages, bias active elements, and terminate transmission lines, among other uses. 


The brightly colored bands identify the volt resistance of a resistor.

resistor code

An LED (light emitting diode)  cannot be used without using a resistor.

Resistance is recorded with the units of ohms

To develop an understanding of electronics and their applications we'll need to incorporate ohms law.

Ohms Law

V = I R

V = volts in volts

I = current in amps

R = resistance in ohms

V=IR  or  R = V/I  or  I = V/R

Develop a presentation that demonstrates your understanding of resistors. In your presentation take five different resistors, from the lab and identify the resistance in ohms of each resistor using the chart above.

LED (Light Emitting Diode)


A light-emitting diode (LED) is a semiconductor light source that emits light when current flows through it. 


LED!!!!!!Light Emitting Diode 

Explain: polarity, cathode, and anode

Explain: forward voltage 


From the lab find the following:



     Resistor  (before we start we need to determine the resistor size)


     lead wires

     9-volt battery 


     Light the LED


     Normal laboratory safety


     Connect the battery to the + and - rail of the breadboard

     Using a lead connect the + rail to a 450-ohm resistor

     Connect the resistor to the long leg of the LED

     Using a lead wire connect the short leg of the LED to the - rail


Should light

 Repeat the experiment above removing one lead wire

 Repeat the experiment above removing one more lead wire


Develop a video to submit and discuss with your mentor demonstrating your understanding of LED's, Resistors, Breadboards and the movement of electricity.