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This module contains step by step instructions and pictures showing how to assemble the MSP430 breadboard kit used in Elec 220 for very simple I/O. It uses the TI MSP430 Launchpad development board, a double breadboard, and some basic circuit components (switches and a 7-segment display) to establish an easy to understand I/O scheme.

Breadboard basics

The solder-less breadboard is a convenient way to setup simple circuits and make connections quickly between electronic components. Each hole in the breadboard has a spring clip that makes a connection to the wire/ IC lead you put into it. The breadboard connects each vertical row of holes in the main secion , giving you five holes where you can tie together parts of an electrical circuit. Any time there is a gap between two adjacent holes, they are not automatically connected together.

You will notice some red and blue horizontal lines of holes in the top, bottom, and middle of the breadboard. These are your busses . In most simple breadboards you will use these for power (VCC and GND) as we do here. The bus sections are not automatically connected together. If you want power to all of the busses, you need to connect them all together as shown below.

Lastly, notice the divided channel down the middle of the breadboard. This channel is specifically sized for DIP packaged integrated circuits. You can put a chip across the channel, and have access to each of its pins using the vertical rows above and below. Always put chips across the channel, otherwise you will connect the opposite side pins together and your circuits won't work as expected.

Be careful when removing chips

If you use your bare hands to try and remove a chip from the breadboard (you will notice it can be difficult, especially with components with lots of pins), there is a good chance you will end up with the chip plugged into your finger afterwords. You hand has a natural tendency to rotate things when you are pulling hard, so watch out. There are some IC removing tools around the lab, use one of them or ask your labbies to help you if you accidentally misplace a chip.

The connection scheme in a typical breadboard

An illustration of how the breadboard holes are connected together in the breadboards used for the lab. Notice that no connections cross the center channel and that the busses are connected horizontally while the main face of the board is vertical.

Steps for assembling the breadboard for elec 220

Make all connections with the MSP430 disconnected from USB power.

Be careful when removing chips

See above for explanation. Use an IC removal tool or ask your labbies for help.


The wiring below is suggested and works well, but if you have any ideas on how to improve the circuit, feel free to implement them in your breadboard. Just be sure that you can successfully run the test program at the end.

1) get your materials

    You will need:

  • 1 MSP430 Launchpad
  • 1 Double Width Breadboard
  • 1 Breadboard Wire Kit
  • 1 MC14511B Binary to Decimal Converter
  • 1 Kingbright Green 7-segment display
  • 1 4 Switch SPST DIP Switch Pack
  • 2 470 ohm isolated resistor arrays

Questions & Answers

Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
Stoney Reply
why we need to study biomolecules, molecular biology in nanotechnology?
Adin Reply
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
what school?
biomolecules are e building blocks of every organics and inorganic materials.
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
sciencedirect big data base
Introduction about quantum dots in nanotechnology
Praveena Reply
what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
do you think it's worthwhile in the long term to study the effects and possibilities of nanotechnology on viral treatment?
Damian Reply
absolutely yes
how to know photocatalytic properties of tio2 nanoparticles...what to do now
Akash Reply
it is a goid question and i want to know the answer as well
characteristics of micro business
for teaching engĺish at school how nano technology help us
Do somebody tell me a best nano engineering book for beginners?
s. Reply
there is no specific books for beginners but there is book called principle of nanotechnology
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
fullerene is a bucky ball aka Carbon 60 molecule. It was name by the architect Fuller. He design the geodesic dome. it resembles a soccer ball.
what is the actual application of fullerenes nowadays?
That is a great question Damian. best way to answer that question is to Google it. there are hundreds of applications for buck minister fullerenes, from medical to aerospace. you can also find plenty of research papers that will give you great detail on the potential applications of fullerenes.
what is the Synthesis, properties,and applications of carbon nano chemistry
Abhijith Reply
Mostly, they use nano carbon for electronics and for materials to be strengthened.
is Bucky paper clear?
carbon nanotubes has various application in fuel cells membrane, current research on cancer drug,and in electronics MEMS and NEMS etc
so some one know about replacing silicon atom with phosphorous in semiconductors device?
s. Reply
Yeah, it is a pain to say the least. You basically have to heat the substarte up to around 1000 degrees celcius then pass phosphene gas over top of it, which is explosive and toxic by the way, under very low pressure.
Do you know which machine is used to that process?
how to fabricate graphene ink ?
for screen printed electrodes ?
What is lattice structure?
s. Reply
of graphene you mean?
or in general
in general
Graphene has a hexagonal structure
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what is biological synthesis of nanoparticles
Sanket Reply
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Source:  OpenStax, Intro to computational engineering: elec 220 labs. OpenStax CNX. Mar 11, 2013 Download for free at http://cnx.org/content/col11405/1.2
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