<< Chapter < Page Chapter >> Page >

2) attach the circuit components to the breadboard

Most of the breadboards should already have their components pre-inserted in the correct places by the labbies. This section is included for completeness and so you can double check their work if necessary.

The MSP430 launchpad goes in the middle right hand side of the board. Its upperleftmost pin goes in hole H47 , and the chip sits across both halves of the breadboard. Once it's in, put in the 4 toggle dip switch across the channel above the Launchpad. The switch's top leftmost pin goes into hole E52.

The msp430 and dip toggle switches

Connecting the switch to GPIO pins 0-3

Now insert the decoder IC (the 16 pin chip MC14511BCP) into the board. The top leftmost pin goes into hole E21 across the lower breadboard channel.

Then put the 7-segment display across the same channel, with its top leftmost pin in hole C36 .

Take one of your resistor arrays (the long black sticks with a rubberized coating) and place it with the leftmost pin in hole B28 , connecting it to the top right pin of the decoder by doing so.

Lastly, put the other resistor array with its leftmost pin in hole I21 of the upper half of the breadboard.

Main display components

The components are close together to prevent long wire runs and simplify the connections between them (taking advantage of the breadboard connections whenever possible).

3) wire your power busses together

To give some additional flexibility, the breadboard busses aren't automatically connected together. In our applications, we will want to run all circuits off of the same power used by the MSP430 itself, so we need to tie all the different bus sections together.

Using the orange wires in the wiring kit, connect each half of all the horizontal bus strips . The wide gaps in the middle of the strips indicate that there is a gap we need to bridge with an external jumper wire.

Lengthwise bus connections

Notice how the orange and red wires in your kits are sized to exactly bridge the respective gaps in the breadboard.

Since the lab setup only needs one power level, for convenience tie all the power busses together. This will allow shorter runs from the chips to whichever bus is closest. Using the red wires, connect all three red and all three blue busses together . Put the connections off to the far left hand side of the board out of the way of your main circuit.

Vertical bus connections

Notice how the orange and red wires in your kits are sized to exactly bridge the respective gaps in the breadboard.

Bus wiring overall

Check your work once you are done-- now there should be one continuous connection between all of the red busses and a separate one between all of the blue busses.

4) connect power to busses

We already wired the busses together, but now we need to connect the +3.3v and GND provided by the MSP430 Launchpad's USB connection and voltage regulators. Connect the blue bus strip to GND (lower F-J column 56) using a green wire and the red bus strip to Vcc (upper F-J column 56) using a blue wire. You will need to use a small orange jumper to cross the upper channel as shown in the picture below.

Questions & Answers

can someone help me with some logarithmic and exponential equations.
Jeffrey Reply
sure. what is your question?
okay, so you have 6 raised to the power of 2. what is that part of your answer
I don't understand what the A with approx sign and the boxed x mean
it think it's written 20/(X-6)^2 so it's 20 divided by X-6 squared
I'm not sure why it wrote it the other way
I got X =-6
ok. so take the square root of both sides, now you have plus or minus the square root of 20= x-6
oops. ignore that.
so you not have an equal sign anywhere in the original equation?
Commplementary angles
Idrissa Reply
im all ears I need to learn
right! what he said ⤴⤴⤴
what is a good calculator for all algebra; would a Casio fx 260 work with all algebra equations? please name the cheapest, thanks.
Kevin Reply
a perfect square v²+2v+_
Dearan Reply
kkk nice
Abdirahman Reply
algebra 2 Inequalities:If equation 2 = 0 it is an open set?
Kim Reply
or infinite solutions?
The answer is neither. The function, 2 = 0 cannot exist. Hence, the function is undefined.
Embra Reply
if |A| not equal to 0 and order of A is n prove that adj (adj A = |A|
Nancy Reply
rolling four fair dice and getting an even number an all four dice
ramon Reply
Kristine 2*2*2=8
Bridget Reply
Differences Between Laspeyres and Paasche Indices
Emedobi Reply
No. 7x -4y is simplified from 4x + (3y + 3x) -7y
Mary Reply
is it 3×y ?
Joan Reply
J, combine like terms 7x-4y
Bridget Reply
im not good at math so would this help me
Rachael Reply
I'm not good at math so would you help me
what is the problem that i will help you to self with?
how do you translate this in Algebraic Expressions
linda Reply
Need to simplify the expresin. 3/7 (x+y)-1/7 (x-1)=
Crystal Reply
. After 3 months on a diet, Lisa had lost 12% of her original weight. She lost 21 pounds. What was Lisa's original weight?
Chris Reply
what's the easiest and fastest way to the synthesize AgNP?
Damian Reply
types of nano material
abeetha Reply
I start with an easy one. carbon nanotubes woven into a long filament like a string
many many of nanotubes
what is the k.e before it land
what is the function of carbon nanotubes?
what is nanomaterials​ and their applications of sensors.
Ramkumar Reply
what is nano technology
Sravani Reply
what is system testing?
preparation of nanomaterial
Victor Reply
Yes, Nanotechnology has a very fast field of applications and their is always something new to do with it...
Himanshu Reply
good afternoon madam
what is system testing
what is the application of nanotechnology?
In this morden time nanotechnology used in many field . 1-Electronics-manufacturad IC ,RAM,MRAM,solar panel etc 2-Helth and Medical-Nanomedicine,Drug Dilivery for cancer treatment etc 3- Atomobile -MEMS, Coating on car etc. and may other field for details you can check at Google
anybody can imagine what will be happen after 100 years from now in nano tech world
after 100 year this will be not nanotechnology maybe this technology name will be change . maybe aftet 100 year . we work on electron lable practically about its properties and behaviour by the different instruments
name doesn't matter , whatever it will be change... I'm taking about effect on circumstances of the microscopic world
how hard could it be to apply nanotechnology against viral infections such HIV or Ebola?
silver nanoparticles could handle the job?
not now but maybe in future only AgNP maybe any other nanomaterials
can nanotechnology change the direction of the face of the world
Prasenjit Reply
At high concentrations (>0.01 M), the relation between absorptivity coefficient and absorbance is no longer linear. This is due to the electrostatic interactions between the quantum dots in close proximity. If the concentration of the solution is high, another effect that is seen is the scattering of light from the large number of quantum dots. This assumption only works at low concentrations of the analyte. Presence of stray light.
Ali Reply
the Beer law works very well for dilute solutions but fails for very high concentrations. why?
bamidele Reply
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
Privacy Information Security Software Version 1.1a
Got questions? Join the online conversation and get instant answers!
QuizOver.com Reply

Get the best Algebra and trigonometry course in your pocket!

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
Google Play and the Google Play logo are trademarks of Google Inc.

Notification Switch

Would you like to follow the 'Intro to computational engineering: elec 220 labs' conversation and receive update notifications?