Secondary Education
University Engineering
Greg Burnham
Stephanie Foster
Estacado High School
Richard Gale
Texas Tech
What Gap?
Typically find standards based testing in high
school
Multiple choice
Fixed format
A ‘right’ answer and some wrong ones
Most university engineering is open-ended
Lots of ways to succeed
Managing constraints is important
‘optimum’ rather than ‘right’
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Curriculum Alignment
State of Texas TEKS generally
STARR geared toward application of skills
Science – Most Science TEKS 2 and 3
application, real world technology,
measurement, interpretation plus content
Math – Underlying process, problem solving in
everyday process, mathematic representations
and models, transformations of sine and cosine
functions
Cscope and specific curriculum contain
application of real world technology in their
specificity
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Robotics
Must figure out how to apply theory
Which theory?
What level of rigor?
Always have constraints
Time
Money
People
Availability of material
Team organization
Appreciation for diversity
Logistics
Standards
Problem solving behaviors
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What are we doing today?
Issues with building a robot in our workshop
Programming is both overrated and
underappreciated
Electronics requires ‘specialists’
NOT
You can take this stuff home with you
Extremely useful in all robotics programs
You can apply it to a wide range of problem
solving exercises – www.ni.com – will lead you to
a wealth of chat rooms, bulletin boards, tutorials,
educational resources
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Agenda
We will forego loading the sw (20-30
minutes) but here’s how you do it
Plug and play – pulls up a panel of
instruments immediately
DMM – adventures with Ohm’s Law
General audio analysis with Elvis –
electronics laboratory virtual
instrumentation system
Programming in LabVIEW – input,
manipulation, analysis, output of
complex electrical signals
Take home – MyDAQ, software, solar
cell, LabVIEW for Education
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Adventures in Ohm’s Law
Ohm’s Law V = IR
Applications for physics classroom
Bread board circuit –
9V battery and clip with leads, resistors and
jumpers
DMM – voltage probes
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DMM Ports
Red to HI on V Ω side and black to COM
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Adventures in Ohm’s Law
Select Ohm’s on DMM front panel
Press run arrow
Measure the resistance of three
resistors and record your values
Calculate the total resistance of the three in
series
Rtotal = R1 + R2 + R3
Calculate the total resistance of the three in
parallel
1/Rtotal = 1/R1 + 1/R2 + 1/R3
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Adventures in Ohm’s Law
Draw a series circuit and assemble it in
the bread board and check
A possible series circuit (red and black
out to battery clip
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Adventures in Ohm’s Law
Draw a parallel circuit and assemble it in
the bread board and check
Possible parallel circuit on the bread
board
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MyDAQ Input/Output Ports
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Audio Analysis with Elvis
Oscilloscope to graph the voltage of
music
Go to my music and pick something to play
be sure it is on repeat or looped
Pull up the NI Elvis, click scope
plug in audio cord into headphones in
computer and audio in on myDAQ
Give the scope the following constraints.
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Audio Analysis with Elvis
Oscilloscope to graph the voltage of
music
Click RUN
Graphs the
frequencies of music
played
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Piezo MyDAQ
MyDAQ wired with
a Piezo Transistor
Light green AO0
Yellow AO A
ground
Orange AO+ Dark
green AO-
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Audio Analysis with Elvis
Using function generator and Piezo to play an
octave and scope to graph
Start Frequency
1024
Stop Frequency
2048
Click Sweep
This is 2 octaves
above middle C
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Audio Analysis with Elvis
Click Scope to bring up a graph of the scale
This is a simple way to
generate a sine wave and
shows that amplitude
is sound volume and
frequency is pitch
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Audio Analysis with Elvis
Oscilloscope and Function Gen together
Goal is to show an amplitude change on the
oscilloscope
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Audio Analysis with Elvis
Oscilloscope and Function Gen together
Goal is to show an amplitude change on the
oscilloscope
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Audio Analysis with Elvis
Oscilloscope and Function Gen together
When changing the trigger or the start point
Shows the relationship between frequency
and period
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Audio Analysis with Elvis
Oscilloscope and Function Gen together
When changing the trigger or the start point,
changing the period to 500 us
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A Little More General
Each of the instruments we used so far are
programs created in a language called
LabVIEW
Virtual Instruments
Highly visual – drag and drop
Customized for a particular application
The hardware allows for the user to create his or
her own
Limitations of off the shelf VI’s
They’re always doing what someone else wanted
They’re really good but not exactly right for you
Build your own
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Who, me?
Relax
Tons of open source applications
Multiple chat rooms and user groups
Built in tools
The challenge
Find something pretty close to what you want
Dig into it far enough to figure out how it works
Modify it to your application
You can do this
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Get started here
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Get started here
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