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

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

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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