1 ENGG 1203 Tutorial Introduction to Electrical and Electronic
Engineering 2013 Spring Semester Time and Venue Class: 1430 1520
CPD-LG.08, every Friday Tutor Leon LEI (me): CB 806 Michael CHAN:
CB 515 Contact TAs and me via Piazza Tutorial materials
http://www.eee.hku.hk/~culei/ENGG1203.html
http://www.eee.hku.hk/~culei/ENGG1203.html
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Tutorial Schedule (Tentative) 1/25 Introduction+System 2/1
Digital Logic 2/8 Digital Logic 2/15 Lunar New Year 2/22 Digital
Logic 3/1 Circuit 3/8 Circuit 3/15 Reading Week 3/22 ** Mid Term **
3/29 Good Friday 4/5 Signal 4/12 Signal 4/19 Signal 4/26 N/A 5/3
N/A 5/X Computer+Revision 2
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3 ENGG 1203 Tutorial Each class: 40 min. tutorial + 10 min. Q/A
Tutorial materials Regular tutorials Project facilitation tutorial
after lab sessions Revision tutorial before examination
(Tentatively) Question banks (* : may be obsolete) Homework 2012,
2011*, 2010* Past paper 2012, 2011*, 2010*
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ENGG 1203 Admin Q&A Lecture/Lab materials, announcements
Course site http://www.eee.hku.hk/~engg1203/sp13/index.html
http://www.eee.hku.hk/~engg1203/sp13/index.html Moodle HKU Computer
Center http://www.its.hku.hk/lms/moodle/v2/support_student.php
http://www.its.hku.hk/lms/moodle/v2/support_student.php Prompt
helping, finding groupmates, asking lecture/tutorial/homework
questions Piazza https://piazza.com/#spring2013/engg1203
https://piazza.com/#spring2013/engg1203 Admin help Piazza (Private
post) Extra lab check-off session TA office hour (CB LG205) Thu
1530 1730, Fri 1530 1730 (Tentative) Textbook No textbook 4
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5 ENGG 1203 Tutorial ENGG1203 and Systems 25 Jan Learning
Objectives Outline the course, the tutorial and the project
Identify concepts of systems News Start to have laboratory sessions
next week Sign up by tonight (25 Jan)
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IPhone 4S ENGG1203 / Project Too broad and no focus for
lectures/tutorials No connection between topics Too many topics are
covered In this course, we teach Digital circuit Analog circuit
Signal and Control Digital system
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IPhone 4S EEE 8 megapixel camera Linear oscillating vibrator
Battery Light sensor and IR LED for the proximity sensor 960 x 640
pixel Retina display
IPhone 4S ENGG1203 Sensors, Actuators Measure and manipulate
the physical environment Computer Systems Compute, control and
decide Digital Logic Assemble a computer system Electrical Circuit
Assemble digital logic, convert signals
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IPhone 4S Rube Goldberg Machine Vibration/Motion Light sensor
and proximity sensor IPhone 4S = Rube Goldberg Machine? Control
circuit (microcontroller)
Slide 11
Topics in ENGG1203 Topics are linked together We learn some
modules first Learn more (but not all) in EEE UG
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Electrical Safety 5-10 ma can cause death Skin resistance can
range from 1k for wet skin to 500k for dry skin. Death can result
from as low as 50 volts Body can sense 9 volts under the right
conditions NO Slippers and NO Sandals in the Lab Report TAs or
technicians for any emergency case
Slide 13
Electrical Units * Voltage (V): volts (v kv) * Current (I):
amperes (amps), milliampere (ma 10 -3 ) * Resistance (R): ohms ,
k-ohms (k 10 3 ), meg ohms (m 10 6 ) Capacitance (C): farad,
microfarad (f 10 -6 ), nanofarad (nf 10 -9 ), picofarad (pf 10 -12
) Inductance (H): henry, millihenry, microhenry Frequency (freq.):
Hertz, MHz, GHz 10 9
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Digital Multi-meter (DMM) Important diagnosis tool Voltage DC:
2mv-1000v 24m, 240m, 2.4, 24, 240 Voltage AC: 2vac-750vac Current:
2ua-10a Resistance: 2-2M Turn off the DMM if you are not using
Slide 15
Electrical Symbols
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Resistor V = IR Resistor parameters: resistance and tolerance
Resistors are color coded Common tolerance: 5%, 1% Variable
resistors: pots
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Resistor Color Code (Optional) To distinguish left from right
there is a gap between the C and D bands. band A is first
significant figure of component value (left side) band B is the
second significant figure band C is the decimal multiplier band D
if present, indicates tolerance of value in percent (no color means
20%)
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Resistor Color Code (Optional)
Slide 19
A resistor with bands of yellow, violet, red, and gold First
digit 4 (yellow), second digit 7 (violet), followed by 2 (red)
zeros: 4,700 ohms. Gold signifies that the tolerance is 5% The real
resistance could lie anywhere between 4,465 and 4,935 ohms
Slide 20
Power Requirements Power (voltage) supplies that used in analog
and digital circuits +3.3v, +5v for digital circuits +15v, -15v for
analog circuits -5v, +12v, -12v are also used In this course 0v,
+3.3v for digital circuits -15v, +15v, for analog circuits
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Project Videos FA12
http://youtu.be/oDss2gXJEyQhttp://youtu.be/oDss2gXJEyQ FA11
http://youtu.be/n5JhVXeYZyIhttp://youtu.be/n5JhVXeYZyI More videos
in the course FB page https://www.facebook.com/ENGG1015FA12 (FA12)
and https://www.facebook.com/pages/ENGG1015- FA11/256345307719029
(FA11) https://www.facebook.com/ENGG1015FA12
https://www.facebook.com/pages/ENGG1015- FA11/256345307719029
Extra: LEGO Great Ball Contraption http://youtu.be/sUtS52lqL5w
http://youtu.be/sUtS52lqL5w 21
Lab Check-off Extra TA office hours for lab check-off Thu 1530
1730 Fri 1530 1730 To speed up lab check-off process Read the
instruction sheet before lab session Log in the lab check-off
system before calling TAs If you have multiple check-off, log in
different HKU Portal accounts via different internet browsers (IE,
Firefox, Chrome, 360, Sogou, Liebao, Maxthon) 23
Slide 24
Probing Questions Big questions How to design an (complicated)
electrical system? How do you (as a team) build a multi-stage Rube
Goldberg Machine that is functional and creative? Small questions
How do you describe the stages that are involved in the machine?
How do you describe the electrical components in the machine? How
do you demonstrate your skills of technical design and
implementation? How do you demonstrate your ability to work
effectively with diverse teams? How do you demonstrate your
originality and inventiveness? 24
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Systems that You Will Build in Lab Sessions 25 Ball tracker Lab
1 Lab 4 The tunnel increments its internal counter every time a
ball rolls through the tunnel. When three balls have rolled through
the tunnel, it raises a digital DONE signal.
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Systems that You Will Build in Lab Sessions Light tracking
(Tentative) Lab 6 Lab 8 The head can follow the direction of a
light source 26
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Sensors and Actuators in the Project 27
Slide 28
Learning Objectives in the Project After taking this course,
you can Describe stages that are involved in a basic system
Identify electrical components and instruments Demonstrate
technical design and implementation skills of a basic electronic
system Construct circuits with sensors, actuators and
microcontrollers Identify, formulate and solve basic engineering
problems Design and conduct technical experiments, as well as
analyze and interpret the obtained data Work effectively with
diverse teams 28
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Project Checklist Checklist: Collaboration, Creativity, Problem
Solving, Project Planning, Project Implementation Students can
identify goals, design strategies and schedules to meet goals, and
define group criteria in the design process You can also monitor
how general engineering skills and thinking can be applied in the
design process. 29
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Question: Top-down vs Bottom-up ItemTop-downBottom-up Driven by
system requirement Driven by component integration Construct system
by composing smaller parts Construct system by decomposing Generate
new ideas from system requirements Synthesize new ideas from
existing components Must work with unknown system components as
black-boxes 30 Yes
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Question: Procedures in top-down and bottom-up Making a dinner
(Top-down) Decide the types of dishes according to the location,
number of people, time and purpose of dinner Design dishes
according to the types of dishes, diet requirements, kitchen
equipment Find out required ingredients and sauces for each decided
dishes Get all things ready (e.g. buy and clean ingredients,
prepare sauces) Cook every dishes Bring dishes to the table 31
Slide 32
Question: Procedures in top-down and bottom-up Making a dinner
(Bottom-up) Find out the ingredients available Clean and cut the
ingredients according to your own skill and available kitchen
equipment Mix and match available ingredients as different dishes
to meet the dinner requirements, such as dietary requirements,
location, number of people, time and purpose of dinner, etc. Cook
every dishes by the given kitchen equipment Bring dishes to the
table Making a Rube Goldberg Machine? 32
Slide 33
Question: Procedures in top-down and bottom-up Making a Rube
Goldberg Machine (Top-down) Decide the types of stages according to
the location, number of stages, and interface of each stage Design
stages according to the types of stages, input and output
requirements Find out the required components for each stage Get
all things ready (e.g. acquire from the technician) Prepare and
assemble each stage Combine each stage together Fine-tune the
connection between stages 33
Slide 34
Question: Procedures in top-down and bottom-up Making a Rube
Goldberg Machine (Bottom-up) Find out the components available Mix
and match available components as different stages to meet the
project requirements such as types of stages according to the
location, number of stages, and interface of each stage etc.
Prepare and assemble each stage by the given equipment Combine each
stage together Fine-tune the connection between stages 34
Slide 35
(Appendix) What is a Rube Goldberg Machine (in this course)?
General: Rube Goldberg Machine can be defined as a machine designed
to perform a very simple task in an overly complex way or a
comically involved, complicated invention, laboriously contrived to
perform a simple operation. Technical: Rube Goldberg Machine can be
defined as an intuitive and loosely defined engineering system. In
particular, the Rube Goldberg Machine is a machine that has at
least four distinct stages with its own triggering mechanisms. In
addition, the machine is started with pushing a button/switch, and
is ended by popping a balloon. In a stage, an electrical sensor is
triggered by an external mechanical input, the sensor then switches
on the electrical actuator(s) through relay buffers. Electrical
actuator then moves mechanical parts, which finally trigger the
electrical sensor in the next stage. 35
Slide 36
(Appendix) What is a Rube Goldberg Machine (in this course)?
Pedagogical: Rube Goldberg Machine design project can be used to
trigger and maintain students motivations in learning because of
its innovative, humorous and unconventional nature. Furthermore,
Rube Goldberg Machines are usually constituted of daily life
objects, and thus the design project creates a friendly environment
that encourages intellectual engagement of students. Moreover, the
Rube Goldberg Machine project contributes to two primary learning
events: i) to gain students attention, and ii) to stimulate
students recall of prior learning. According to Gagnes
instructional theory, for learning to take place (i.e. learning to
design their machines efficiently), primary learning events must be
accomplished first. 36
