Basic Electronics at CCA, Fall 2012

Week 1 Tuesday, September 4

Syllabus

Lecture

  • Algebra review
  • Basic circuit theory

Lab

  • Solderless breadboard
  • Resistors in series and parallel
  • Measuring resistance

Homework 1 due week 2 Tuesday, September 11

  • Join the class mailing list at https://groups.google.com/d/forum/cca-basic-electronics
  • Introduce yourself on the class mailing list. Tell us what you are interested in getting out of this class, and if you have any particular projects or applications in mind.
  • Purchase the required textbook: There Are No Electrons: Electronics for Earthlings (Clearwater Publishing) by Kenn Amdahl
    ISBN-10: 0962781592
    ISBN-13: 978-0962781599
  • Read in the book from the very beginning (About This Book) through page 33
  • Do either the even or odd exercises of these Basic Math Exercises

Week 2 Tuesday, September 11

Lab

  • 9v battery and battery clips
  • Resistors and voltage drops
  • Current calculations
  • LED and current limiting resistor

Lecture

  • KVL
  • Current limiting resistors
    • Depends on knowing the voltage

Homework 2 due week 3 Tuesday, September 18

  • Announcement: There is no class on 9/25. A makeup class will be scheduled during the project preparation time
  • Read from page 34 to magnetism on page 41 in There Are No Electronics
  • Read tutorials 1-4 of Electronic Tutorials about DC Theory
  • Read Chapters 1-6 in Volume 1: DC of Basic Concepts of Electricity in All About Circuits, a free online text book
  • Research and explain in your own words the resistor color code
  • Do exercises 65, 66, 67, and 73 of Basic Electronic Exercises
Week 3 Tuesday, September 18
Lecture
  • Review: KVL, KCL, series, parallel, Ohm’s law
  • Power
  • Capacitors
  • ICs
Lab:
  • 555 blinking LED

Homework 3 due week 5 Tuesday, October 2

  • Reminder: There is no class on 9/25. A makeup class will be scheduled during the project preparation time
  • Read from magnetism on page 41 through page 50 in There Are No Electronics
  • Read chapters 7 in Volume 1: DC of Basic Concepts of Electricity
  • Do exercises 4 and 11-13 of Basic Electronic Exercises
Week 4 Tuesday, September 25
  • No class
Week 5 Tuesday, October 2
  • Homework feedback
    • Do it!
    • Less than 90% is very bad
    • math pretty bad, especially how to handle exponent in denominator
    • units
    • Work in groups and help each other
    • Series vs. Parallel resistors (or any circuits)
    • Please staple and organize and write neatly or I will start taking points off !!!
  • Hand in homework
Lecture
  • Review: KVL, KCL, series, parallel, Ohm’s law
  • Sensors: LDR
Lab
  • Photoresistor and fixed resistor (voltage divider)
  • Measuring voltage with multimeter

Homework 4 due week 6 Tuesday, October 9

Review the homework feedback from class today. Please don’t make the same mistakes. Allow yourself ample time for the homework, and consider working in groups.

  1. All the homework that was due today PLUS:
  2. Do exercises 68, 69, and 70 of Basic Electronic Exercises
  3. Find another website that discusses basic electronics. Read it. Provide the URL, and explain why you liked or didn’t like this website
  4. Explain, in your own words, our 4 basic principles: voltage, current, series components which have the same current, parallel components which have the same voltage. Be creative: you may draw diagrams or pictures, create an art project, write analogies, or bake cookies to illustrate your point.

Week 5 Tuesday, October 9
Administration

  • Did some of you do the resistor color code the second week and I marked you off on last homework?
  • Great that some of you are working in groups

Lecture

  • Power
  • Capacitors
  • Voltage Dividers
  • Potentiometer

Lab

  • How to turn on a light when the light falls below a threshold
    • LM339 (or rather socket for now)
    • 100K Ohm pot to set threshold
    • Power and ground
  • Soldernext week

Homework 5 due week 7 Tuesday, October 16

  1. Read from The Magician on page 62 to Belinda on page 103 in There Are No Electronics
  2. Do exercises 5, 8, 9, 10, 40, and 41 of Basic Electronic Exercises

Week 7 Tuesday, October 16

    • Administration
      • Midterm grade will be homework up to now
      • Each of you must make an appointment to see me this week or next week to discuss your progress, lab work, homework, and understanding
    • Review
      • Voltage Divider
      • Voltage differential between two points (two nodes)
    • Lecture
      • Photoresistor
    • Lab
      • Voltage dividers on solderless breadboard
      • LED + 330R resistor to comparator

Homework 6 due week 8 Tuesday, October 23

  1. Read Chapters 6 and 7 in Volume 1: DC of Basic Concepts of Electricity in All About Circuits, a free online text book
  2. Do exercises 41 and 24 of Basic Electronic Exercises
  3. Derive the equation for a voltage divider
  4. Do all your missing and incorrect homework in preparation for your midterm review appointment with me
  5. Make your appointment with me. IT IS YOUR RESPONSIBILITY TO ARRANGE A TIME WITH ME. FAILURE TO MEET WILL RESULT IN A FAILING MIDTERM GRADE.

Week 8 Tuesday, October 23

Admin

  • Withdrawal deadline is  Friday, November 9th. The students wishing to Withdraw need to come in to the Student Records Office to process their Withdrawal forms.
  • Failing grade for midterm if you don’t make appointment or fail to prepare

Lecture and demo

  • Building blocks
    • Photoresistor/resistor voltage divider
    • Comparator
    • Hysteresis
  • 555 blinker
    • SR Flip Flop
  • Other building blocks
    • Other sensors
      • Sound
      • What else can you think of?
    • Other logic
      • Gates
      • Shift registers
      • Inverter
      • What else can you think of?
    • Other actuators
      • Motors
      • Speakers
      • Solenoids (valves, clutches)
      • What else can you think of?
    • Other controllers
      • Transistors to control high current
      • H-bridges
      • Relays
      • What else can you think of?
  • Combine to make projects
    • Door opens when you walk past one sensor, closes after another
    • Film projector speeds up as you approach
    • Balloon inflates the louder the noise
  • What else can you think of?

Lab

  • Finish photoresistor switch
  • Add transistor to turn motor on/off
  • Use it to turn oscillator on/off (time permitting)

Homework due Week 9 Tuesday, October 30

  • Research Open Collector outputs and explain in your own words why they are useful
  • Sketch out two project ideas that you do not want to build
  • Sketch out one project you might want to build

Week 9 Tuesday, October 30

Admin

  • Withdrawal deadline is  Friday, November 9th. The students wishing to Withdraw need to come in to the Student Records Office to process their Withdrawal forms.
  • Failing grade for midterm if you don’t make appointment or fail to prepare.
  • Where do you all stand relative to midterm review?
  • Which of you completed the comparator circuit?

Lecture

Lab

Homework due Week 10 Tuesday, November 6

The goal of this week’s homework is to develop your project further, so that next week you can start working on it:

  1. Chose one project that you will build. It can be one of the three you handed in last week, or a new, different project. Do not pick a project that requires exotic or expensive components; we simply don’t have the time to sample and evaluate anything unusual and still have time to build a project. Use the internet, library, books, and talk to people such as Andrew, myself, etc. Websites such as: instructables, make, and arduino (even if you are not using Arduino) have many projects which you might like to build or which might suggest other projects.
  2. Think about what functional blocks you need in order to accomplish your project. These functional blocks can include electronics, mechanical components, or conceptual pieces that you haven’t quite figured out. Think about the blocks we have discussed in class, and research others
  3. Draw the block diagram. Don’t worry about it being perfect or that you can build them; the important thing is to make progress and to think about what identifiable functions your project requires.
  4. Identify the high risk blocks. These are areas that might be unfamiliar to you or that simply seem risky. Since you are a beginner, it all might seem high risky at first, but some blocks might seem riskier than others. Identify these, as we will focus on these first, to reduce the risk of the project.
  5. Plan the next few action items. These might questions to ask me or to research; circuits to prototype; parts to order; or simply things to try.
  6. Write this all up and hand it in

Week 10 Tuesday, November 6

Lecture

  • Projects
    • Itemize building blocks
    • High risk areas
    • Next step
    • Resources: hybrid lab, mailing lists, other places e.g. arduino club
  • Review of transistors as switches
  • Exercise: Given lm339 light sensor and transistor motor control, how might you build a light seeking robot?
  • Unconnected inputs, pull-ups and pull-downs
  • Open Collector outputs

Lab

  • 12N10L as switch with no pulldown
  • Add pulldown

Week 11 Tuesday, November 13

Projects

  • holiday
  • treasure island
  • check-in
  • plan for today
  • summary
  • plan for next week

Week 12 Tuesday, November 20
Week 13 Tuesday, November 27

Week 14 Tuesday, December 4

  • Course evaluation
  • When next Friday
  • Projects

Week 15 Tuesday, December 11

  • Who has completed your course evaluation
  • Show is Friday, not Saturday
  • Who will present today, who will present at show?
  • Friday: I’ll bring everything to Oakland at 3PM and will be there until the show starts at 7PM to help you


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