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pcb

templetotemple
April 02, 2013
210

 pcb

templetotemple

April 02, 2013
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Transcript

  1. Libraries: www.sparkfun.com/tutorial/SparkFunEagle-04-13-10.zip
    ! ! ! http://gaussmarkov.net/wordpress/tools/software/eagle/eagle-2-libraries/
    Download Eagle
    Software: http://www.cadsoftusa.com/download-eagle/
    PCBs
    Printed Circuit Boards
    Monday, April 1, 2013

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  2. reasons people make PCBs
    • save money (if your board is faulty you’ll know it faster than if you sent it out to
    be made and a week later you’re out cash and time) COASTERS
    • learn more about electricity (close component placement/ perf boards)
    • once your circuit is down, it’s locked down (less sleepless nights for you finding
    the *one wire that was in the wrong place
    • learn your circuit
    • circuits are attractive and neat
    • next level (form and function/sparks ideas)
    • your friends will be impressed
    Monday, April 1, 2013

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  3. what are they?
    Red Carpet for the electrons
    no shorts
    copper pathways between components
    Monday, April 1, 2013

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  4. 1. Schematic
    2. Artwork
    3. Print
    4. Transfer
    5. Etch
    6. Drill/Populate/Solder * Antonius is the star here *
    THE STEPS
    software
    real life
    things you
    touch
    Monday, April 1, 2013

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  5. 1. SCHEMATIC
    Adding your schematic components in EAGLE
    command lines:
    add
    net
    del
    name/value
    Monday, April 1, 2013

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  6. switch to board
    Monday, April 1, 2013

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  7. 2. ARTWORK
    How the components will fit into 3D space
    Here it’s nice to print out your layout on regular paper, and
    “fake” populate the board
    command lines:
    route (width should be .04 - .016 for good traces)
    *make sure to use
    ripup (click trace you want to rip up)
    ripup * (rips up all traces)
    auto (auto routes -recommended only if you’re stuck)
    mov
    cntrl + click while in mov mode = rotation
    polygon
    name > click on polygon> *type GND>ENTER
    i (information)> isolate (drop down)> .016
    rats nest
    get close
    Monday, April 1, 2013

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  8. 3. PRINT
    Equipment:
    ITP supplies a
    special printer for
    printing on PCB
    paper. You can
    print several at a
    time for
    experimentation.
    Monday, April 1, 2013

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  9. equipment: (in wet lab)
    laminator
    printer
    4. TRANSFER
    supplies:
    scotch bright pad
    PCB paper ( can use magazine paper)
    copper PCB board
    tape
    scissors (cut your board and transfer to size)
    water
    paper towel
    Sharpie marker (for filing in traces/touch ups on transfer)
    steps:
    step 1: prepare the PCB board with ScotchBrite
    (in a circular motion scrub the copper until it is shiny) *no finger prints
    step 2: lay artwork print out face down onto prepared PCB board (you can use a tiny bit of tape to tag the
    layout onto the copper, but be sure to tape outside the parameter of the layout)
    step 3: run PCB board with printout (face to face) through the laminator 2-3 times
    =
    step 4: let the water do the work (if using the PCB blue paper, it will release on itʼs own/ if using magazine
    paper, you will gently rub the artwork from the copper)
    * here we can check the transfer and use a Sharpie pen to fill in any minor mistakes. Check your work before you put it in acid, you may have to do this
    process again if too many traces are broken or the transfer did not take.
    Monday, April 1, 2013

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  10. 5. ETCH
    PRINTING (Etching)
    supplies: (ITP Supplies these)
    funnel (discard of old acid) * bin in the shop
    empty container to size (for agitation and used acid)
    acid (mixed or at RadioShack)
    GLOVES!!!!
    If your transfer is OK, you can proceed to step 1 of the etching process.
    PREP: (microwave acid for 20-30 seconds before putting board in acid)
    step 1: acid bath agitation-- USE GLOVES!!
    step 2: use gloves.
    step 3: rinse (no touching)
    step 4: pat dry (the transfer is not quite set yet, if you are not gentle, the ink could rub off)
    step 5: scotch bright off black printed board to reveal copper.
    Monday, April 1, 2013

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  11. 6. DRILL/POPULATE/SOLDER
    supplies:
    tiny drill bits, vice (optional), dremel or drill press
    TO ORDER DRILL BITS: (youʼll break a few while youʼre learning)
    http://drillbitsunlimited.com/Default.aspx
    Monday, April 1, 2013

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  12. If you’re forgetful like me ...
    PCB & Eagle Tutorials
    http://www.youtube.com/watch?v=qG0O9LKH-_E
    Monday, April 1, 2013

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