pcb

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
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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
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5. 1. SCHEMATIC
   Adding your schematic components in EAGLE
   command lines:
   add
   net
   del
   name/value
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6. switch to board
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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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