PCB presentation

Session 9

Transcript

1. Libraries: http://www.opencircuits.com/SFE_Footprint_Library_Eagle
   ! ! ! http://gaussmarkov.net/wordpress/tools/software/eagle/eagle-2-libraries/
   Download Eagle
   Software: http://www.cadsoft.de/downloads/login
   PCBs
   Printed Circuit Boards
   Sunday, March 31, 2013
   

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2. what are they?
   think “inside out breadboard”
   think “my components aren’t going anywhere”
   Sunday, March 31, 2013
   

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3. reasons why making your own
   PCBs is a good idea
   • 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)
   • learn more about electricity (component placement)
   • learn your circuit
   • once your circuit is down, it’s locked down (less sleepless nights for you finding
   the *one wire that was in the wrong place
   • circuits are attractive and neat
   • next level (form and function)
   • your friends will be impressed
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4. Last thing’s first
   1. Schematic
   2. Artwork
   3. Print
   4. Transfer
   5. Etch
   6. Drill/Populate/Solder * Antonius is the star here *
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5. 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
   Sunday, March 31, 2013
   

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6. 5. ETCH
   PRINTING (Etching)
   supplies: (ITP Supplies these)
   funnel
   empty container to size (for agitation and used acid and )
   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) *
   insert time/temperature chart here)
   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.
   Sunday, March 31, 2013
   

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7. 4. TRANSFER
   T is for “can be tricky”
   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)
   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 5: 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)
   equipment: (in wet lab)
   laminator
   printer
   Sunday, March 31, 2013
   

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8. 3. PRINT
   Sunday, March 31, 2013
   

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9. 2. ARTWORK
   Sunday, March 31, 2013
   

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10. 1. SCHEMATIC
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11. Common Eagle Commands
    • add
    • del
    • net -- very important to actually connect
    components
    • mov
    • route
    • ripup (*)
    • i (information)
    • isolation (to prevent shorts)
    Sunday, March 31, 2013
    

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12. If you’re forgetful like me ...
    PCB & Eagle Tutorials
    Sunday, March 31, 2013
    

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