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
2. what are they? think “inside out breadboard” think “my components aren’t going anywhere” Sunday, March 31, 2013
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 Sunday, March 31, 2013
4. Last thing’s first 1. Schematic 2. Artwork 3. Print 4. Transfer 5. Etch 6. Drill/Populate/Solder * Antonius is the star here * Sunday, March 31, 2013
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
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
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
8. 3. PRINT Sunday, March 31, 2013
9. 2. ARTWORK Sunday, March 31, 2013
10. 1. SCHEMATIC Sunday, March 31, 2013
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
12. If you’re forgetful like me ... PCB & Eagle Tutorials Sunday, March 31, 2013