PCB (Printed Circuit Board) fabrication etching lithography, transfer, print ferric/cupric chloride, ammonium/sodium persulfate citric acid, peroxide SDS water consumption waste machining machines tools 0.010 1/64 1/32 V-bits tapered bits contouring bits fixturing underlay orientation zeroing set-screws lifetime deburring cleaning climb vs conventional vinyl cutter flex connections encapsulation milling laser cutter printing conducting inks plating sewing PCB materials rigid FR4 (epoxy glass) FR1 (phenolic paper) garolite flex Kapton, Pyralux #1 epoxy film, #1126 copper tape high-frequency teflon glass copper 0.5 oz: 17.5 um 1.0 oz: 35 um 2.0 oz: 70 um board houses OSH Park, JLCPCB, Screaming Circuits, Macrofab, DKRed, Advanced, PCB:NG, Sierra, Eurocircuits, PCBWay, AQS, Gold Phoenix, 3PCB, Seeed, Think & Tinker PCB, kit, BOM design rules width/spacing (15, 5 mils) layers 1, 1.5, 2, 2+, 4, N mechanical, drill, solder mask, silk screen vias rivets, plated, blind, buried components through-hole surface-mount chip-scale breadboards assembly solder iron station fume extractor ROHS types lead-free wire paste SDS leaded wire paste SDS low-temp wire paste eutectic wetting manual, drag, wave cold solder joints flux core, paste, pen reflow hot air, hot plate, oven, IR magnifying stuffing component orientation tacking down parts bottom to top, inside to outside fumes washing desoldering braid tweezers vacuum hot air gravity cutting traces, adding jumpers pick-and-place encapsulation CAM formats Gerber/RS-274X png resolution FlatCAM pcb2gcodecam.pycad.pykokompefab modulesmods community edition video trace width traces interior 1/64" 0.010" fiber laser assignment group assignment: characterize the design rules for your in-house PCB production process extra credit: send a PCB out to a board house individual assignment: make an in-circuit programmer that includes a microcontroller: extra credit: customize the design mill and stuff the PCB test it to verify that it works extra credit: try other PCB processes
