PCB (Printed Circuit Board) fabrication
etching
lithography, transfer, print
ferric/cupric chloride, ammonium/sodium persulfate
citric acid, peroxide
SDS
water consumption
waste
machining
machines MTM
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, PCBWay,
Screaming Circuits, Macrofab, DKRed,
Advanced, PCB:NG, Sierra, Eurocircuits,
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
wires, rivets, plated, blind, buried
components
through-hole
surface-mount
chip-scale
breadboards
assembly
solder
iron station fume extractor burns
ROHS
types
lead-free wire paste SDS
leaded wire paste SDS
low-temp wire paste
eutectic
tinning
wetting
manual, drag, wave
cold solder joints, checking 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 pcb2gcode
cam.py cad.py kokompe fab modules mods community edition
video
trace width
traces traces+exterior 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 and test the development board that you designed
to interact and communicate with an embedded microcontroller
extra credit: make it with another process