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2e5329039c
- atben/README-PCB, atusb/README-PCB: added overview images for PCB front and back - atben/README-SMT, atusb/README-SMT: added overview image for PCB front - atben/README-SMT, atusb/README-SMT: clarified that the Gerbers are in the PCB archive - makefiles/Makefile.kicad (PCB_FILES): moved list of gerbers to $(GERBERS) - makefiles/Makefile.kicad (gerber): generate Gerbers only if necessary - makefiles/Makefile.kicad (overview, uoverview, clean): renamed overview.png to $(NAME)-overview.png and turned phony target into file target - makefiles/Makefile.kicad ($(NAME)-front.png, $(NAME)-back.png, clean): added generation of front and back images
44 lines
1.3 KiB
Plaintext
44 lines
1.3 KiB
Plaintext
Board characteristics:
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- stacking: 2 layers, solder mask on front and back, silk screen on front
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- board material: FR4, thickness 0.8 mm (1/32"), 1 oz copper
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- surface finish: TBD, ENIG is preferred
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- via holes: diameter is nominally 10 mil, but any size <= 15 mil can be used
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- mechanical tolerances: <= +/- 0.1 mm on all sides
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Layer stacking, from top to bottom:
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atusb-SilkS_Front.gto Front silk screen
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atusb-Mask_Front.gts Front solder mask
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atusb-Front.gtl Front copper
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atusb-Back.gbl Back copper
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atusb-Mask_Back.gbs Back solder mask
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Other design files:
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atusb-front.png Illustration of the PCB's front side (without holes)
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atusb-back.png idem, for the back side
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atusb-PCB_Edges.gbr Board edges, for routing (Gerber)
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atusb.dxf idem (AutoCAD DXF)
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atusb.drl Excellon drill file
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Interpretation of files:
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- for all coordinates, the origin is the lower left corner of the board
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- do not print component values on silk screen
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- the center (!) of the board edge line marks the true board edge, e.g.,
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Edge line (5 mil)
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=======
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------- - - - - - ----------
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PCB outside | | PCB inside
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------- - - - - - ----------
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Volume removed when cutting
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(width depends on tool used)
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