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ben-wpan/atben/README-SMT
Werner Almesberger 2e5329039c include overview images in PCB and SMT fab packages
- 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
2011-03-23 01:57:55 -03:00

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Board characteristics:
- two layers, components only on front
- smallest components are 0402 and 0.5 mm pitch QFN
- the following orientation markings are on the silk screen:
B1: circle near pin 1
U1: triangle at the corner between pins 1 and 32
Design files:
atben-front.png Illustration of the PCB's front side (with silk screen)
atben-bom.csv Bill of materials
atben-pos.csv Automatic insertion file
* footprints
The PCB design files (Gerbers, etc.) are in a separate archive, atben-pcb-*
Interpretation of files:
- for all coordinates, the origin is the lower left corner of the board
- coordinates in atben-pos.csv are in inches
- rotation in atben-pos.csv is in degrees, counter-clockwise