mirror of
git://projects.qi-hardware.com/ben-wpan.git
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38bea8ec54
- atben/README-SMT, atusb/README-SMT: added "component to "orientation" - atben/README-SMT, atusb/README-SMT: added "drawings" to "footprint reference" - atben/README-SMT, atusb/README-SMT: mention once more that the automatic insertion file is for the front only
29 lines
983 B
Plaintext
29 lines
983 B
Plaintext
Board characteristics:
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- two layers, components only on front
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- smallest components are 0402 and 0.5 mm pitch QFN
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- one through-hole component: USB connector CON1
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- the following componet orientation markings are on the silk screen:
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B1: circle near pin 1
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D1: plus sign at the anode
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U1, U2: triangle at the corner between pins 1 and 32
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Design files:
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atusb-front.png Illustration of the PCB's front side (with silk screen)
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atusb-bom.csv Bill of materials
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atusb-pos.csv Automatic insertion file (front only)
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atusb-footprints.pdf Footprint reference drawings
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The PCB design files (Gerbers, etc.) are in a separate archive, atusb-pcb-*
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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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- coordinates in atusb-pos.csv are in inches
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- rotation in atusb-pos.csv is in degrees, counter-clockwise
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- in the footprint reference drawings, footprints are shown in the 0 degree
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orientation and with their center at the crosshairs
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