Date:2011-03-24 16:18:14 (13 years 5 days ago)
Author:Werner Almesberger
Commit:38bea8ec54687eaa88e7f6375a58e2781edc2cc7
Message:README-SMT: various small clarifications

- 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
Files: atben/README-SMT (3 diffs)
atusb/README-SMT (3 diffs)

Change Details

atben/README-SMT
22
33- two layers, components only on front
44- smallest components are 0402 and 0.5 mm pitch QFN
5- the following orientation markings are on the silk screen:
5- the following component orientation markings are on the silk screen:
66  B1: circle near pin 1
77  U1: triangle at the corner between pins 1 and 32
88
...... 
1111
1212atben-front.png Illustration of the PCB's front side (with silk screen)
1313atben-bom.csv Bill of materials
14atben-pos.csv Automatic insertion file
15atben-footprints.pdf Footprint reference
14atben-pos.csv Automatic insertion file (front only)
15atben-footprints.pdf Footprint reference drawings
1616
1717The PCB design files (Gerbers, etc.) are in a separate archive, atben-pcb-*
1818
...... 
2222- for all coordinates, the origin is the lower left corner of the board
2323- coordinates in atben-pos.csv are in inches
2424- rotation in atben-pos.csv is in degrees, counter-clockwise
25- in the footprint reference, footprints are shown in the 0 degree
25- in the footprint reference drawings, footprints are shown in the 0 degree
2626  orientation and with their center at the crosshairs
atusb/README-SMT
33- two layers, components only on front
44- smallest components are 0402 and 0.5 mm pitch QFN
55- one through-hole component: USB connector CON1
6- the following orientation markings are on the silk screen:
6- the following componet orientation markings are on the silk screen:
77  B1: circle near pin 1
88  D1: plus sign at the anode
99  U1, U2: triangle at the corner between pins 1 and 32
...... 
1313
1414atusb-front.png Illustration of the PCB's front side (with silk screen)
1515atusb-bom.csv Bill of materials
16atusb-pos.csv Automatic insertion file
17atusb-footprints.pdf Footprint reference
16atusb-pos.csv Automatic insertion file (front only)
17atusb-footprints.pdf Footprint reference drawings
1818
1919The PCB design files (Gerbers, etc.) are in a separate archive, atusb-pcb-*
2020
...... 
2424- for all coordinates, the origin is the lower left corner of the board
2525- coordinates in atusb-pos.csv are in inches
2626- rotation in atusb-pos.csv is in degrees, counter-clockwise
27- in the footprint reference, footprints are shown in the 0 degree
27- in the footprint reference drawings, footprints are shown in the 0 degree
2828  orientation and with their center at the crosshairs

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