mirror of
git://projects.qi-hardware.com/ben-wpan.git
synced 2024-11-26 12:45:21 +02:00
507e6c33de
- makefiles/Makefile.kicad: added generation of a footprint reference - atben/README-SMT, atusb/README-SMT: added footprint reference, with explanation
29 lines
943 B
Plaintext
29 lines
943 B
Plaintext
Board characteristics:
|
|
|
|
- two layers, components only on front
|
|
- smallest components are 0402 and 0.5 mm pitch QFN
|
|
- one through-hole component: USB connector CON1
|
|
- the following orientation markings are on the silk screen:
|
|
B1: circle near pin 1
|
|
D1: plus sign at the anode
|
|
U1, U2: triangle at the corner between pins 1 and 32
|
|
|
|
|
|
Design files:
|
|
|
|
atusb-front.png Illustration of the PCB's front side (with silk screen)
|
|
atusb-bom.csv Bill of materials
|
|
atusb-pos.csv Automatic insertion file
|
|
atusb-footprints.pdf Footprint reference
|
|
|
|
The PCB design files (Gerbers, etc.) are in a separate archive, atusb-pcb-*
|
|
|
|
|
|
Interpretation of files:
|
|
|
|
- for all coordinates, the origin is the lower left corner of the board
|
|
- coordinates in atusb-pos.csv are in inches
|
|
- rotation in atusb-pos.csv is in degrees, counter-clockwise
|
|
- in the footprint reference, footprints are shown in the 0 degree
|
|
orientation and with their center at the crosshairs
|