mirror of
git://projects.qi-hardware.com/wernermisc.git
synced 2024-12-25 16:58:59 +02:00
33 lines
1.3 KiB
Plaintext
33 lines
1.3 KiB
Plaintext
xbrd - Expansion board design for M1r4 (and beyond)
|
|
===================================================
|
|
|
|
This is only a draft and may change quite a bit in the future.
|
|
|
|
Top view:
|
|
http://downloads.qi-hardware.com/people/werner/tmp/xbrd-top.pdf
|
|
|
|
The parameters are as follows:
|
|
|
|
Label Description Type Value
|
|
------- --------------------------------------- ------- -------
|
|
B Baseline between J21 and Jxx typ 45 mm
|
|
CB Clearance, back max 22 mm
|
|
CF Clearance, front max 10 mm
|
|
CL Clearance, left (seen from front) max 5 mm
|
|
CR Clearance, right (seen from front) max 15 mm
|
|
FB Baseline to front wall typ 15 mm
|
|
FW Front wall thickness typ 3 mm
|
|
HL Header length (long side) typ 900 mil
|
|
HW Header width (short side) typ 200 mil
|
|
|
|
In the drawing, all dimensions are in mm.
|
|
|
|
Typical dimensions would be things we decide in the design.
|
|
|
|
Maximum dimensions would be limits for the expansion board
|
|
designer (e.g., to avoid bumping into other components or
|
|
walls).
|
|
|
|
Unlabeled dimensions are calculated from the parameters and
|
|
have only an informational character.
|