Werner's Miscellanea

Werner's Miscellanea Git Source Tree

1	xbrd - Expansion board design for M1r4 (and beyond)
2	===================================================
3
4	This is only a draft and may change quite a bit in the future.
5
6	Top view:
7	http://downloads.qi-hardware.com/people/werner/tmp/xbrd-top.pdf
8
9	The parameters are as follows:
10
11	Label Description Type Value
12	------- --------------------------------------- ------- -------
13	B Baseline between J21 and Jxx typ 45 mm
14	CB Clearance, back max 22 mm
15	CF Clearance, front max 10 mm
16	CL Clearance, left (seen from front) max 5 mm
17	CR Clearance, right (seen from front) max 15 mm
18	FB Baseline to front wall typ 15 mm
19	FW Front wall thickness typ 3 mm
20	HL Header length (long side) typ 900 mil
21	HW Header width (short side) typ 200 mil
22
23	In the drawing, all dimensions are in mm.
24
25	Typical dimensions would be things we decide in the design.
26
27	Maximum dimensions would be limits for the expansion board
28	designer (e.g., to avoid bumping into other components or
29	walls).
30
31	Unlabeled dimensions are calculated from the parameters and
32	have only an informational character.
33

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