Werner's Miscellanea
Sign in or create your account | Project List | Help
Werner's Miscellanea Git Source Tree
Root/
Source at commit 5bf0b3050350f1d44a0a5654a9ffa314c82c2e10 created 11 years 11 months ago. By Werner Almesberger, m1/xbrd/: reduced CB from 25 mm to 22 mm, reducing overall length to 82.08 mm | |
---|---|
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 |
Branches:
master