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#apertus IRC Channel Logs

2016/01/20

Timezone: UTC


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intracube
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Bertl_zZ
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04:01
Bertl
back now ...
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09:13
John_K
se6astian: hey, got my assembled axiom beta boards back from the board house
09:14
John_K
found out the male headers I ordered for the interface board are too short
09:15
John_K
do you know offhand how long they need to be? I don't have my calipers with me to measure - looking at 6.10mm connectors on digikey
09:16
Bertl
hey John_K! you mean the power connetors which go through the main board, right?
09:16
John_K
yep!
09:17
Bertl
sec, let me dig out the part number for that
09:17
Bertl
we had to try out a few different as well
09:18
John_K
aha, glad to know I'm in good company ;)
09:19
John_K
btw, come of the hirose connectors and samtec's were hard to get
09:20
John_K
not sure if it's a short-term shortage or if you might want to try alternate parts in future revisions
09:20
Bertl
which ones exactly?
09:21
John_K
hrm, let me check my farnell order
09:22
Bertl
btw, if you find good alternative parts, please by all means, let us know
09:22
se6astian
John_K: great to hear!
09:22
se6astian
btw does anyone here speak spanish?
09:22
John_K
the wurth 610008243021 I had to sample directly from Wurth
09:23
John_K
it's the female header for power
09:23
Bertl
according to my notes, HTSW-102-17-L-S are the headers we are using on the dummy interface board
09:23
John_K
aha 6.2mm :)
09:23
John_K
i'll try to source those or something similar
09:24
Bertl
actually that should be 21.08/15.74mm
09:24
John_K
FX10A-144S-SV(21), DF12(5.0)-20DP-0.5V(86), 61083-101400LF, 61082-101400LF were all hard to find
09:25
John_K
there were 0 at distributers in North America, I had to overnight them from Farnell in England
09:25
Bertl
but let me double check once more, I have a feeling that the -15 were better
09:26
John_K
is that height the total height or the height of the connector side?
09:26
Bertl
we have 5mm between power and main board, and 5mm between main and interface board
09:26
Bertl
the pcb is typically 1.7mm, we pass two of them
09:27
John_K
ok
09:27
Bertl
so from bottom of interface board it will be 2*6.7 = 13.4mm
09:27
John_K
and then into the contact block
09:27
John_K
ok
09:27
Bertl
we also need the minimum entry to the female connector
09:27
John_K
right
09:28
Bertl
the C dimension on the HTSW (http://suddendocs.samtec.com/catalog_english/htsw_th.pdf)
09:28
Bertl
excludes 2.54mm for the header itself, which should work as entry for the female one
09:29
Bertl
so the 13.21 (-15) might just work, while the 15.74 (-17) will stick out a little
09:31
Bertl
so, personally I'd go for the shorter ones
09:31
Bertl
you can always push them a little further out before you solder them on
09:32
Bertl
OTOH, the safe bet is to take the longer ones and in case they are too long, push them in and cut them off at the solder side
09:33
Bertl
but I'm pretty sure the shorter ones worked
09:33
John_K
yeah the long ones are the only ones that appear stocked on digikey anyway
09:34
Bertl
(I don't have a camera here to measure atm)
09:34
John_K
I'm fine with cutting if I need to
09:35
Bertl
yeah, just make sure to try first, and cut on the solder side
09:35
Bertl
otherwise you will damage the sensitive female parts :)
09:36
Bertl
btw, you can pick any bottom entry female header for that, so no need to go for a specific brand
09:36
John_K
hehehe
09:46
John_K
will update with photos and status as bringup progresses
09:47
John_K
btw, does the source for cmv_snap3 and cmv_reg live anywhere?
09:47
John_K
I'm using the monochrome sensor so I'll have to tweak a few settings
09:49
Bertl
it currently lives on the SD card image (at least the latest version) but we will make sure that it shows up on github in the near future
09:49
John_K
that would be helpful ;)
09:49
Bertl
(we have to merge two branches first, but should be done soon)
09:49
John_K
aha ok
09:51
Bertl
but note that cmv_snap3 works out of the box with monochrome sensors
09:51
Bertl
(we already tested a monochrome version)
09:52
Bertl
in any case, if you get there before we have it properly on github, just drop me a note and I'll upload it somewhere
09:53
John_K
ah good to know, thanks - it'll probably be 2 days since I have to wait for the new headers
09:53
John_K
presuming the rest of the assembly went well
09:53
Bertl
for the male headers, btw, you can choose between HTSW-102 and 101 .. i.e. 2 rows 1 pin or 2 pins 1 row
09:54
Bertl
(doesn't matter as the spacing is the same)
09:54
John_K
yeah I had to play with that
09:54
John_K
right
12:51
Bertl
off for now ... bbl
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Bertl
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se6astian
I am off to bed
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