Current Server Time: 19:58 (Central Europe)

#apertus IRC Channel Logs

2013/07/08

Timezone: UTC


23:06
Bertl
so, if you installed a tftp server as well, you should now see requests for /ZED/u-boot.scr
23:06
Bertl
(in the logs)
23:07
Bertl
you need to create the ZED directory in you /var/lib/tftp directory (or wherever tftp looks for on ubuntu) and copy the files from my TFTP/ZED directory there
23:09
Bertl
note that you then can create symbolic links (ln -s <from> <to>) from the ZedBoard_OOB_Design directory to the ZED directory (e.g. for system.bin, zImage and devicetree_ramdisk.dtb)
23:20
Bertl
ah, great, ISE can be used to show (at least the xilinx) .ngc
23:25
Bertl
off to bed now ... good luck!
23:47
dmj_nova
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dmj_nova
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dmj_nova
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08:23
Bertl
morning everyone!
09:41
s3bastian
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09:44
s3bastian
morning
10:56
s3bastian
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11:32
s3bastian
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11:33
Bertl
dmj_nova: did you manage to get the tftp working yesterday?
11:38
s3bastian
hello!
11:41
Bertl
hey, how's going?
14:43
dmj_nova
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dmj_nova
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15:15
s3bastian
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s3bastian
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17:35
Bertl
back ...
18:37
s3bastian
dmj_nova, let me know when you are here
19:08
dmj_nova
s3bastian: I'm around
19:11
Bertl
yay!
19:16
s3bastian
hurray
19:16
s3bastian
did you reach andon?
20:08
dmj_nova
s3bastian: yes I did
20:13
dmj_nova
s3bastian: just sent you the quote
20:15
Bertl
great news!
20:21
Bertl
btw, I updated the pmod_debug module, it should now have reached the 'final' v1.0 state :)
20:23
Bertl
dmj_nova: how good are you with SMD soldering?
20:24
s3bastian
dmj_nova, many thanks, great
20:24
dmj_nova
Bertl: I have no idea since I've never done it
20:24
dmj_nova
always ended up soldering through-hole
20:24
dmj_nova
even on my parent's TV :P
20:25
Bertl
okay :)
20:25
dmj_nova
but I'm happy to try and learn :)
20:28
[1]s3bastian
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20:30
Bertl
yeah, well, I was considering sending some of the PCBs directly to you, but I guess this wouldn't be the best project to start with
20:30
s3bastian
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20:30
[1]s3bastian
changed nick to: s3bastian
20:31
Bertl
especially as I can easily reflow solder the LEDs here
20:31
Bertl
OTOH, if you really want to try, you could probably do it on a hot plate as well
20:33
s3bastian
Bertl, do you have any good tricks for smd part placing? I remember a friend of mine modded his vacuum cleaner so he could hold smd parts with a very spiky suction tip and on a button press he could open an outlet on the tube to release the parts
20:33
Bertl
sounds interesting, but you can get so called 'vacuum pens' for a few bucks nowadays
20:34
s3bastian
I guess that would have saved him a lot of trouble
20:35
Bertl
which help for larger parts, but everything below 0805 is IMHO easier placed with a good forceps
20:37
Bertl
placement doesn't matter that much actually for reflow
20:38
Bertl
you just have to make sure that the part is placed in the middle, the hot solder will re-align it to the pads (if they are done properly)
20:39
Bertl
https://www.youtube.com/watch?v=3drirgNktQg
20:40
Bertl
(nice video to show how it works, and fails with the wrong pads :)
20:43
Bertl
https://www.youtube.com/watch?v=1xNSMTWhEvg
20:57
Bertl
hmm, I just realized that we probably want to make the VREF and VREF_ADC for the CMV12k adjustable, no?
20:58
Bertl
so we probably should consider a dual port DAC via I2C for that (i2c is available via FMC, so no big deal)
21:05
Bertl
(they are marked as test pins, so I'm not sure, but the reference design has them connected to DACs)
21:24
s3bastian
interesting videos
21:24
s3bastian
are there any pick and place DIY robots in the works btw?
21:24
s3bastian
like a 3d printer cnc with a tweezer head?
21:26
Bertl
well, it's a little tricky to extract them from reels (and you probably don't want to use the non-reeled versions for automated placement)
21:30
s3bastian
and I guess the next problem is that you would need many reel extractors in case you build something that does that
21:31
s3bastian
what if the parts would come without reel and just be piled up next to the pcb
21:31
s3bastian
the pick and place head would need to be able to rotate the parts
21:31
s3bastian
and have a camera to find and identify them
21:31
s3bastian
too complex or DIY I figure
21:33
s3bastian
dmj_nova, we decided to order the sockets in the USA
21:33
s3bastian
would it be OK if you ordered them and forwarded the package to us
21:33
s3bastian
we will pay for everything of course :)
21:57
dmj_nova
s3bastian: You know what needs ordering yet?
21:57
s3bastian
yes, 5x thru-hole with window
22:03
dmj_nova
wow, that is quite a big pricing difference
22:07
s3bastian
indeed
22:07
s3bastian
even with import duties and double shipping
22:08
dmj_nova
well, as long as the import duties and double shipping are less than $200 that is