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#apertus IRC Channel Logs

2016/06/20

Timezone: UTC


04:28
Bertl_zZ
changed nick to: Bertl
04:28
Bertl
back now ...
05:09
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11:14
Bertl
off to bed now ... have a good one everyone!
11:14
Bertl
changed nick to: Bertl_zZ
11:17
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12:20
AXIOM-HQ
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12:50
derWalter
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12:51
derWalter
@bertl_zZ Hey Herbert, how can I use an arduino to controll the Beta and how could I prototype this?
13:12
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cbohnens
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cbohnens|away
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17:19
Bertl_zZ
changed nick to: Bertl
17:19
Bertl
morning folks! :)
18:13
troisdsman
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18:13
troisdsman
hi
18:14
Bertl
hey troisdsman!
18:15
troisdsman
i looked at the 3d model of the axiom enclosure and, maybe i'm wrong (i hope) but the fan will be useless at this place
18:18
Bertl
that might very well be, I don't think it was tested yet
18:18
Bertl
(tested or simulated that is)
18:19
Bertl
what are your main concerns?
18:21
troisdsman
i make a screenshot
18:24
troisdsman
https://moncloud.nohost.me/owncloud/index.php/s/XwnlemuKtVyEJwk
18:24
Bertl
derWalter: the best way would be with an ethernet shield
18:24
troisdsman
if you look at this screenshot the fan is represented by the black wire bloc
18:25
Bertl
The owner of moncloud.nohost.me has configured their website improperly. To protect your information from being stolen, Firefox has not connected to this website.
18:25
troisdsman
connectors are in red and the radiator in blue
18:27
troisdsman
is there real need of active cooling?
18:27
troisdsman
on the axiom alpha was it an isue?
18:28
troisdsman
what are the parts that realy need cooling?
18:28
Bertl
yep, thus the Alpha got the huge fan :)
18:28
Bertl
there are two 'problematic' points regarding cooling
18:28
troisdsman
on the sensor or the fpga?
18:28
Bertl
first, the Zynq on MicroZed doesn't survive without cooling
18:29
Bertl
i.e. remove the fan, it ends up shutting down at 140+ °C
18:29
Bertl
the second point is the sensor itself, which doesn't get very hot (typically 10-15° over environment) but will heat up in an enclosure
18:30
Bertl
the power boards produces some heat as well (that's the one right after the MicroZed)
18:31
Bertl
so some kind of air circulation has to be present ... it doesn't need to be much though
18:33
troisdsman
can it be passive?
18:33
John-K
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18:36
troisdsman
is there something on top of the microzed card on the current design?
18:37
troisdsman
is there available place?
18:37
Bertl
the problem with passive cooling is that it will inadvertendly move the heat from the Zynq (which is happy at 90°C) to the sensor (which should be at room temperature(
18:37
Bertl
s/))
18:38
Bertl
define 'on top' of the MicroZed
18:40
troisdsman
here in the 3d model there is a lot of place back of the microzed
18:41
troisdsman
"a lot" mean the size of the usb/rj45 conector
18:45
John-K
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18:45
Bertl
https://www.film-tv-video.de/wp-content/gallery/nab2015-open-source-kamera-axiom-von-ap/B_NAB_Axiom_Beta_2.jpg
18:45
Bertl
https://apertus.org/sites/default/files/styles/frontpage-slider/public/beta_slider_neu.jpg
18:46
Bertl
https://wiki.apertus.org/images/thumb/a/a9/BetaGuide.jpg/500px-BetaGuide.jpg
18:47
Bertl
https://wiki.apertus.org/images/a/a9/BetaGuide.jpg
18:49
troisdsman
how, cool pictures
18:51
troisdsman
is the current fan suficient for the fpga?
18:57
Bertl
yep, we tested two different setups, a 5V fan (30x30x10) which works great but is a little noisy
18:57
Bertl
and a 12V fan (running on 5V) which is very quiet but still sufficient on the open Beta
18:58
Bertl
keeps the FPGA below 70°C
19:00
troisdsman
:/
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19:06
troisdsman
did you try with a radial one?
19:13
Bertl
nope
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troisdsman
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troisdsman
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19:20
troisdsman
sory, disconnected
19:29
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Spirit532_
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23:36
Bertl
off to bed now ... have a good one everyone!
23:36
Bertl
changed nick to: Bertl_zZ
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