Current Server Time: 11:14 (Central Europe)

#apertus IRC Channel Logs

2020/05/26

Timezone: UTC


01:16
Bertl
off to bed now ... have a good one everyone!
01:17
Bertl
changed nick to: Bertl_zZ
01:19
BAndiT1983
metal_dent[m]: se6ast1an: icon conversion was adjusted by me, also new section for static data introduced and icons will reside there, maybe also fonts and similar should be moved there
01:21
BAndiT1983
reason is simple, because of inheritance the structs were marked as not initilaized, have checked it, but had no solution after several tries, when data is uninitialized then it is stored in the .bss section of the PIC32, but it's not big and i didn't want to mess around with it, especially when i expect the icons to be data blobs and nothing else
01:21
BAndiT1983
off for today, good night
01:21
BAndiT1983
changed nick to: BAndiT1983|away
02:41
calle__
joined the channel
02:44
mumptai_
left the channel
03:32
metal_dent[m]
Morning!
03:33
metal_dent[m]
BAndiT1983: thank you, will check that out :)
05:18
Spirit532
vup, before you design everything for JLCSMT, a word of warning: their service is rather... meh, and they have a REALLY tiny parts collection
05:19
Spirit532
it's an incredibly tiny subset of the lcsc catalog
05:19
Spirit532
if you want cheap assembly with all the parts sourced, go for PCBWay. I've had moderate success with them, and reasonable prices.
08:33
se6ast1an
good morning
08:33
se6ast1an
thanks BAndiT1983|away!
08:34
se6ast1an
Spirit532: interesting, can you tell us more about your experience?
08:34
Spirit532
I made a few boards
08:34
Spirit532
They took care of everything - I emailed them the BOM, they asked some questions, gave me a pretty transparent price list and substituted some sources(genuine parts, cheaper)
08:35
Spirit532
Totally turnkey, which was nice.
08:47
se6ast1an
interesting, pcbway is on our list of potential pcb manufacturers
08:48
se6ast1an
what did you pay in the end if you dont mind?
09:47
calle__
left the channel
09:47
mumptai
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10:02
BAndiT1983|away
changed nick to: BAndiT1983
10:35
Bertl_zZ
changed nick to: Bertl
10:35
Bertl
morning folks!
10:36
se6ast1an
good day
11:11
vup
Spirit532: yeah I know
11:12
vup
The plan is to let jlc handle the passives and then do the ic's ourself
11:13
vup
There aren't that many parts left after passives, about 30 I think, so thats manageable
11:17
Spirit532
se6ast1an, there were some tooling charges
11:17
Spirit532
I think around 15-20 usd on top of the order
11:18
Spirit532
and the components came with a slight markup on some
11:18
Spirit532
around 5% I think
11:18
Spirit532
but the boards I made were tiny and demanding, and the total itself was made up mostly of shipping costs still
11:18
Spirit532
so they don't overcharge
11:20
vup
Well I got over $70 per board at pcbway and about $10 per board at jlc
11:24
Spirit532
because pcbway is a lot more realistic than jlc
11:25
Spirit532
jlc's assembly is basically free, but it's limited and sometimes low qualitty
11:27
vup
I haven't heard anything about low quality, but yes being limited to certain parts is suboptimal, but also what makes it so cheap. And for this board I am ok with populating the ~30 parts jlc doesn't do myself, if I don't have to care about the 500 passives that jlc can do
11:54
anuejn
megora: it shouldnt be too hard to either build an axi lite peripheral or use an existing one for that application
11:56
anuejn
and then hook it up via a axi lite to axi full bridge to the ps7 block of the zynq
11:57
anuejn
you could have a look at the axi lite slaves of Bertl if you are doing vhdl or the one vup and me build if you are doing nmigen
11:57
anuejn
but ours is rather... unfinished ;)
12:43
BAndiT1983
changed nick to: BAndiT1983|away
12:56
BAndiT1983|away
changed nick to: BAndiT1983
13:05
BAndiT1983
changed nick to: BAndiT1983|away
13:27
se6ast1an
anuejn/vup do you have any screenshot from the layouting or any preview of the Micro R3?
13:27
se6ast1an
anything I can share on twitter...
13:31
se6ast1an
inspiration: https://twitter.com/FauthNiklas/status/1265017260575465474
14:48
vup
se6ast1an: well the layout is currently about this far: https://files.niemo.de/2020-05-26-154739_1920x1080_scrot.png
14:48
vup
https://files.niemo.de/2020-05-26-154729_1920x1080_scrot.png
14:49
vup
not too interesting yet
14:49
se6ast1an
right, well maybe in a day or two :)
14:55
BAndiT1983|away
changed nick to: BAndiT1983
17:57
mithro
left the channel
18:03
mithro
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18:17
mithro
left the channel
18:23
mithro
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19:15
se6ast1an
vup/anuejn how do you plan the mechanical side of r3 currently? in particular the lens mount ?
19:15
vup
same way as r2 currently
19:19
se6ast1an
r2 was a bit difficult to attach to a tripod though
19:21
se6ast1an
also do you plan for a UV/IR filter between lens/sensor currently?
19:24
anuejn
nope
19:24
anuejn
if you have any ideas: they are very welcome
19:26
se6ast1an
well I could design one or more parts for you
19:27
se6ast1an
but I need more information
19:27
se6ast1an
is the image sensor still envisioned to be on a separate pcb?
19:28
vup
yes
19:28
vup
what information do you need?
19:29
se6ast1an
size of sensor pcb, hole diameter, distance from each other
19:29
se6ast1an
height of sensor above PCB plane
19:29
se6ast1an
and rough dimensions of the other pcb, mostly the distance between pcbs
19:29
se6ast1an
and where holes are located there
19:30
vup
well well
19:30
vup
so the zturn lite dimensions can be found here: http://www.myirtech.com/soft.asp?id=847 and http://www.myirtech.com/soft.asp?id=945
19:31
anuejn
height of sensor above pcb plane is variable ;)
19:31
anuejn
bc. there might be different sensors
19:31
vup
the distance between the zturn lite and the mainboard is 5mm
19:31
anuejn
we need some way to account for that
19:32
se6ast1an
thanks
19:33
se6ast1an
I will think about the variable sensor height, could be an issue
19:33
se6ast1an
maybe an adjustable backfocus thread could be a solution
19:34
se6ast1an
but that will make the assembly a bit more complicated and requires more parts
19:36
se6ast1an
the micro r3 board has the same dimensions as the zturn lite?
19:37
se6ast1an
and the same hole pattern?
19:38
vup
our plan was more along the lines of using washer to adjust the distance of the lens mount
19:39
vup
se6ast1an: probably the same hole pattern, but bigger
19:39
vup
the r2 was 91mm x 91mm, r3 will probably be the same
19:39
se6ast1an
washers can raise the mount above the sensor indeed but you create a gap for light to enter there then...
19:40
se6ast1an
thanks, will use 91x91mm for now
19:40
vup
(extending beyond the short side of the zturn lite in equal parts
19:40
se6ast1an
and the sensor pcb, where will it be located, and do you know dimensions already roughly?
19:40
vup
the washer would have to be a complete circle / rectangle around the optical path
19:41
anuejn
maybe also a two part whasher
19:41
anuejn
that can be extendet in height
19:42
anuejn
or some curtain like assembly
19:42
se6ast1an
ah, one large washer, I see, thought one for each screw so 4
19:42
Bertl
more a gasket then?
19:42
anuejn
ah probably both
19:42
anuejn
we had something similiar in the last revision
19:43
anuejn
a 3d printed ring around the optical path
19:43
anuejn
Bertl: yup
19:43
vup
se6ast1an: the distance between the the mainboard and the sensor board is 6mm
19:43
fabian[m]
joined the channel
19:43
anuejn
(see https://github.com/apertus-open-source-cinema/axiom-micro-mechanical)
19:45
se6ast1an
noted, thx
19:45
vup
the pcb's are all 1.6mm thickness
19:45
vup
and we have two connectors from the sensor board to the mainboard, each 20.57mm x 6.4mm
19:46
vup
so we have to atleast accomodate those two
19:46
vup
the plugins connectors are on the part that extends beyond the zturn lite and go into the direction of the zturn lite
19:47
vup
and somewhere we have to fit the shield aswell, probably on the same side as the sensor pcb
19:48
vup
but beyond that we have nothing fixed yet, so if you have any ideas, those would be very welcome
19:49
anuejn
also the sensor pcb size is something we need to think about
19:52
vup
I think for the sensor pcb, to a certain extend, the bigger the better, there are not a lot of advantages to keeping it small
19:52
se6ast1an
I think I have the rough setup done: https://cad.onshape.com/documents/119d4253b556f8944095c5ad/w/8cba5fbf62e83d916df2c99f/e/af78801fa9663719e0120078
19:53
vup
we also need to think about the mechanical attachment of the sensor pcb
19:54
se6ast1an
<vup> I think for the sensor pcb, to a certain extend, the bigger the better, there are not a lot of advantages to keeping it small <- yes if you make it zturnlite sized you can use the holes for <vup> we also need to think about the mechanical attachment of the sensor pcb
19:54
anuejn
we also already have a rather high quality 3d model for the z-turn-lite
19:54
se6ast1an
ah, nice
19:54
se6ast1an
self made or from the manufacturer?
19:54
anuejn
self made
19:55
anuejn
se6ast1an: maybe it can just be pressed in place?
19:55
anuejn
hold by the connectors and some sandwich force
19:55
se6ast1an
sure, but the entire weight of lensmount and lens will be on it
19:56
se6ast1an
ah found it: https://github.com/apertus-open-source-cinema/axiom-micro-mechanical/blob/master/pcbs/z-turn-lite.fcstd
19:56
anuejn
also z-turn-lite sized is impossible because the shield has to go somewhere?
19:57
anuejn
se6ast1an: in our current mechanical setup this is not the case?!
19:58
se6ast1an
you mean the r2 setup?
20:00
se6ast1an
off for a bit
20:00
anuejn
yup
21:41
se6ast1an
back
21:42
Bertl
wb
21:42
se6ast1an
in R2 the lens mount was screwed to the mainboard right?
21:43
se6ast1an
we can do that as well in R3 with screws going through the sensor board and into the mainboard
21:44
se6ast1an
but I wouldnt say its optimal as this puts all the mechanical stress on the pcb then
21:44
se6ast1an
a way out would be to make the lens mount also the tripod mount
21:45
se6ast1an
like with the emount adapter on the beta
21:45
se6ast1an
https://wiki.apertus.org/images/thumb/5/57/Beta_Assembly.jpg/350px-Beta_Assembly.jpg
21:51
Bertl
off for now ... have fun!
21:51
Bertl
changed nick to: Bertl_oO
22:11
mumptai
left the channel
22:12
mumptai
joined the channel
22:24
se6ast1an
where exactly is the / are the shields positioned at the front?
22:24
se6ast1an
in the micro r3
22:31
vup
se6ast1an: yeah we thought about doing it similar to the the beta
22:31
se6ast1an
so left and right?
22:31
se6ast1an
and the ethernet on the zturn is pointing upwards?
22:32
vup
se6ast1an: re shield: not sure, we have one, anywhere it fits is probably ok
22:32
se6ast1an
ok
22:32
vup
my first answer was about the lens attachment
22:32
se6ast1an
ah
22:32
se6ast1an
right
22:33
vup
yeah, currently the etheinet on the zturn is pointing upwards
22:38
se6ast1an
right
22:39
se6ast1an
the c mount to m4/3 adapter metal part, are you happy with that one so far?
22:43
BAndiT1983
changed nick to: BAndiT1983|away
22:47
se6ast1an
off for today
22:47
se6ast1an
will continue tomorrow
22:48
se6ast1an
good night
22:58
vup
se6ast1an: the c mount to m4/3 works ok'ish, mostly getting to fit tightly to a 3d printed bayonet is a bit difficult, but the part itself is ok
22:59
se6ast1an
Noted
23:16
mumptai
left the channel