Current Server Time: 19:31 (Central Europe)

#apertus IRC Channel Logs

2020/05/26

Timezone: UTC


00:16
Bertl
off to bed now ... have a good one everyone!
00:17
Bertl
changed nick to: Bertl_zZ
00:19
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
00:21
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
00:21
BAndiT1983
off for today, good night
00:21
BAndiT1983
changed nick to: BAndiT1983|away
01:41
calle__
joined the channel
01:44
mumptai_
left the channel
02:32
metal_dent[m]
Morning!
02:33
metal_dent[m]
BAndiT1983: thank you, will check that out :)
04:18
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
04:19
Spirit532
it's an incredibly tiny subset of the lcsc catalog
04:19
Spirit532
if you want cheap assembly with all the parts sourced, go for PCBWay. I've had moderate success with them, and reasonable prices.
07:33
se6ast1an
good morning
07:33
se6ast1an
thanks BAndiT1983|away!
07:34
se6ast1an
Spirit532: interesting, can you tell us more about your experience?
07:34
Spirit532
I made a few boards
07:34
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)
07:35
Spirit532
Totally turnkey, which was nice.
07:47
se6ast1an
interesting, pcbway is on our list of potential pcb manufacturers
07:48
se6ast1an
what did you pay in the end if you dont mind?
08:47
calle__
left the channel
08:47
mumptai
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09:02
BAndiT1983|away
changed nick to: BAndiT1983
09:35
Bertl_zZ
changed nick to: Bertl
09:35
Bertl
morning folks!
09:36
se6ast1an
good day
10:11
vup
Spirit532: yeah I know
10:12
vup
The plan is to let jlc handle the passives and then do the ic's ourself
10:13
vup
There aren't that many parts left after passives, about 30 I think, so thats manageable
10:17
Spirit532
se6ast1an, there were some tooling charges
10:17
Spirit532
I think around 15-20 usd on top of the order
10:18
Spirit532
and the components came with a slight markup on some
10:18
Spirit532
around 5% I think
10:18
Spirit532
but the boards I made were tiny and demanding, and the total itself was made up mostly of shipping costs still
10:18
Spirit532
so they don't overcharge
10:20
vup
Well I got over $70 per board at pcbway and about $10 per board at jlc
10:24
Spirit532
because pcbway is a lot more realistic than jlc
10:25
Spirit532
jlc's assembly is basically free, but it's limited and sometimes low qualitty
10:27
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
10:54
anuejn
megora: it shouldnt be too hard to either build an axi lite peripheral or use an existing one for that application
10:56
anuejn
and then hook it up via a axi lite to axi full bridge to the ps7 block of the zynq
10:57
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
10:57
anuejn
but ours is rather... unfinished ;)
11:43
BAndiT1983
changed nick to: BAndiT1983|away
11:56
BAndiT1983|away
changed nick to: BAndiT1983
12:05
BAndiT1983
changed nick to: BAndiT1983|away
12:27
se6ast1an
anuejn/vup do you have any screenshot from the layouting or any preview of the Micro R3?
12:27
se6ast1an
anything I can share on twitter...
12:31
se6ast1an
inspiration: https://twitter.com/FauthNiklas/status/1265017260575465474
13:48
vup
se6ast1an: well the layout is currently about this far: https://files.niemo.de/2020-05-26-154739_1920x1080_scrot.png
13:48
vup
https://files.niemo.de/2020-05-26-154729_1920x1080_scrot.png
13:49
vup
not too interesting yet
13:49
se6ast1an
right, well maybe in a day or two :)
13:55
BAndiT1983|away
changed nick to: BAndiT1983
16:57
mithro
left the channel
17:03
mithro
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17:17
mithro
left the channel
17:23
mithro
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18:15
se6ast1an
vup/anuejn how do you plan the mechanical side of r3 currently? in particular the lens mount ?
18:15
vup
same way as r2 currently
18:19
se6ast1an
r2 was a bit difficult to attach to a tripod though
18:21
se6ast1an
also do you plan for a UV/IR filter between lens/sensor currently?
18:24
anuejn
nope
18:24
anuejn
if you have any ideas: they are very welcome
18:26
se6ast1an
well I could design one or more parts for you
18:27
se6ast1an
but I need more information
18:27
se6ast1an
is the image sensor still envisioned to be on a separate pcb?
18:28
vup
yes
18:28
vup
what information do you need?
18:29
se6ast1an
size of sensor pcb, hole diameter, distance from each other
18:29
se6ast1an
height of sensor above PCB plane
18:29
se6ast1an
and rough dimensions of the other pcb, mostly the distance between pcbs
18:29
se6ast1an
and where holes are located there
18:30
vup
well well
18:30
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
18:31
anuejn
height of sensor above pcb plane is variable ;)
18:31
anuejn
bc. there might be different sensors
18:31
vup
the distance between the zturn lite and the mainboard is 5mm
18:31
anuejn
we need some way to account for that
18:32
se6ast1an
thanks
18:33
se6ast1an
I will think about the variable sensor height, could be an issue
18:33
se6ast1an
maybe an adjustable backfocus thread could be a solution
18:34
se6ast1an
but that will make the assembly a bit more complicated and requires more parts
18:36
se6ast1an
the micro r3 board has the same dimensions as the zturn lite?
18:37
se6ast1an
and the same hole pattern?
18:38
vup
our plan was more along the lines of using washer to adjust the distance of the lens mount
18:39
vup
se6ast1an: probably the same hole pattern, but bigger
18:39
vup
the r2 was 91mm x 91mm, r3 will probably be the same
18:39
se6ast1an
washers can raise the mount above the sensor indeed but you create a gap for light to enter there then...
18:40
se6ast1an
thanks, will use 91x91mm for now
18:40
vup
(extending beyond the short side of the zturn lite in equal parts
18:40
se6ast1an
and the sensor pcb, where will it be located, and do you know dimensions already roughly?
18:40
vup
the washer would have to be a complete circle / rectangle around the optical path
18:41
anuejn
maybe also a two part whasher
18:41
anuejn
that can be extendet in height
18:42
anuejn
or some curtain like assembly
18:42
se6ast1an
ah, one large washer, I see, thought one for each screw so 4
18:42
Bertl
more a gasket then?
18:42
anuejn
ah probably both
18:42
anuejn
we had something similiar in the last revision
18:43
anuejn
a 3d printed ring around the optical path
18:43
anuejn
Bertl: yup
18:43
vup
se6ast1an: the distance between the the mainboard and the sensor board is 6mm
18:43
fabian[m]
joined the channel
18:43
anuejn
(see https://github.com/apertus-open-source-cinema/axiom-micro-mechanical)
18:45
se6ast1an
noted, thx
18:45
vup
the pcb's are all 1.6mm thickness
18:45
vup
and we have two connectors from the sensor board to the mainboard, each 20.57mm x 6.4mm
18:46
vup
so we have to atleast accomodate those two
18:46
vup
the plugins connectors are on the part that extends beyond the zturn lite and go into the direction of the zturn lite
18:47
vup
and somewhere we have to fit the shield aswell, probably on the same side as the sensor pcb
18:48
vup
but beyond that we have nothing fixed yet, so if you have any ideas, those would be very welcome
18:49
anuejn
also the sensor pcb size is something we need to think about
18:52
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
18:52
se6ast1an
I think I have the rough setup done: https://cad.onshape.com/documents/119d4253b556f8944095c5ad/w/8cba5fbf62e83d916df2c99f/e/af78801fa9663719e0120078
18:53
vup
we also need to think about the mechanical attachment of the sensor pcb
18:54
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
18:54
anuejn
we also already have a rather high quality 3d model for the z-turn-lite
18:54
se6ast1an
ah, nice
18:54
se6ast1an
self made or from the manufacturer?
18:54
anuejn
self made
18:55
anuejn
se6ast1an: maybe it can just be pressed in place?
18:55
anuejn
hold by the connectors and some sandwich force
18:55
se6ast1an
sure, but the entire weight of lensmount and lens will be on it
18:56
se6ast1an
ah found it: https://github.com/apertus-open-source-cinema/axiom-micro-mechanical/blob/master/pcbs/z-turn-lite.fcstd
18:56
anuejn
also z-turn-lite sized is impossible because the shield has to go somewhere?
18:57
anuejn
se6ast1an: in our current mechanical setup this is not the case?!
18:58
se6ast1an
you mean the r2 setup?
19:00
se6ast1an
off for a bit
19:00
anuejn
yup
20:41
se6ast1an
back
20:42
Bertl
wb
20:42
se6ast1an
in R2 the lens mount was screwed to the mainboard right?
20:43
se6ast1an
we can do that as well in R3 with screws going through the sensor board and into the mainboard
20:44
se6ast1an
but I wouldnt say its optimal as this puts all the mechanical stress on the pcb then
20:44
se6ast1an
a way out would be to make the lens mount also the tripod mount
20:45
se6ast1an
like with the emount adapter on the beta
20:45
se6ast1an
https://wiki.apertus.org/images/thumb/5/57/Beta_Assembly.jpg/350px-Beta_Assembly.jpg
20:51
Bertl
off for now ... have fun!
20:51
Bertl
changed nick to: Bertl_oO
21:11
mumptai
left the channel
21:12
mumptai
joined the channel
21:24
se6ast1an
where exactly is the / are the shields positioned at the front?
21:24
se6ast1an
in the micro r3
21:31
vup
se6ast1an: yeah we thought about doing it similar to the the beta
21:31
se6ast1an
so left and right?
21:31
se6ast1an
and the ethernet on the zturn is pointing upwards?
21:32
vup
se6ast1an: re shield: not sure, we have one, anywhere it fits is probably ok
21:32
se6ast1an
ok
21:32
vup
my first answer was about the lens attachment
21:32
se6ast1an
ah
21:32
se6ast1an
right
21:33
vup
yeah, currently the etheinet on the zturn is pointing upwards
21:38
se6ast1an
right
21:39
se6ast1an
the c mount to m4/3 adapter metal part, are you happy with that one so far?
21:43
BAndiT1983
changed nick to: BAndiT1983|away
21:47
se6ast1an
off for today
21:47
se6ast1an
will continue tomorrow
21:48
se6ast1an
good night
21:58
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
21:59
se6ast1an
Noted
22:16
mumptai
left the channel