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| 09:01 | mithro | felix_: Got a moment shortly to discuss the SDI stuff a bit?
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| 09:03 | felix_ | sure
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| 09:06 | felix_ | mithro: Bertl_zZ said that you have started some adapter board to be able to plug a single or dual axiom extension module into the tofe slot on the hdmi2usb board; can you point me to that design?
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| 09:07 | mithro | felix_: I'll give you two guesses on where you might find that :-P
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| 09:09 | felix_ | ah, found it on github https://github.com/timvideos/HDMI2USB-TOFE-AXIOM-adapter
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| 09:11 | mithro | felix_: :-P
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| 09:11 | mithro | felix_: It's not great
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| 09:12 | felix_ | i'll see if it's easier to fix the design or redo the board from scratch
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| 09:17 | se6astian | changed nick to: se6astian|away
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| 09:48 | mithro | felix_: The schematic is fine, the PCB could have the high speed traces re-routed to be less weird
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| 09:49 | mithro | felix_: So I feel like I'm a bit out of the loop around your plans -- as one of the major stake holders of the project it would be good if you could keep me updated on how things are going and such
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| 09:50 | mithro | felix_: Totally understand with se6astian / Bertl_zZ both being in the same timezone as yourself it is easier to collaborate with them
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| 09:52 | mithro | felix_: I assume we are still waiting to hear back from the prototype fund?
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| 09:55 | mithro | felix_: You also visited the Bertl / se6astian in Vienna?
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| 09:57 | mithro | felix_: Also wanted to chat about https://docs.google.com/drawings/d/1DuZYa9mfnueYWhrIyPQ-Ifr7PnmmNQIBdbBN1t8sykw/edit
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| 10:01 | felix_ | hm, i thought i did write an email with the current plan?!
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| 10:01 | felix_ | yep, i visited se6astian|away and Bertl_zZ in vienna
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| 10:02 | felix_ | i'm still waiting for feedback from the prototype fund
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| 10:04 | felix_ | mithro: have a look for the email with the message id *email address removed* that's the curret plan
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| 10:04 | felix_ | *current
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| 10:06 | mithro | Short update on the SDI module itself: We'll make a SDI module for the AXIOM that uses both slots. With the adapter board it can also be plugged into the HDMI2USB.
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| 10:06 | mithro | To make the process of creating a board for that easier, I'll design a baseboard for the Artix 7 with gigabit transceivers module from Trenz that has 2x SDI in, 2x SDI out and the required clocking circuitry. When SDI works on those (tested with one of the proprietary cores), I'll design the AXIOM module containing an Artix 7 and the SDI stuff.
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| 10:06 | mithro | The 12G SDI via a Kintex 7 FPGA would only work with the FPGA in the really big packages; the ones in the smaller packages don't support 12Gbit/s.
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| 10:06 | mithro | I don't understand the second line
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| 10:07 | felix_ | to test the sdi circuitry it's easier to make a baseboard for the trenz fpga module with gigabit transceivers and not do a full board design with the fpga on the same board
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| 10:08 | felix_ | so basically use a known-working fpga module first to test the sdi circuitry and then do the real board with both sdi circuitry and fpga on the same board
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| 10:09 | mithro | A FPGA module which maps the Trenz FPGA module to the SPF interface and a SPF to SDI boards currently exist?
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| 10:10 | felix_ | spf?
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| 10:10 | mithro | s/spf/SFP/
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| 10:10 | mithro | https://en.wikipedia.org/wiki/Small_form-factor_pluggable_transceiver -- ?
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| 10:11 | felix_ | no, the sfp thing is dead; too expensive
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| 10:11 | mithro | felix_: To expensive in what way?
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| 10:11 | felix_ | i'll make a board first that contains sdi cable driver and equalizer chips and this board will be plugged onto it https://shop.trenz-electronic.de/de/TE0714-02-35-2IC6-FPGA-Modul-mit-Xilinx-Artix-7-XC7A35T-2CSG325I-Speedgrade-2-1.8-V?c=365
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| 10:11 | felix_ | well, the sdi sfp costs around 300 euros or so
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| 10:12 | felix_ | making a custom base board with the sdi chips is cheaper and since the final design will also use those chips, that's imho a better way
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| 10:12 | mithro | felix_: See, this is where i'm out of the loop
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| 10:13 | felix_ | hm, yeah, i somehow thought that this was clear from the email, but yeah, that wasn't really clear when you don't know the changed plan :/
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| 10:14 | mithro | felix_: So what is the current plan to get from "nothing" to the end goal?
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| 10:17 | felix_ | before september i'll make a base board for the trenz module that has 2x sdi in and 2x sdi out (no sdi sfp involved) and test it with a commmercial sdi core to make sure the hardware works. then i'll design a custom board for the dual axiom connector with an artix7 fpga and the sdi chips and rework/redisign the axiom-tofe adapter board
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| 10:19 | mithro | A couple of things to keep in mind, I have access to someone who can do reasonable good job of PCB routing for us
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| 10:20 | mithro | I feel like it's best to concentrate on the software side of things first?
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| 10:20 | felix_ | routing pcbs isn't that difficult for me
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| 10:20 | felix_ | no, i'll do the pcb stuff before the project begings in september
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| 10:21 | felix_ | the funding is only for the software and gateware part
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| 10:23 | mithro | I would also like for this software to work with stuff people can buy too, so that even if expensive people can buy the parts and replicate having a working board
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| 10:24 | mithro | Having people able to use the Digilent boards with the HDMI2USB firmware has been really useful for people who want to play with stuff
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| 10:24 | felix_ | you mean with a widely available fpga board with some really expensive sdi fmc board? sure that will also work
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| 10:24 | mithro | felix_: Yeah
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| 10:25 | mithro | felix_: Which is the route I thought we were taking with the Trenz stuff
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| 10:25 | mithro | felix_: That planning doc also had the idea of FMC based system
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| 10:25 | mithro | There are lots of FMC based options - they are quite expensive but many people of the interested will also have half the parts already....
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| 10:26 | felix_ | for the kintex version the sdi fmc board probably is the way to go
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| 10:27 | mithro | felix_: While I'm sure PCB routing is easy for you, your time is also pretty precious :-P
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| 10:27 | mithro | There also seems to be some plan about trying to get the C3VOC to use an AXIOM camera at 34C3?
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| 10:28 | mithro | If something like that is going to happen, I'm very interested in being there in person
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| 10:28 | felix_ | i talked to someone from the c3voc and he said that it's rather easy for them to swap one of their cameras with an axiom with sdi output
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| 10:28 | felix_ | integrating a hdmi2usb board in their flow isn't that trivial though
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| 10:29 | felix_ | if the sdi output for the axiom gets ready until the 34c3, i'm quite sure that it will be used. maybe not as primary camera for a conference room, but at least as second camera
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| 10:29 | felix_ | i'm afk for maybe 20 minutes; have to go to the office now
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| 10:30 | mithro | felix_: Okay, I'm pretty tired so I'm going to finish for the night too
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| 10:45 | felix_ | ok. good night
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| 10:45 | mithro | felix_: but we should try and make sure we are all on the same page about what we are trying to do
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| 10:46 | felix_ | definitely
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| 10:49 | felix_ | mithro: i'd like if you also talk to Bertl_zZ and se6astian|away to make sure that you expect the same from the project
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| 10:49 | mithro | felix_: Yeah
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| 10:51 | felix_ | and yes, i'm not that experienced in project planning and similar stuff; still have to learn a thing or two there :)
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| 11:04 | felix_ | i think it would be good to have some google hangouts session in the early evening (maybe ~17:00 UTC?) some day
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| 11:55 | Bertl_zZ | changed nick to: Bertl
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| 11:55 | Bertl | morning folks!
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| 11:55 | Bertl | felix_: make that IRC instead and I'm in :)
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| 12:05 | felix_ | would also be ok for me, although i find voice chat more efficient for that sort of stuff
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| 12:06 | Bertl | I don't do voice chat.
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| 12:16 | comradekingu | Can still listen in
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| 13:57 | Bertl | off for now ... bbl
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| 19:18 | felix_ | leaves his office now; not sure if i'll open my irc client before tomorrow again
| | 19:23 | Bertl_oO | have a nice evening then!
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| 22:22 | se6astian | good night
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