==============================================================
Guild: wafer.space Community
Channel: 📐 - Designing / 🏗️-die-sorter
Topic: Discussion about the "wafer.space design sorter" that Andrew Wingate / evezor is designing to enable the service.

See more @ https://github.com/evezor/waferspace_die_sorter
After: 2026-09-30 11:59 p.m.
Before: 2026-11-01 12:00 a.m.
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[2026-10-02 2:04 a.m.] anfroholic
*sorry, started replying and seems I got distracted*

haha, it's all useful, isn't it 😉 
At the base level, it's always nice to have *something* to look back on if there is some kind of issue somewhere. 
Additionally, Tim had wanted some kind of data on what shot in what wafer a die may have come from, it's difficult if something ever happens in the middle and you end up off by one or something, but it's in there anyways.


[2026-10-02 2:06 a.m.] anfroholic
I ordered some more lights and stuff, I'll give it a shot. 
I haven't worked with ML models yet, but again, that's one of the reasons to just keep all the data so you may have a set to train against.
Thanks for the idea


[2026-10-02 2:08 a.m.] anfroholic
Up camera is a fixed camera in a known location, we can move the robot above, knowing where the nozzle is, and correct pick errors. It's pretty common in a lot of pcb pnp machines.


[2026-10-03 4:06 a.m.] anfroholic
Hey all, I was running the machine and was asked to post a little vid. I'll post more in the near future. I have a few I want to finish quickly, then do some small upgrades (better lighting and some small things)
Currently picking some @BreakingTaps dies. 
Basic setup is 
- robot arm
- cartesian bot below wafer that pushes die off tape
- other misc boards that power solenoids, or lights, or motors and a game controller
All the boards are networked over canbus

HUD is cpython bridged onto bus as well. All control is handled through a web interface (Starlette)
- up camera finds die on nozzle
- feeder_camera locates the pocket -- place happens between offsets from these
- down camera is on arm, does mostly calibration and location of the wafer (the dicing house sticks them on there all willy nilly, it's bad)

Like I said, more coming soon, feel free to ask questions

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[2026-10-03 5:33 a.m.] 246tnt
@Andrew Wingate are those run #2 wafers or testing on run #1 wafers?


[2026-10-03 5:34 a.m.] anfroholic
Run #1 
Hoping to get Run #2 Wed hopefully, maybe, hopefully


[2026-10-03 5:35 a.m.] anfroholic
Dicing house has them, they wanted to back grind again, so it's taking longer than we hoped.

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[2026-10-04 4:36 a.m.] anfroholic
Visualizing some of the pick data
Hopefully will be interesting to see improvements over time

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[2026-10-05 4:27 a.m.] mithro_
@BreakingTaps - This might be interesting content for future videos?


[2026-10-05 4:30 a.m.] anfroholic
I will have better stuff in the future. 
Posting stuff *more often* than *more better*


[2026-10-06 7:51 p.m.] polyfractal
definitely! this is awesome stuff, love seeing all this machine dev and behind the scenes. absolutely bet other folks would want to see it in a video too

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[2026-10-13 9:12 a.m.] anfroholic
I'm just going to dump these here.

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[2026-10-13 9:15 a.m.] anfroholic
My setup leaves a lot to be desired, sorry. 
Shots are patterned in a lawnmower pattern going up, over, then back down, over and repeat

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[2026-10-13 9:15 a.m.] sudonet
these are beautiful!

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[2026-10-13 9:17 a.m.] anfroholic


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[2026-10-13 9:19 a.m.] anfroholic


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[2026-10-13 9:21 a.m.] anfroholic


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[2026-10-13 9:22 a.m.] anfroholic


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[2026-10-13 9:22 a.m.] sudonet
and the eyecandy still keeps coming!


[2026-10-13 9:22 a.m.] 246tnt
Is this backlit ?


[2026-10-13 9:24 a.m.] anfroholic
No, they're front lit

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[2026-10-13 9:29 a.m.] anfroholic
@Tholin I tried to give something decent. I'll try again later, I want to get the sort underway

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https://media.githubusercontent.com/media/wafer-space/discord.wafer.space/master/large_media/wafer-space/%F0%9F%93%90%20-%20Designing/die-sorter/2026-10/2026-10_media/tholin_pallette-B14E8.MOV

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[2026-10-13 9:37 a.m.] tholin
I taped out these patterns that are just horizontal arrays of 1u wide metal strips, but with increasing spacing, to see if I could build a light wavelength filter. And you can see it sortof working.

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2026-10_media/image-E9DB3.png


[2026-10-13 9:38 a.m.] tholin
In both the video and photos, the left handside of each pattern is some shade of red, shifting blue in hue towards the other end.


[2026-10-13 9:39 a.m.] anfroholic
Ah, gorgeous!!


[2026-10-13 9:40 a.m.] anfroholic
Not sure why video is not rendering for me, if others are having issues I will try to convert to h.264


[2026-10-13 9:40 a.m.] tholin
One half of this block is metal strips in a consistent 1u spacing, and it consistently reflects mostly blue light, so I think this is working.

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[2026-10-13 9:57 a.m.] anfroholic
@Tholin more stills. 
Seems different things refract at different angles. But doesn't seem like discord is honoring the pic numbering. When I get to your die, I'll snatch one out and get some when I can hold it better by itself.

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[2026-10-13 9:58 a.m.] tholin
Yeah, that seems about right. The light direction most likely need to be aligned with the filter.


[2026-10-13 10:03 a.m.] tholin
This pattern of metal strips of increasing widths is also doing interesting things, but more subtle

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[2026-10-13 1:51 p.m.] rtimothyedwards_19428
Gee, and all my project does is boring electrical stuff.

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[2026-10-13 2:13 p.m.] anfroholic
They are all wonderful!


[2026-10-13 6:00 p.m.] polyfractal
😍  die shots!

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[2026-10-13 7:28 p.m.] mithro_
@BreakingTaps - I think you should get together with @Tholin to show off how her work to more people and demonstrate that there is more fun and interesting things that can be done.


[2026-10-13 7:31 p.m.] mithro_
We need that SRAM and IO cells!


[2026-10-13 7:42 p.m.] mithro_
Dammit, @Tholin & @Andrew Wingate - I had things I was going to do and now I've somehow spent an hour gawking at pretty silicon 😛

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[2026-10-13 10:33 p.m.] essen__
@Andrew Wingate I am forever grateful, these are splendid!

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[2026-10-14 4:00 p.m.] rtimothyedwards_19428
@Tim 'mithro' Ansell :  On my very first full-chip design (1992) I had a very pad-limited chip with a lot of space in the middle so I wrote a little program to convert a bitmap into metal and dropped a giant picture of the Stanford seal in the middle.  But then nobody wanted to talk to me about the silicon cochlea design, they just wanted to know how I did the fancy logo. . .

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[2026-10-14 5:48 p.m.] crockpotveggies
@Andrew Wingate is it possible to grab an individual snapshot of our BISCUT die? Very much want to share with the team


[2026-10-14 7:08 p.m.] namibj
discord cares about selection order; on PC make sure they are sorted in the same order as you wish them to be shown on discord, and select them.


[2026-10-14 7:09 p.m.] namibj
I'm a bit suspicious about the traces being black looking on my `FC01` design (the one die that has pads but no pad ring at all).
I wonder if someone with a multimeter or such may feel like probing some of the obvious continuity/dis-continuity on one of them to sooth the worries.....


[2026-10-14 10:52 p.m.] mithro_
@InfoSecDJ offers pretty nice high quality imaging of dies, great to put in investor decks.

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[2026-10-16 3:24 p.m.] anfroholic
I can't seem to find `BISCUT`
Can you share the project code? https://github.com/wafer-space/ws-run2
Also all of the dies should be represented above.

{Embed}
https://github.com/wafer-space/ws-run2
GitHub - wafer-space/ws-run2: wafer.space GF180MCU Run 2
wafer.space GF180MCU Run 2. Contribute to wafer-space/ws-run2 development by creating an account on GitHub.
2026-10_media/ws-run2-C2BF8


[2026-10-16 5:18 p.m.] crockpotveggies
I think it’s COLF does that make sense?


[2026-10-16 5:25 p.m.] anfroholic
It's up there, this should be it
https://cdn.discordapp.com/attachments/1419841819138854993/1559494764154323005/0041.JPG?ex=6ad33cad&is=6ad1eb2d&hm=c65fa9d9c3e998b60d601742f1ea1d635cd9a4fc1375f05a15faa3b15a9be97e&

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[2026-10-16 5:25 p.m.] crockpotveggies
Oh wonderful thank you!!

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[2026-10-16 8:54 p.m.] mithro_
@J-Lo - Your biscut one is not open source right? It's one of those `?` secret designs?


[2026-10-16 9:01 p.m.] anfroholic
correct, I guess I just took pictures of them all without thinking


[2026-10-16 9:07 p.m.] mithro_
@J-Lo - I mean, they requested it in a public channel - so I think the onus is on them.


[2026-10-16 9:11 p.m.] anfroholic
Let me know how you want me to play the others? Not sure what, if anything you can glean from these pics, they're rather low res.


[2026-10-16 9:14 p.m.] mithro_
@Andrew Wingate - I need to get the terms of service up that say we don't guarantee confidentially and submitting a design means we can publicly publish stuff around your design for marketing purposes.


[2026-10-16 9:15 p.m.] anfroholic
You want me to find the ones now and take them down tho? 
Looks like 11?


[2026-10-16 9:15 p.m.] mithro_
@Andrew Wingate - Also needed for the fact that people can purchase whole wafers and such.


[2026-10-16 9:15 p.m.] mithro_
Only if people complain.

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[2026-10-16 9:22 p.m.] anfroholic
Take this for what it is, but I rubbed my multimeter over the top of your die and saw signs of continuity, so it looks promising. 
I will try some better things in the future, but wanted to let you know.


[2026-10-16 9:23 p.m.] anfroholic
Also the blackness of the traces could just be an artifact of the way I lit them, they had some pretty harsh incident lighting as that was the best contrast.


[2026-10-16 10:25 p.m.] crockpotveggies
@Tim 'mithro' Ansell @Andrew Wingate I’m not so concerned about a photo of the die, appreciate you thinking about it though. The RTL however… 🙂


[2026-10-16 10:28 p.m.] anfroholic
RTL will never be shared. 
Everyone's always anxious and want to see die shots, so I tried to just get things out. 
Thanks for letting us know.


[2026-10-16 10:32 p.m.] anfroholic
@Tim 'mithro' Ansell Just riffing here, but in the future if we pass `private: bool` in the manifest or something, I can just have the machine take some pics and potentially stitch together a reticle and auto-blackout the ones we don't want
*keep in mind the resolution leaves a lot to be desired. 
Also I'm unlikely to have this microscope in Sg, so that's another thought if we even want to keep doing this (I think we do)


[2026-10-16 10:37 p.m.] mithro_
I don't have access to your RTL, so can't accidentally share that 🙂

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[2026-10-17 5:11 a.m.] ghaithalsabagh
@Andrew Wingate 

May you please make a clear shot of RLCM too 🙂


[2026-10-17 5:16 a.m.] anfroholic
wrong one, sorry.


[2026-10-17 5:17 a.m.] anfroholic
ugh, I did have it right. 
They're all there 
https://cdn.discordapp.com/attachments/1419841819138854993/1559495248806150204/0053.JPG?ex=6ad33d21&is=6ad1eba1&hm=825c5b9f9f76b001d9350ee0974f170b57208b4a7470650913481720856c1bb5&****

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[2026-10-17 5:18 a.m.] ghaithalsabagh
Wow 🙂
Thx

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[2026-10-17 5:18 a.m.] anfroholic
Also, very pretty 😍


[2026-10-17 5:19 a.m.] ghaithalsabagh
Hope the inductors to be electrically pretty

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[2026-10-17 10:06 a.m.] saladchap
Idk why but I imagined you rubbing the entire meter over the wafer and divining the continuity 😂

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[2026-10-17 10:42 p.m.] mithro_
@Ghaith Al Sabagh - Are you behind https://github.com/EngGhaith/RLCM-Test-Passives-For-GF180MCUD ?

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https://github.com/EngGhaith/RLCM-Test-Passives-For-GF180MCUD
GitHub - EngGhaith/RLCM-Test-Passives-For-GF180MCUD
Contribute to EngGhaith/RLCM-Test-Passives-For-GF180MCUD development by creating an account on GitHub.
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[2026-10-17 10:50 p.m.] mithro_
@Ghaith Al Sabagh - If so I have two pull requests for you;
 - https://github.com/EngGhaith/RLCM-Test-Passives-For-GF180MCUD/pull/1
 - https://github.com/EngGhaith/RLCM-Test-Passives-For-GF180MCUD/pull/2

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https://github.com/EngGhaith/RLCM-Test-Passives-For-GF180MCUD/pull/1
Add CERN-OHL-P v2 license by mithro · Pull Request #1 · EngGhaith...
The wafer.space project page for RLCM (manufacturing ID G802RLCM) lists the design as licensed under the CERN Open Hardware Licence Version 2 - Permissive. Add the unmodified licence text published...
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https://github.com/EngGhaith/RLCM-Test-Passives-For-GF180MCUD/pull/2
Add README and documentation of the test structures by mithro · Pu...
This adds documentation for the RLCM test chip on the wafer.space GF180MCU Run 2 shuttle (manufacturing ID G802RLCM). It is written from the layout files in the repository; nothing in the layout or...
2026-10_media/2-702F7


[2026-10-17 11:55 p.m.] mithro_
@Ghaith Al Sabagh - I believe @baragonaru is also interested in helping test your chip


[2026-10-18 1:06 a.m.] mithro_
@lromor -^


[2026-10-18 2:10 a.m.] lromor_
Awesome! Thanks


[2026-10-18 5:21 p.m.] ghaithalsabagh
Thank you very much @Tim 'mithro' Ansell 
I would see them


[2026-10-18 5:21 p.m.] ghaithalsabagh
It would be also great 🙂


[2026-10-18 5:26 p.m.] ghaithalsabagh
Accepted
I would change some details later on after I test the dies.
Thank you very much


[2026-10-19 12:06 a.m.] anfroholic
Everyone should love logs

*me:* Machine, you are being dumb, it's written in the logs

*machine:* I do what you program me to do

*me:* ...

https://www.youtube.com/watch?v=GldgZFE4u-Y

{Embed}
Banana Neutron
https://www.youtube.com/watch?v=GldgZFE4u-Y
The Log Song The Ren & Stimpy Show
Like and subscribe
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[2026-10-19 12:08 a.m.] anfroholic
also ~1500 dies sorted today. Worked through some issues, tomorrow should be much better. Not sure how much more I want to go tonight.

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[2026-10-19 5:12 a.m.] namibj
Yay!
If you manage to tell that with e.g. the big square pads those that should be connected are but those that shouldn't aren't, that'd be all the hand held multimeter testing that's reasonably needed.


[2026-10-20 1:39 a.m.] anfroholic
I'm not so sure anymore, I tried again under my microscope. My probe tips are gigantic compared to the pads. I wasn't able to get continuity anymore and any time I thought I did my probes were touching 🤦‍♂️ 
I'll try again tomorrow with some better tools.


[2026-10-21 6:22 a.m.] 246tnt
That's about one wafer worth right ?

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[2026-10-22 7:37 a.m.] ghaithalsabagh
Hi @Andrew Wingate 
Do you have any plan when the #2 run silicon would be shipped?

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[2026-10-22 2:17 p.m.] anfroholic
If you're getting bare dies, we will be shipping Tues Oct 27. The next day the rest are headed to China for packaging. I do not have a definitive date for that.

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[2026-10-22 2:26 p.m.] 246tnt
So this time it's dies on reels ? That's working good now ?


[2026-10-22 2:26 p.m.] anfroholic
Yup and yup

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[2026-10-22 2:27 p.m.] 246tnt
Nice, congrats btw !

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[2026-10-22 3:02 p.m.] tholin
I was hoping to get my COBs before November 20th, or its gonna clash with some stuff I got happening around then.


[2026-10-22 3:32 p.m.] anfroholic


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[2026-10-22 3:33 p.m.] anfroholic
current cycle time is longer than it needs to be because of the feeders. 
You can see them pop a bit on the index, some were popping out at faster speed
Before we sort again, I will be making some changes.


[2026-10-22 3:34 p.m.] 246tnt
What's circular the trace left on the die ? Is it cracking them or just some glue ?


[2026-10-22 3:35 p.m.] anfroholic
It's the picture


[2026-10-22 3:35 p.m.] 246tnt
Oooh ... yeah now that you say it, I can sort of see 😅   My bad ...

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[2026-10-22 4:40 p.m.] anfroholic
@Ghaith Al Sabagh beautiful chip in the feeder cam

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[2026-10-23 1:31 p.m.] namibj
I'd like a majority (say, about 100?) of "my" `FC01` dies with the tester and the few FlexMem COBs.

Do we have an estimated shipping date for the COBs, assuming that things go as smoothly as can reasonably be expected? Ofc. no promises. More trying to estimate how soon I gotta be ready to probe them, such that I'm not to blame for delayed test results.


[2026-10-24 4:51 a.m.] anfroholic
I have you marked as shipping from Singapore, they should be at fedex facility by or before Nov 2


[2026-10-24 4:52 a.m.] namibj
the COBs happen in singapore?


[2026-10-24 4:53 a.m.] anfroholic
No, those are marked as bare die?


[2026-10-24 4:54 a.m.] anfroholic
Not sure what the expectation is here, sorry, think I'm out of the loop on this one.


[2026-10-24 5:17 a.m.] namibj
oh I just figured it'd be easier if they just come with the couple COBs and the tester


[2026-10-24 5:17 a.m.] namibj
i'm not gonna stop you from sending direct though


[2026-10-24 5:17 a.m.] anfroholic
^^ @Tim 'mithro' Ansell


[2026-10-24 6:44 a.m.] mithro_
@namibj - Bare die shipments happen from Singapore, CoB ship from China


[2026-10-24 6:44 a.m.] namibj
ohhhh


[2026-10-24 8:53 p.m.] anfroholic
By no means anywhere near @BreakingTaps @psychogenic quality, beauty, value, etc.
But made a short vid talking about the robot while it was running. *Publish early, publish often*
Someday I will make something actually worth making public, but wanted to give you all a window into what we're doing. 
https://www.youtube.com/watch?v=kV5xYAFfbCw

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Evezor
https://www.youtube.com/watch?v=kV5xYAFfbCw
wafer.space run2 sorting robot
2026-10_media/maxresdefault-1CA91.jpg

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[2026-10-25 10:35 a.m.] saladchap
Interesting video and great to see how it's evolved/evolving!

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