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Mumble meetings + Warning
by David Lanzendörfer 21 Apr '20

21 Apr '20

Hello Little heads up: Better try to avoid that Jitsi room where that Merik is hanging around. I checked with NLNet, and some other sources I have, and it turns out that his stories are just fantasy. I don't know... Smells like a con artist, I just don't know yet, what his scheme is, but I already had to deal with a con artist a while ago, who also wanted to leech on the financing I was trying to raise for LibreSilicon... I removed all of Meriks email addresses from this mailing list and deleted his libresilicon mail aliases I had borrowed him for a few days. Lets hope there hasn't been any damage done yet. I'd say, we either switch back to Mumble or could use the integrated Jitsi session feature in Riot. What do you think? Cheers -lev

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Question to everyone with NLNet MoU
by David Lanzendörfer 20 Apr '20

20 Apr '20

Hello everyone A quick question to everyone, who has applied for NLNet funding. Did you do so, by associating with LibreSilicon OR Libre-SoC? This question is just to verify. Cheers -lev

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Liberty Comparison
by Philipp Gühring 15 Apr '20

15 Apr '20

Hi, Does anyone know a tool to compare 2 liberty files (.lib) ? I would like to get a report of the differences and/or similarities, and perhaps some statistics for min/max values, and visualisation of the tables. I would like to get a report from the tool. Best regards, Philipp Gühring

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Reminder - Next Mumble session on Sunday, 23/03/2020, 21.00 HKT
by reminder＠libresilicon.com 15 Apr '20

15 Apr '20

Hello List! Just a small reminder for our next Mumble Sessions on this Sunday, 23/03/2020, at 21.00 Hong Kong Time. Please join us as usual at our Mumble Server murmur.libresilicon.com at Port 64738, the Channel is IC. Thanks for the attention!

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Maskless lithography
by David Lanzendörfer 12 Apr '20

12 Apr '20

Hi everyone So last Sunday, Ferenc and I brainstormed on how to achieve smaller feature sizes with a UV wave length, which limits us to 400nm or so. We discussed splitting a lower feature size layout into multiple masks and then doing overlapping exposure steps. Ferenc pointed out, that we might run into an offset issue. I've been thinking about this for a while and the solution came to me on the toilet just now, and it's actually surprisingly simple. Since we're using a DMD and not physical masks, we can do the multiple exposure steps all at once, without any stepping in between. while(!eow()) { // end of wafer expose_mask(1); expose_mask(2); step_to_next(); } cheers -lev

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Maskless lithography
by David Lanzendörfer 11 Mar '20

11 Mar '20

Hi I'm apparently not the first one with the idea to use a DMD chip and an UV light source for exposure: https://www.researchgate.net/figure/Layout-for-UV-based-DMD-system-If-the-i… There are actually parts available: http://www.ti.com/product/DLP9500UV http://www.ti.com/product/DLP9000XUV For those chips, the UV wave length would be around 360nm The price on Mouser is 8888 USD, so around 9 thousand USD The chip is exactly made for mask less lithography systems as the one I wanna build, it's even mentioned in the data sheet: http://www.ti.com/lit/ds/symlink/dlp9500uv.pdf By optimizing the aperture of the lens system, this means that one could perfectly fine produce feature sizes down to 150 nm or so, maybe even smaller. I wonder, whether we should make a gofundme campaign for buying the required second hand stepper and this chip... Hmm. Also. Since this chip is super expensive, we will need to *really* make sure, that there's no mistake in the PCB, because we only have one attempt. Cheers -lev

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Weekly Mumble
by Éger Ferenc 08 Mar '20

08 Mar '20

Hello Everyone! Is the scheduling of weekly Mumble session still Sunday 2100 HKT? I found no-one there and then. Regards, Ferenc

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Mumble, in an hour
by David Lanzendörfer 16 Feb '20

16 Feb '20

Hi folks Please don't forget, that we've got a Mumble session in less than an hour. Cheers -lev

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Mumble, quick reminder for my fellow nerds: Today is Sunday
by David Lanzendörfer 09 Feb '20

09 Feb '20

Hi everyone I'm idling here around in Mumble. Quick reminder: Today is Sunday And in 10 minutes it's 9pm HKT ;-) -lev

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Portugal, Clean room, HOLY SHIT!!! O_O
by David Lanzendörfer 06 Feb '20

06 Feb '20

Hello folks I've just been pointed to this OpenAccess lab in Braga: https://lims.inl.int/WebForms/Equipment/EquipmentList.aspx That's more advanced than HKUST!!! And it has the same access conditions AS HKUST!! Seems not only my personal life is getting hotter, but also the lab itself! :D -lev

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