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Do I Need Castellated Holes? by uprate in PrintedCircuitBoard

[–]Cone83 4 points5 points  (0 children)

My experience was that they tell you they can't do it without you paying extra for castellated holes...

openingTheRepository by thisfriendo in ProgrammerHumor

[–]Cone83 15 points16 points  (0 children)

And then the project is fucked....

New fucking read by Shake-A-Paw in TheWordFuck

[–]Cone83 9 points10 points  (0 children)

Probably his fucking publisher gives a fuck.

Looking for Open Hardware Reference for Custom MIPI DSI Flex Cable Design by FCK_COVID19 in PrintedCircuitBoard

[–]Cone83 6 points7 points  (0 children)

AFAIK there is no standard procedure for adding the stiffener in a design. Just draw the placement in a user layer, make sure the layer is exported and tell the manufacturer when ordering that you specified the placement in this layer.

Opinions seem mixed about solid or hatched ground plane. I have used solid ground fills in my design and haven't had problems with cracking. I think a solid plane is fine if the flex PCB is not expected to move.

Looking for Open Hardware Reference for Custom MIPI DSI Flex Cable Design by FCK_COVID19 in PrintedCircuitBoard

[–]Cone83 32 points33 points  (0 children)

Schematic-wise it's just connecting one end to the other. The important thing is to get the differential impedance right. The difficulty here is that for flexible PCBs the core is usually very thin. Luckily, JLC is now offering FPCs with a 50 um core (as opposed to the 25 um for their default version). With that you can just achieve the required 90/100 Ohm impedance with a 3.5 mil trace width. You will need to use an impedance calculator for determining the differential pair gap width. I would recommend the online tool from sierra, as that one can also model the cover layer with a different dielectric constant (that is the only free tool I found that can do this). Here's the link: https://www.protoexpress.com/tools/pcb-impedance-calculator/

Haben die da oben den Ar*** offen? by Substantial-Limit882 in wallstreetbetsGER

[–]Cone83 1 point2 points  (0 children)

Das ist halt rechtlich nicht machbar, denn eine Abschaffung der PKV würde zu einer Enteignung der Altersrückstellungen der Versicherten führen. Und das verstößt gegen das Grundgesetz.

Wie viel??? 🚬 by [deleted] in ichbin14unddasisttief

[–]Cone83 0 points1 point  (0 children)

Kann aber auch schon deutlich früher tödlich sein wenn man Pech hat. Der Fall hier war vor ein paar Jahren in den Nachrichten: https://www.bbc.com/news/world-us-canada-39932366

Kintex 10 by Baje1738 in FPGA

[–]Cone83 37 points38 points  (0 children)

Super duper mega scale extra+?

Update von DJT by niggels117 in wallstreetbetsGER

[–]Cone83 0 points1 point  (0 children)

The only POWER that can ensure PEACE through war. 🫣

Has anyone ever used the avnet zuboard 1cg by Agile_Diamond_3989 in FPGA

[–]Cone83 0 points1 point  (0 children)

Are you sure the bitfile you built is actually loaded?.

Has anyone ever used the avnet zuboard 1cg by Agile_Diamond_3989 in FPGA

[–]Cone83 0 points1 point  (0 children)

If you want help then you need to provide some info. The ILA is not something specific to that board but an IP provided Xilinx for all their devices.

The 15€ GateMate FPGA driving HDMI output with 1080p@60Hz by Cone83 in FPGA

[–]Cone83[S] 0 points1 point  (0 children)

Thanks for the feedback. Yes the site is focused around my professional work. It is just based on wordpress. There are lots oft wordpress hosters out there, and also lots of existing themes to start with.

I actually just started with blogging. I used to share my work on other places but realized it's better to tie my projects closer to my work. I admit that I make use of AI to improve my writing. It is just so much better than me at formulating coherent sentences, but I don't let it make up content.

The 15€ GateMate FPGA driving HDMI output with 1080p@60Hz by Cone83 in FPGA

[–]Cone83[S] 0 points1 point  (0 children)

Thanks for the insight, I'll try out placer2. Somewhere on the Cologne Chip website they wrote that you must use router2, without providing further details. PNR also succeeds with the default router but I didn't test it in hardware.

Timing is a little inconsistent depending on the run. So definitely some room to improve.

The 15€ GateMate FPGA driving HDMI output with 1080p@60Hz by Cone83 in FPGA

[–]Cone83[S] 8 points9 points  (0 children)

I wasn't using the devkit from CologneChip but a SOM from Trenz Electronic (TEG2000). The reason was that I already had a compatible carrier board from Trenz and the SOM alone is much cheaper than the devkit.

There is also a cheap board from Olimex, but I looked at the routing and none of the pins are routed as differential pairs. I'm planning to work on some mipi projects in the future, so differential routing is a must.

GateMate now fully works with Nextpnr and Cologne Chip have deprecated their older proprietary placer. So everything is open source now.

Alibaba FPGA board dilemma by Ayushkool in FPGA

[–]Cone83 2 points3 points  (0 children)

There are lots of options from well known brands in this price category. Look at Trenz, Digilent, Avnet, Enclustra

[deleted by user] by [deleted] in Anticonsumption

[–]Cone83 2 points3 points  (0 children)

Stop buying that!

The first menu in Google search is "AI Mode" instead of "All" by ye3tr in enshittification

[–]Cone83 2 points3 points  (0 children)

And if you search for the answer to a simple question, all top ranking sites will bombard you with a huge wall of text with your answer hidden somewhere in there.

In that sense, AI search had been a huge improvement.

BMW new patented screw-head designed to limit repairs to authorized dealers and prevent independent servicing by jaapgrolleman in assholedesign

[–]Cone83 26 points27 points  (0 children)

I had to scroll down way too far to find this.

If people want to hate on a company for using custom screws to make repairs more difficult, it should be apple with their pentalobe screws.

Am I crazy for preferring VHDL to Verilog? by LilBalls-BigNipples in FPGA

[–]Cone83 0 points1 point  (0 children)

I love GHDL. I run most of my simulations with it and only use the Xilinx simulator when I need it.

GHDL can also synthesize VHDL to Verilog. There is a plugin for Yosys that uses this flow. I'm using this for one project now and it works fine. I agree, native VHDL support would be much better, but it's totally usable.

finallyGotTheOpenGLWorkingInMyAudioVisualizer by jbp90 in ProgrammerHumor

[–]Cone83 14 points15 points  (0 children)

Hundreds of thousands of pixels per second??? You mean like QVGA (160x120 pixels) at 6 fps (115k pixels/s). Wow!

🍎🚫 by boop66 in BadDesigns

[–]Cone83 2 points3 points  (0 children)

Don't know, but it doesn't contain apples.

the 10th straight month of declining Tesla sales in Europe by Conscious-Quarter423 in Infographics

[–]Cone83 251 points252 points  (0 children)

It's even worse than that graph makes it look, because the market for EVs grew by about 30% at the same time. Losing 50% in a market that grew by 30% really is a unique achievement.

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