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I've been learning about HDI recently, especially when it comes to via options. Here are some links that might help you:
https://www.4pcb.com/blog/how-blind-and-buried-vias-are-used/
https://camptechii.com/what-you-need-to-know-about-blind-vias/...
Hi, I'm designing a 6-layer PCB with blind vias going from L1 to L5, and L2 to L6. One option the fabricator is offering is to stack microvias. Is this more reliable than using one microvia and a staggered buried via? The holes are 8 mil. I found whitepapers on the reliability of 2, 3 and 4...
Hi, I'm designing a 6-layer PCB with blind vias going from L1 to L5, and L2 to L6. One option the fabricator is offering is to use a microvia combined with a buried via to create the blind via. I understand that staggering the holes is important for reliability. How much center to center...
Re: Mixed ground planes:
Hello,
This is a good idea, I'll think about it on my real design.
Or is it better to have the lower value ("fastest" cap) near my electronics parts...?
This is only an exercise I made to test my understanding. I quickly added an ADC to get some comments about...
Mixed ground planes:
Hello,
I'm working on the redesign of a noisy BLDC motor driver. On the same board we have sensitive analog (strain gauge, ADC, etc.), a micro-controller and power MOSFETs. To have a good noise immunity, I want to separate my power and ground planes. I read a lot about...
display orcad
Hello!
I installed OrCAD on a real PC: Q6600 Quad Core, 3 Gb of RAM, FX570 video card, XP 32 Bit SP3.
It's working perfectly! It went from 2-3s to refresh to 0.1s!
orcad 64 bit
Hello everybody,
I'm using OrCAD Layout 16.2 for a project. The board is 9*9cm, 2 faces. Since I added a copper pour on both faces, Layout is painfully slow. Every zoom-in or -out is taking about 2 or 3 seconds to refresh the display.
I'm working on a HP Touchsmart with a...
layout plus autoeco
Hello,
Thanks for your help. I was able to update my design without loosing my traces. However, I can't obtain an universal net 0. I can only get my ex-GND net to be renamed 0_3010... any clue?
orcad layout update netlist
Hello,
I'm using OrCAD for the first time. After a few days of doing tutorials, reading books and documentation and experimenting, I'm able to do most of what I want and I start to like this software.
However, I have a small problem that I don't know how to fix...
18f2455 48mhz crystal
Hello,
Note: This was initially posted on Microchip Forums but for the moment I get no solution so I'm trying here. For reference: **broken link removed**
I'm using a 18F2455 with a 4MHz crystal. My configuration is the following:
#pragma config PLLDIV = 1, CPUDIV =...
elm327 pic
Hello,
I'm currently developping a product that will be used by people that are not really good with technology. My compagny want those customers to be able to reprogram the device if we do a software update.
I'm thinking of using a serial (RS-232) bootloader to flash it, but it...
Hello,
I need a product that can send pre-recorded voice messages by telephone. It should memorize something like 10 short messages and a few telephone numbers.
It's to be integrated in a commercial product, so a small OEM module would be perfect.
Any product suggestion?
Thanks in advance,
Hello,
When I need to prepare a C program, I like to write a basic flowchart of the functionment. One of my teacher is arguing my that it's old-school and that Grafcet is more actual and powerful.
I find Grafcet slower and less efficient to use in many situations. I would like to know what...
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