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u/HasanTheSyrian_

r/spiders r/soldering r/FigmaDesign r/FPGA r/AskElectronics r/rfelectronics r/embedded r/buildapc r/syriangamer r/LeagueofTechSupport
▲ 2 r/soldering

DMM thermocouple cable

How heat resistant is it, it seems its made out of fabric (I have the one thats white and stripped blue) do I wrap it in Kapton where the heat gun will be? And how accurate is it? Mine is measuring the outside temperature while im inside it should be down a few degrees though its probably good enough I just want to get an idea of the PCB temperature while its on a hot plate getting finished with a hot air gun

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u/HasanTheSyrian_ — 1 day ago
▲ 0 r/buildapc

Upgrading MSI 1660Ti, R5 2600X, 4x8 DDR4 3000

I want to upgrade something in PC exclusively to get higher FPS on Deadlock (and speed up some CAD programs that I use)

As far as I know, 32GB DDR4 3000 is still very good, and I don't want to upgrade the whole thing to AM5 to pay for DDR5 prices

I think the biggest performance-to-price upgrade would be getting a 5600, its also more efficient than the 2600x so I wouldn't need a new power supply

I remember cheaping out on my SSD (EX990 M.2) which might not have on board memory.

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u/HasanTheSyrian_ — 4 days ago
▲ 1 r/embedded

Is it okay to place a 0201 0ohm 1/20W resistor in place of these inductors until they arrive? I know they are usually not necessary but PLLs are sensitive and all other reference designs have them. According to the datasheet VPHY pulls 60 mA max and I assume VPLL is the same

https://preview.redd.it/elie08hajm8h1.png?width=1069&format=png&auto=webp&s=d306ebe1ca4def753aec944737f438e903b87849

Ill probably also use high-capacitance caps for all caps which I now know is best for SMD bypass caps

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u/HasanTheSyrian_ — 16 days ago
▲ 1 r/soldering

Does IPA for flux make a difference

I always use 80% just because its what I have and its really unfun to clean so Im wondering if IPA makes a difference

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u/HasanTheSyrian_ — 23 days ago
▲ 1 r/LeagueofTechSupport

Game lagging

I have barely played this game. Maybe 10 times over the last 10 years but I have recently tried playing it again and its really laggy

I have a 1660Ti with R5 2600x which should be more than enough, I remember very well that this game used to run on literally anything

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u/HasanTheSyrian_ — 24 days ago
▲ 132 r/soldering

Soldering my big board

Hello, this is the first time I'm using a hot plate.

Im wondering what temperature to use, the paste I'm using melts at 183C so I'm wondering if I should use ~350C as if Im using solder wire or whether I should be using something like 200C since the board is getting heated evenly.

Im also wondering if I should preheat the board (to like 100C) with the hotplate and finish soldering with a hot air gun or the other way around because I have two SMD plastic connectors. If I just use the hotplate I might thermally shock the components and if I use the hot air gun it might melt the connectors. I could do the connectors by hand but I prefer not to.

I have used a wide nozzle with low air speed to solder multiple components at once with the hot air gun.

u/HasanTheSyrian_ — 1 month ago
▲ 2 r/soldering

What causes the paste to be jagged like this? It wasn't runny it was kind of like toothpaste or a bit thicker on the stencil

u/HasanTheSyrian_ — 1 month ago
▲ 4 r/soldering

How do you touch up pads on QFN packages? The straight thin soldering tip is too thick to target individual pins and the tiny amount of solder needed is on the tip radomly. Do I buy a J Tip or use solder balls or something else?

u/HasanTheSyrian_ — 1 month ago
▲ 15 r/embedded

Does it matter if the power trace is connected to the bypass capacitor first before the pin? I would guess that the current would flow through the pin, not going to the IC, when its not drawing current and charge the capacitor. Otherwise I might have to use a power plane because the pins are locked

*this is a 4 layer board, sig gnd gnd sig

u/HasanTheSyrian_ — 2 months ago
▲ 1 r/embedded

The other day I was faced with the option of having to choose between two stackups.

One stackup has thick dielectric layers (0.2mm) between sig/ref meaning the coupling would be worse and the traces @ 50/100 ohms would be thick

The other stackup has thin dielectric layers (~0.1mm) between sig/ref where the coupling would be great, and the traces would be thin

How much does it matter if the reference plane is 0.2mm (far)away but the traces have the correct width/impedance? Does signal integrity get affected?

I know there are many high frequency RF boards that use 2 layers with thick 50 ohm traces. Its easier to get the right trace width for thicker traces, they are more immune to thermal expansion and mechanical vibrations as well.

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u/HasanTheSyrian_ — 2 months ago
▲ 18 r/rfelectronics

I want to use the swra117d antenna which is designed for a 1mm PCB with a dielectric of 4.5. My manufacturer (JLC) has 2 free impedance controlled stackups the problem is that one has a dielectric of 4.4 but with thick 0.2mm dielectric layers (worse coupling, thicker traces), and the other one has a dielectric of 4.1 (>>4.5). Both stackups are 1.6mm total PCB thickness, which one should I use? I could use a chip antenna but I really would prefer a trace one

u/HasanTheSyrian_ — 2 months ago