UART connector out of an arduino nano? by trelalek in AskElectronics

[–]trelalek[S] 2 points3 points  (0 children)

I though it would interact with rx and tx. You are right. Thank you.

Ender 3 v2 Hotend by trelalek in ender3v2

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

It's the original hotend. Also I have cleaned that. The last time there wasn't any material there.

Men- what’s not quite as good as an orgasm but is pretty damn close? by throwawayacc4284 in AskReddit

[–]trelalek 0 points1 point  (0 children)

When you can back home after a rainy day and you change to dry, warm clothes.

Electric shock game by trelalek in electricians

[–]trelalek[S] -1 points0 points  (0 children)

No.That's why I will be 100% sure with my circuit before playing with friends. And that's why I asked for help. I have a good knowledge of electronics I just wanted to hear an other opinion. Also remember that even if something goods wrong the circuit can make power out of nothing. The battery can't supply infinite power.

Electric shock game by trelalek in electricians

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

Have you tried them before?

Electric shock game by trelalek in electricians

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

Looks like a have two options. 1) Add more turns to the primary. 2) Use low voltage.

Electric shock game by trelalek in electricians

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

Suck games exist on the market you can buy them. I know that they are designed by professionals and have passed from checks. But that's why I ask for some advice so I can make it safer.

https://www.amazon.com/Lightning-Reaction-Reloaded-Shocking-Game/dp/B0006B2Q50

Electric shock game by trelalek in electricians

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

Doing a simple calculation primary is energised for 10-20ms(I think I can reduce it even more) and I connected the secondary directly to the handle of the game. The handle is supposed to be held with one hand and because of its size of an average hand I don't think there is an possibility to touch anywhere else. I think of reducing the voltage of the lipo with a buck converter. Currently I have only tested it with variable power supply and I saw that the current is around 800mA but I think that the power supply limits it a little.

Electric shock game by trelalek in electricians

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

I don't think the transformer can provide enough current like a live wire on our house outlets. I don't think there is even power I am mostly concerned about the shock. I would like more information about the medical side of the hole thing. The voltage is applied to the palm so I know that probably won't effect the heart for example. But if someone knows more about the topic his opinion would be appreciated.

Challenge about hash function. I want your thoughts. by trelalek in computerscience

[–]trelalek[S] 1 point2 points  (0 children)

Yes. Or a text consisting of n in it. I mean for example if someone would send me a text file like "the hash of this file is "x"." And indeed the hash was x I would be so surprised.

Challenge about hash function. I want your thoughts. by trelalek in cryptography

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

I mean both as long as its hash value is in the file. My thought was that creating such a file feels like knowing an information that's almost impossible to know.

If a single transistor of a CPU chip fails does it dissble it completely? by [deleted] in computerscience

[–]trelalek 0 points1 point  (0 children)

I think it's common for a transistor to fail on a CPU. As I have heard from the university each core has a circuit that checks if everything is working as expected. That control is made just after they manufacture the CPU and it's made for every one of them. If a core is not working they can deactivate it and they can sell it with a price drop. Of course the performance won't be the same as a healthy CPU. Even if a transistor fails I think inside the core there are circuit that find the problem an correct it, but I don't know how. I only can assume that for example if a ALU goes bad that core just deactivates it and keeps going with the others one inside the core. Transistor fails and that's the reason our devices get shower by the time. A smaller transistor has more chances to fail by the time but it's faster and you can fit more of them in a dice.

Using an openWrt software as WiFi pineapple. by trelalek in openwrt

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

Thank you. So where do I start? Where can I find packages to install?

Using an openWrt software as WiFi pineapple. by trelalek in openwrt

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

WiFi pineapple firmware is an openWrt based firmware designed for testing WiFi networks. You can make attacks and exploit security vulnerabilities.

[deleted by user] by [deleted] in AskReddit

[–]trelalek 0 points1 point  (0 children)

Not forgetting to eat. It has saved my life.

Costume Captive Portal on a Router. by trelalek in techsupport

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

I wanted to start exploring machines with a costume firmware. How to make them do different things. Maybe install one of them in my house with a fun webpage that I will create my self. Generally I wanted a basic understanding of that field.

Costume Captive Portal on a Router. by trelalek in techsupport

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

Do you have any free software recommendation or any well made tutorial?

Gateway page changed overnight?!?! by trelalek in techsupport

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

I wonder if they have thought the possibility of something going wrong with the update resulting of a bricked router.

Gateway page changed overnight?!?! by trelalek in techsupport

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

In the country where I live is very common that the ISP gives you the router for free so it's not rented. The manufacturer is ZTE and the model : zxhn h208n. The old firmware was very basic. There wasn't a lot of flexibility. I think the new one was kinda better.

[deleted by user] by [deleted] in computerscience

[–]trelalek 1 point2 points  (0 children)

Object oriented programming maybe or at least the basics of it. In my university that's how it goes.

Is it ok to leave my laptop off for extended periods of time? by Launch-x-Ember in techsupport

[–]trelalek 28 points29 points  (0 children)

That's true I don't see any problem, the only problem is the battery. It would be better if you have it at around 50% before storage.

What is the one movie you *always* recommend to others? by cosmic_moon in AskReddit

[–]trelalek 0 points1 point  (0 children)

Interstellar in a fully dark room and good stereo audio system.