Thomas Weller

general recent conversations

Discussion on question by alphabet: I…

Imported from a comment discussion on english.stackexchange.co...

Thomas Weller

Sep 23, 2023 07:53

Is "is X grammatical" grammatically correct?

$TeX - LaTeX$ TeX, LaTeX and Friends

\begin{chat}

Thomas Weller

Jun 27, 2023 09:48

Thanks everyone. I'll not use the # notation and go for $N_$ instead. Looks much more scientific now :-)

Thomas Weller

Jun 27, 2023 07:25

@Rmano: thanks for that. It is for non-English speakers

Thomas Weller

Jun 27, 2023 07:21

Most Google results are for counting pages or paragraphs or elements in TeX, which is not what I need.

Thomas Weller

Jun 27, 2023 07:20

@mickep thanks. Currently I don't even know a search term I would use for #. Google is not particularly good when it comes to special characters. Also "count" and "number of" give search results that don't fit

Thomas Weller

Jun 27, 2023 07:19

Maybe #cups * volume = total volume would be a better example.

Thomas Weller

Jun 27, 2023 07:16

My question is: when typesetting a formula, how would I express "number of features" multiplied by "number of sizes"?
Would #features * #sizes be used? If so, how would it be formatted?

Thomas Weller

Jun 27, 2023 07:14

Hi. I don't see much of a usage description for this room, so I presume this is a general purpose chat.

Discussion on question by FieldDesign…

Imported from a comment discussion on workplace.stackexchange....

Thomas Weller

Jun 21, 2023 20:31

PIP - that one fails for me often as well. I never got fired because of that, though.

Discussion on question by Thomas Well…

Imported from a comment discussion on arduino.stackexchange.co...

Thomas Weller

Mar 9, 2023 06:22

I see that this Q&A has an answer mentioning to hold the Reset button. That files under the category "Watchdog timer problems". This doesn't exactly sound like "TTL serial chip has a problem".

Thomas Weller

Mar 9, 2023 06:22

@Juraj: I left the rooms ~1 hour ago, sorry. I don't know the exact chip, but I can tell that it needs the Holtek UART Bridge USB driver and identifies as Vendor ID 04D9, Product ID B534

Thomas Weller

Mar 9, 2023 06:22

@Juraj: I'm willing to accept this as a hardware issue. Is there a duplicate that we could close this question or do you want to post an answer?

Thomas Weller

Mar 9, 2023 06:22

@datenheim: I answered it in the comments already and now put it into the question: it's Elegoo Smart Robot Car Kit 3.0 Plus

Thomas Weller

Mar 9, 2023 06:22

@Juraj: holy cow... I'm programming with these kids since 2018 and we never had this issue yet, although we use Serial output in almost every sketch. And these kids really try everything, including baud rates up to 2000000. We never had to hold reset before. But your method works in ~9 out of 10 cases. I can't believe this.

Thomas Weller

Mar 9, 2023 06:22

@jsotola: that command line makes the unbricking process a bit faster. Thanks

Thomas Weller

Mar 9, 2023 06:22

@jsotola: I can certainly try a lot of things. Honestly, I don't want to program by coincidence and have a fix which works accidentally. Why and how would this affect anything, except for an obvious delay?

Thomas Weller

Mar 9, 2023 06:22

@Bra1n: thank you. Currently I only have access to 9 of these robots and no other Arduinos. They are all affected. They are all of the same type, bought at the same time, so it's possible that they all have the same hardware bug.

Thomas Weller

Mar 9, 2023 06:22

@6v6gt: sure, the Arduino reference says "If the pin isn’t connected to anything, digitalRead() can return either HIGH or LOW (and this can change randomly).". This is called a "floating pin". But that should not be C++ Undefined Behavior, right? It still has defined behavior, just not predictable.

Thomas Weller

Mar 9, 2023 06:22

@Bra1n: yes, I unplugged the Robot shield.

Thomas Weller

Mar 9, 2023 06:22

@Bra1n: yes, that's basically what happens. It's not possible to upload this sketch any more and it takes 8 steps to upload an empty sketch.

Winter / Summer Bash 2022

Hat hunting and general discussion about winterbash2022.stacke...

Thomas Weller

Dec 17, 2022 09:52

Oh, these posts are on meta.SE, not meta.SO ... now I know why I didn't find anything about them. Thanks!

Thomas Weller

Dec 17, 2022 09:50

I got the "Back in my day" hat (which I'm currently wearing) and I think it might be achieved by self-answering a question.

Thomas Weller

Dec 17, 2022 09:47

Is it appreciated if we discuss secret hats here, probably revealing their criteria of achievement?

Winter Bash 2022

Questions about the winter Bash and Hats

Thomas Weller

Dec 16, 2022 22:09

Is it appreciated if we discuss secret hats here, probably revealing their criteria of achievement?

Discussion on question by Ahmed Diab:…

Imported from a comment discussion on codereview.stackexchange...

Thomas Weller

Aug 25, 2022 13:10

There are performance measurements described in the paper, but it's unclear to me how these measurements were carried out: which optimization, which compiler, which hardware (CPU, cache, RAM)? Eric Lippert described benchmarking mistakes. So many things can go wrong while measuring. When reading the paper, I liked to be certain that you didn't make any benchmarking mistakes. ericlippert.com/2013/05/14/benchmarking-mistakes-part-one Printing during the measurement is not good, since the console is synchronized (and makes a difference at least for multithreaded programs)

Discussion on question by Samara Itan…

Imported from a comment discussion on parenting.stackexchange....

Thomas Weller

Jun 21, 2022 23:42

I generally feel that the age recommendations on Lego stuff is about twice as high as it should be. But hey, it makes all kids feel happy, so why not. My son has completed the set 42055 at the age of 8. Is he talented? I don't think so.

The DMZ

A serious place where infosec is discussed PS we don't do hard...

Thomas Weller

Apr 13, 2022 08:12

Thanks for your feedback, everyone. Have a nice day.

Thomas Weller

Apr 13, 2022 08:12

@fenixleon: ok, thanks. I will just enter it like that. Someone else will need to do a review and an evaluation anyway. I just don't like to be straight wrong ;-)

Thomas Weller

Apr 13, 2022 08:02

@nobody: that's something I don't know and can't judge about. It's about time accounting information. Actually I have access to that information for the current month, i.e. when I enter the data. On the last day of the month, I could save the information and thus keep an archive myself. So, basically it's information I already knew about and it's just a question of what I can remember or not.

Thomas Weller

Apr 13, 2022 07:59

@fenixleon: yes, that sounds plausible. Like M4: Unintended Data Leakage
https://owasp.org/www-project-mobile-top-10/2014-risks/m4-unintended-data-leakage

Thomas Weller

Apr 13, 2022 07:51

@nobody: actually I have 2 issues. One is about others, that is probably A01:2021-Broken Access Control
The second is just information about myself, but to which I don't have access using links provided by the web app itself.

Thomas Weller

Apr 13, 2022 07:34

Hello everybody. Say I have a web application where I can access personal information about myself. There are links to go to the past 2 months. However, maniuplating URL parameters, I can access all time information. Which security risk category would that be?

Thomas Weller

Dec 19, 2021 16:53

Thanks for all the resources. I'll see how far I get. The application in question is x64 on Windows, so probably a bit more advanced.

Thomas Weller

Dec 19, 2021 16:14

@MechMK1: I'm quite good at debugging and I use WinDbg regularly. Which "the basic examples" would you recommend? I'm willing to go through these.

Thomas Weller

Dec 18, 2021 22:55

Hello everyone. I have an application which has a buffer overflow. It looks like a 255 byte buffer on the stack with 512 bytes written to it. I can see my text input on the stack. It also works with binary 0x90 (nop) in the clipboard. How would I proceed from here in order to run calc.exe? Would this make a good question on SE or does someone in chat simply have a good link on this topic?

Discussion on question by Asish: Mana…

Imported from a comment discussion on workplace.stackexchange....

Thomas Weller

Mar 17, 2022 18:23

PHP does not use OOP? At least you can implement your stuff using OOP, can't you?

The Nineteenth Byte

The Nineteenth Byte: General discussion for codegolf.stackexc...

210

Thomas Weller

Dec 18, 2021 22:47

Is it expected that the author implements challenges himself before posting them? E.g. checking all the test cases against an implementation (potentially ungolfed).

Thomas Weller

Dec 18, 2021 21:02

Hey guys, you're so awesome. You have automatic notifications about sandbox posts. Cool! I was inactive here for a long time and have not followed the new meta rules, so I think I need some feedback on my challenge. Thank you!

Electrical Engineering

A place to talk with friends from the EE community about vacuu...

Thomas Weller

Oct 21, 2021 21:57

Good suggestion. I'll solder it off tomorrow.

Thomas Weller

Oct 21, 2021 21:56

Thanks. It's from a dish washer. Not more than 230 V

Thomas Weller

Oct 21, 2021 21:23

What resistor value could that have been?

Thomas Weller

Oct 21, 2021 21:23

Thomas Weller

Oct 21, 2021 21:22

Hi everyone.

Thomas Weller

Sep 28, 2021 14:10

I didn't contact them yet, but I can do. Thanks.

Thomas Weller

Sep 28, 2021 13:57

I attempted to download Rigol MSO5000 firmware from rigolna.com/firmware. There is a link for that model's firmware v 01.03.00.01, which is beyondmeasure.rigoltech.com/acton/ct/1579/p-00ac/Bct/-/-/ct19_0/… However, the file it downloads is named MSO5_FW_V1_1_4_4.zip Yet, the release notes contained inside mention v00.01.03.00.01 Is this a known file name issue?

Thomas Weller

Sep 28, 2021 13:52

Hello.