Activity for Lorenzo Donati
| Type | On... | Excerpt | Status | Date |
|---|---|---|---|---|
| Comment | Post #289423 |
@#8176 Yep, I had got your point, but I thought the example wasn't appropriate, because I think PID (as Process ID) is not off topic on EE. EE also encompasses telecommunications and real time systems, so I could well imagine, in a context of a question about a RTOS, people asking something related t... (more) |
— | 9 months ago |
| Comment | Post #289421 |
Acknowledged! Thanks! (more) |
— | 9 months ago |
| Comment | Post #289421 |
Thank you! Excellent summarization. (more) |
— | 9 months ago |
| Comment | Post #289417 |
I completely agree.
In particular, for MCUs, the general architecture like `AVR` or `PIC` (or STM? is that a known designation for a general architecture of ST MCUs? I don't know), can be a good starting point under the MCU tag (people may be searching for questions about a general architecture). ... (more) |
— | 9 months ago |
| Comment | Post #289348 |
@#8176 I can see your concern about having an explosion of tags like `relay-coil-voltages`, but that's why tag curation is important to identify "too-specific" tags. In my "semantic tag" view a tag should have the right to exist if it is specific enough to identify a *reasonably defined* area of expe... (more) |
— | 9 months ago |
| Comment | Post #289348 |
@#8176 But see, `int const *` _is_ the same type as `const int *` (due to a quirk of the C grammar), so you have a blatant visual ambiguity, which is resolved *behind the scenes* by a semantic rule. A person not knowing the grammar faced with the three alternatives `int const *`, `const int *` and `i... (more) |
— | 9 months ago |
| Comment | Post #289348 |
@#8176 What if you would want to convey the meaning of `coil-voltage` and `capacitor-current` in the same post? You would use the tags `coil`, `voltage`, `capacitor`, `current`. But there is no mechanism that guarantees the tags will be always displayed that way (Maybe devs will decide tags will be d... (more) |
— | 9 months ago |
| Comment | Post #289348 |
@#8176 *"[...] such tags might give the post a meaning in combination with other tags."*
Here I strongly disagree. I see your POV of as "keywords" instead of as "semantic links" (my view). But there is a big problem when you say "in combination with other tags". In the current tag system there is ... (more) |
— | 9 months ago |
| Comment | Post #289348 |
@#8176 First of all, thanks for your feedback.
*"I think we have to live with on-topic tags that hold no meaning [...] But also we should not make it harder to change tags than to invent them. If we allow everyone and their mother to create tags, which is usually the case, I don't think we can re... (more) |
— | 9 months ago |
| Comment | Post #289348 |
@#56656 Sadly it's not possible for a user making an edit to avoid that "bump". There are discussions in CD.META to implement a checkbox to do that, but it's not there.
I think only devs can change things without bumping the question.
A workaround is to sort the questions by age, so you see them in... (more) |
— | 9 months ago |
| Comment | Post #289348 |
@#8046 After I read your comment I realized *I did do* a mistake: I got the title of the post wrong (sorry for that). As you note, I said "capitalization change", whereas I also proposed deletion.
Thinking about it, I can recollect the genesis of that title. I just wanted to ask for capitalizatio... (more) |
— | 9 months ago |
| Comment | Post #289348 |
@#8046 Thanks for your words, I really appreciate them. As for your proposal, that's OK for me. Do perform just the capitalization changes, they are needed anyway. Although it's the other tags deletion/merging that would allow me continue reorganizing the existing tags (some of those would have been ... (more) |
— | 9 months ago |
| Comment | Post #289348 |
@#8046
As for the objection (D), sorry, definitely no: I'm *not* going to spend time correcting issues with any single post I retag. Some of those posts shouldn't even exist. BTW, I don't think there's a rule like on SE that mandates an edit being necessarily complete (maybe I missed that somewher... (more) |
— | 9 months ago |
| Comment | Post #289348 |
@#8046
On the basis of that inference I put some effort into changing the status quo (objection B), a situation that was incredibly depressing: before I began my work the tags page had ***not even one*** guideline text, WIKI, synonym or parent. ***At all***. What I got from that was that (non excl... (more) |
— | 9 months ago |
| Comment | Post #289348 |
@#8046
What I could add now is that objection (A) is not warranted: [_I did_ ask the community](https://electrical.codidact.com/posts/289204) about (1) tag guidelines (proposed by me) and (2) interpretation of the tags feature (at the end of my post). I received *no* objection at all, even from Lu... (more) |
— | 9 months ago |
| Comment | Post #289348 |
@#8046 Frankly, **I don't know how to proceed**. The only [explicit disagreement is from high-rep user @#8176](https://electrical.codidact.com/posts/289348/289363#answer-289363), to the objections of whom I replied with my edit, at least mostly. ***They didn't reply in turn, yet.***
I identify es... (more) |
— | 9 months ago |
| Comment | Post #289363 |
@#8176 Please, see the edit in my question for a response. (more) |
— | 9 months ago |
| Comment | Post #289349 |
@#8082 List of changes added to my question. Waiting for it to be applied. Thanks! (more) |
— | 9 months ago |
| Comment | Post #289345 |
Please, read the help to understand how this site works. This is not a forum. You can't simply post a question like this. A question cannot be made up just of links. It must stand on its own feet. Provide all the information needed to understand the question ***in the question itself***. Links are OK... (more) |
— | 9 months ago |
| Comment | Post #289343 |
@#8045 It seems you missed a couple: `Circuit`, `differntial` (a typo), and `binary`. (more) |
— | 9 months ago |
| Comment | Post #289343 |
Thanks a lot!!!!! (more) |
— | 9 months ago |
| Comment | Post #289090 |
@#64505 Statistically speaking, yes. But 1000 samples are too few to have that precision (99.7 is 3 significant figures), so you may well end up with 10 samples outside that range (or none). Take a million samples and you probably will have a *relative frequency* that matches that *probability* to 3 ... (more) |
— | 9 months ago |
| Comment | Post #289284 |
You are definitely right about units. I was planning to edit my post just yesterday adding an additional exception rule for units. After all, according to SI, uppercase units are those derived from people's name, so in the end it would largely fall under one of the rule I already stated. Anyway, it w... (more) |
— | 9 months ago |
| Comment | Post #289285 |
I agree in principle, but there may be technical issues. I don't know much about modern HTML/web programming, but I've already seen problems in handling HTML entities, and also here on codidact. I fear that allowing entering arbitrary HTML entities could lead to problems. As a minimum we would need a... (more) |
— | 9 months ago |
| Comment | Post #289280 |
I agree with your rationale behind differentiating between voltage and current (that's important in many different context). I think in most places you can do that using more specific tags. E.g. `current-loop`, `ground-loop`, `ground-bounce`, `4-20mA-loop`.
I'm trying to understand whether we cou... (more) |
— | 9 months ago |
| Comment | Post #285170 |
@#36396 "I've got several ideas for papers, but it's hard to take the time." You could post in meta a question where you suggest the topics you think will be interesting. If you can't write a paper or a self-answered question, maybe someone else could.
This could also motivate some users to do som... (more) |
— | 9 months ago |
| Comment | Post #276200 |
@#52987 My compliments for your drawing skills, then! Especially for that axonometric plot. (more) |
— | 9 months ago |
| Comment | Post #289205 |
Please, edit your question inserting the part number of those chips directly in the text, and maybe add a short excerpt of the datasheet.
As it stands if the links you provided breaks, your question will be quite useless for other people. (more) |
— | 9 months ago |
| Comment | Post #289204 |
@#36396, @#8046 Thanks! (more) |
— | 9 months ago |
| Comment | Post #276200 |
@#52987 May I ask you which software did you use for making that drawings and plots? (more) |
— | 9 months ago |
| Comment | Post #276306 |
@#36396 OK, but there is no clear grammatical link to the previous sentences (firmware or execution is not mentioned in the previous test).
Maybe it's because I'm not a native English speaker, but rereading that part I can't completely understand it from the words alone. As I said, I got perfectl... (more) |
— | 9 months ago |
| Comment | Post #276306 |
Hi Olin! Great answer, BTW! I think there is a problem with this sentence ` If not, it stays in the bootloader constantly requesting a upload until something with a valid checksum gets loaded into memory. `
The general meaning is clear but the sentence seems weird. What "stays in the bootloader"... (more) |
— | 9 months ago |
| Comment | Post #276295 |
@#52987 BTW, I notice now the link to that calculator is broken. (more) |
— | 9 months ago |
| Comment | Post #276295 |
@#52987 Great! This has bothered me for a long time. I always suspected there there was some kind of exponential relationship between rated lifetime and actual lifetime wrt. temperature, but never found a source. Also good the relationship with actual working voltage (didn't know that at all).
All... (more) |
— | 9 months ago |
| Comment | Post #288246 |
Please, post better images. The details in your drawings are barely visible. (more) |
— | 9 months ago |
| Comment | Post #289161 |
@#36396 Yep! Thanks for the nudge, anyway. I will keep papers in mind in the future if I come up with something more structured and the time to write it. (more) |
— | 9 months ago |
| Comment | Post #277090 |
@#53110 The one with the Zener won't work either. Even if you used a very low voltage Zener, or a couple of series-connected rectifiers, you would have at least 0.7V across R1, which means 2.6V to be shared between the LED and the CE terminals of Q1. Since this latter needs to be in its active region... (more) |
— | 9 months ago |
| Comment | Post #277090 |
@#53110 Although the circuits you post are nice, they won't work with such a low voltage as supply. They won't have enough compliance.
In particular your circuit with the TL431 can't work. You are trying to put the BE junction of the BJT into the control loop of the TL431 to get 2.5V at the emitt... (more) |
— | 9 months ago |
| Comment | Post #289161 |
@#36396 Thanks for your words. I really didn't think of papers. I was trying to write something for the wiki of the dynamic-resistance tag and it went "out of hands" quickly. So I thought to a "canonic" q&a.
Unfortunately I have no extra time to make good graphs (they are really time-wasters, at ... (more) |
— | 9 months ago |
| Comment | Post #277272 |
@#36396 Just a curiosity: what's the software you use for the schematics you post? They are quite neat. I usually refrain from posting many schematics because the only software I have that lets me draw the schematic quickly is LTspice, but from a graphical POV their appearance is a bit ugly. (more) |
— | 9 months ago |
| Comment | Post #281307 |
I totally agree on the general content of your answer. However I object on your final statement "Trying to split hairs about what they maybe should have called these pins is pointless". It seems you are trying to dismiss the OP concerns about "are NC pins actually NC?" and that's where I don't agree.... (more) |
— | 9 months ago |
| Comment | Post #282151 |
The image of the website that shows a step-down DC-DC converter doesn't seem to be that of an *inductorless* converter, as you hint in the text of your post. That big gray square thing with that 100 printed on it seems just a 100μH inductor to me. (more) |
— | 9 months ago |
| Comment | Post #288971 |
@#36396 BTW, Interesting the hint of using pots instead of fixed resistors. Maybe is there a slightly more complex setup or a different technique that allows (maybe with more complicated math) to use shorter cables?
Math with complex numbers is OK(-ish), since it can be implemented in a spreadshe... (more) |
— | 10 months ago |
| Comment | Post #288971 |
@#36396 Thank you very much for your detailed explanation!
The only problem is the length of the cable. We don't have so much cable at school (essentially we would use scraps from various installations or old instruments, which often are between 80cm and 1.5m in length – typical example is ... (more) |
— | 10 months ago |
| Comment | Post #288641 |
@#52935 BTW, sometimes commercial products can be incredibly sturdy, despite their price tag. I still use a Logitech wireless keyboard purchased more than *at least* 18 years ago! I use it daily and the silkscreen on the keys has not worn off a bit, despite the plastic having become a bit glossy from... (more) |
— | 10 months ago |
| Comment | Post #288641 |
@#52935 Hi Nick! I understand your concerns, but again, the smoke that may cloud non-technical people vision in a general news forum should not affect us. We are not flooded with questions or answers, so we have no problems of dumb answers given by some random guy who just want to post some opinionat... (more) |
— | 10 months ago |
| Comment | Post #288641 |
@#52935 I'm definitely with Olin here. This site is about education and the willingness to learn. The fact that a curiosity was prompted by the news is irrelevant. The question should be based on its own merit, and Olin has already stated those. There is no shame for a newbie or a non specialist to a... (more) |
— | 10 months ago |
| Comment | Post #286121 |
Very nice breakdown. A good reference to keep around, especially for newbie people that lack the experience for guessing MISRA-C (and other guidelines for embedded) rationale. (more) |
— | 10 months ago |
| Comment | Post #283265 |
Bottom line: **never use XOR gates with more than 2 inputs if you want to avoid misunderstandings**. Even if you place a big caveat in the design notes or even on the schematic, chances are someone will miss it and guess the wrong semantics for that gate. In some situations this will ruin someone's d... (more) |
— | over 2 years ago |
| Comment | Post #282848 |
OK, no problem. I value your opinion. I have no strong feelings about those disclaimers, anyway. (more) |
— | almost 3 years ago |