@ThePhoton never mind

Hmpf, why is it so hard to find pvc pipes with 32mm outside diameter around here...

Hello....

I have 1 doubt.

In this question, Input is given as Sine wave of 1KHz and need to find Voltage across the resistor using Voltage divider rule. So, my doubt is, if the input is given in Volts rather than frequency I could solve it. But, here only frequency is given, so without Peak voltage how can we calculate?

I mean, to use voltage divider rule we must know input voltage which we have to substitute in the formula. And I guess that user has forgot to mention.

@KrishnShweta I think whoever posted that meant to put a DC voltage source there. It really doesn't matter, though. To solve the problem, you can work with variables. Once you've solved the equations, you can put any voltage you want into them, and get the correct answer. You can even use a sine wave as input, and get the voltage on the specified resistor for any point in the sine wave. The question is really about how to solve the problem, and not so much about what the voltage really is.

@JRE Yes that's true. I have solved sort of questions but never with sine wave. And as you said I can work with variables. I know that procedure so I'll go with that. Thanks :-)

@PlasmaHH That's simple. I bought it all up and made hula hoops out of it. Those that I didn't make into spaghetti, that is.

@JRE that actually makes sense

Anyone experienced with pools? What is the best way to reduce ph? Pool grade HCl?

@PlasmaHH You have no Hornbach near?

They have all sizes in NL, and I'd assume the stock comes from DE

@Asmyldof Yippiejaja-yippie-yippie-yeah

@Asmyldof they have all usual sizes used in plumbing etc. But 32mm seems to not be used anywhere

I'm confused about I2C modules, is there anyone who can clarify something for me?

actually let me rubber duck it some more, I'm not even sure how to formulate it

@PlasmaHH I have been to three Hornbachs in NL the last 12 months and all have 20, 32, 40, 50, 60, etc

Maybe they get it directly from Martens NL or something, because they make basically any size

the UMLet (my favourite quick UML'ing tool) people have more toys it seems:

montecarlito.com

@Asmyldof I will try another one today, need sulfuric acid for the pool too, maybe the one. I was in had reduced set. We have quite many similar stores around

@PlasmaHH Normally people just liberate or flush fish

@Asmyldof who is "normal" ...

@PlasmaHH Zuck Sabber Wisch I am. Aren't I

@Asmyldof marketing logic... 32mm is used for special pressure sewage installations, so it is kept in a separate area in the market.

@PlasmaHH Marketing logic: Put things in as many unrelated places as possible in the hopes that the customer will discover something else to buy while trying to find the thing he came to get.

Which often backfires. If I can't find it and can't get someone to show me where it is, I leave and buy it somewhere else.

Or order it online. The main reason for lots of things in order online is not mainly because it's cheaper, but because I can actually find and select stuff

@JRE they seem to have a similar logic when it comes to "forgetting" to label the price

McMaster Carr is the best example of a web store making a much better online catalog than a physical store

@W5VO Their paper catalog is better still.

@PlasmaHH No it isn't. Which is why, here, it isn't.

The racks here almost always go: 20, 32, 40, 50, 60, etc. Side by side.

And then 16/22 is electrical in a different place

Going home time!

@NickAlexeev It's harder to download STEP files from the paper catalog.

@Asmyldof Atmel question for you .... Are the schematics for the XPlained boards published anywhere?

@ThePhoton Yes, but it's easier to find "that thing... have no idea what it's called... you know what i mean..." in a paper catalog than on a web site.

At the same time, McMaster has a nice front page with thumbnails, which somewhat helps find parts without knowing terminology.

@Asmyldof here one rack starts at 40 and again another place there is a rack going til 26 and two isles down is a 200 tube cable tied to a rack where they have 32mm tubes inside and the rack contains sewage pump/toilet combo installations and all kinds of accessories

I have another FPGA question. Specifically for the Lattice MachOX2 and VHDL (though I guess this could apply to other FPGAs with EFBs). How do I access the build in (EFB) SPI port? I was reading some Verilog based examples (though I don't know Verilog yet) and it seams you use a register address.

@BrandenBoucher Sorry, not enough Lattice experience to even know what "SPI" stands for.

If you copy in the Verilog example I may be able to decipher it.

Serial Peripheral Interface. Not really an FPGA or Lattice thing. Just a standard hardware communications protocol. All good though. I'll try to grab that code (last time I tried, I couldn't download it directly at work).

@ThePhoton Not often

They do regularly feature SPI Flash though, so be careful

@JRE I'm sorry for wasting your time. Before asking that question, I would have wait for some time... And @all whoever tried to clear my doubt, I wasted your times. So, I'm sorry.

@Asmyldof rats. Where am I supposed to get my dumb questions answered without having to think too hard about them.

@ThePhoton The dumber the question, the higher my rate. You have my e-mail

@KrishnShweta No need to apologize. I didn't take it as a waste of time, and answering was no burden. I had pretty much forgotten about it until you started apologizing. Relax . The folks here are not shy. If you get on someone's nerves, they'll let you know.

@JRE Thanks for making me feel free. Actually it happened twice, so I was feeling bad.

@JRE in about an hour the second bottle is going to get it!

@Asmyldof I hope its as good as my co- workers claim.

Enjoy your evening.

I will. It'll be a short reprieve along side a decent but quick dinner, to fully happify before diving back into the "shit shit shit"

:-)

We've got beautiful weather here. Just finished supper the family outside on the patio.

We have good weather too, but haven't really seen much of it

Going back in --->

Does anybody actually use "rooms" when doing layout in Altium?

anyone on here use verilog and FPGAs and able to give a few small hints/answer a basic question or two?

@ThePhoton yes, i've used rooms for laying out duplicates of a particular circuit

I had 16 functionally identical high power LED constant current circuits which I used in a "channel" style design in Altium as well, which was cool. I routed one room, and copied the routing to all other 15 rooms for that channel instantly, then you can just move them around and rotate them as needed to connect to main power bus traces etc

@ThePhoton Yes, although rooms get in the way sometimes, especially in the beginning of the layout process.

@NickAlexeev @ThePhoton When used properly rooms help you speed up significantly at most stages. But you need to do it wrong one or two times first, before you set up your schematic for it to work

You "class" your schematic in a proper hierarchy and you can quickly set-up small parts, if you set up room copy and drag behaviour right you can then position the rooms and possibly even interconnect them with room-copy operations.

It's been a way for me to properly fit designs into the most insane kinds of board sizes and shapes without spending weeks doing and re-doing

I just realized that Altium has FPGA stuff built into it too, that would be handy for me right now, pity my current employer doesn't have it :(

@KyranF Yeah, I just generally get frustrated with stuff like whenever I try to select multiple parts it grabs the room object instead...

@KyranF I did a channelized design once in Boardstation...worked okay. But that's an even more expensive tool than Altium.

With not much added functionality except "our company has 10's of 1000's of parts in our library for Boardstation and not for Altium".

yeah.. library is a big thing

the man-hours to move over to a new CAD system becomes worse and worse as you get more and more invested in one

during an internship I once wrote a C# based windows program that parses and combines (while also renaming into something more searchable/useful) huge swathes of SPICE libraries into a form that Altium can just import as a .lib file and you can attach spice models to components etc.

I think my program ended up processing tens of thousands of manufacturer-provided SPICE models for capacitors, inductors, diodes, fets, etc

Anyone notice that PlasmaHH says the most interesting things around here? Good guy PlasmaHH.