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Engineering Thread

Brian

We really should have our own forum entirely, but I think a thread'll do.

I rather enjoy the relaxed nature of a thread derailment, but in the general public's interest, maybe we should all hang out here.

tl;dr TR032 ARE GO!

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devinejay

The assignment sheet said power and earth connections can be ignored?

mathew

devinejay wrote: »

The assignment sheet said power and earth connections can be ignored?

Same last year.. Still lost marks for it tho.. Just say what pins of the pic are connected to power/gnd..

devinejay

Well it's too late now....**insert grumbling here**

Peleus

ye the marks for the mangonel are really inconsistant. I got 91 % for the projectile without drag and in the comment he said i didnt label any of my graphs.
Then in the projectile with drag i made sure to label all my graphs and from the same corrector, I go 78% and the comment was "great work!" ??? huh???

oh and that A5 assignment was pretty stupid too. There was one light blue pin that corresponded to nothing. :O

oh well, no more assignments.

Cravo

Anyone got the solutions for Krstic's tutorials handy? ? ?

godtabh

Peleus wrote: »

ye the marks for the mangonel are really inconsistant. I got 91 % for the projectile without drag and in the comment he said i didnt label any of my graphs.
Then in the projectile with drag i made sure to label all my graphs and from the same corrector, I go 78% and the comment was "great work!" ??? huh???

oh and that A5 assignment was pretty stupid too. There was one light blue pin that corresponded to nothing. :O

oh well, no more assignments.

This year!

Boston

Peleus wrote: »

ye the marks for the mangonel are really inconsistant. I got 91 % for the projectile without drag and in the comment he said i didnt label any of my graphs.
Then in the projectile with drag i made sure to label all my graphs and from the same corrector, I go 78% and the comment was "great work!" ??? huh???

oh and that A5 assignment was pretty stupid too. There was one light blue pin that corresponded to nothing. :O

oh well, no more assignments.

A5 assignment? Probably the one I wrote, or a bastardised version of it.

Boston

TheAmateur wrote: »

I'm guessing it had something to do with a crazy fusion reactor or something...

Anyone done A5 yet? The part where it goes
is confusing me, cause as far as I can see, the first two are actual connections! Also, does the NAND IC consist of four NAND gates? Do we use them all? In our hardware handout it looks like a single AND gate, then in stage 2 of the flow chart he shows two NAND gates, and then, in the NAND IC schematic I can see four NAND gates!?!

0_o OMGz confusion.

devinejay wrote: »

I thought A5 was a terrible assignment, but I give out about everything. I Understood everything we did in the lab pretty well (like I think we did use a single AND gate) but the assignment just made it more confusing. The color coding was boll0x, why not just give us the schematics we used in the practical and let us work out once again how the circuit works instead of leaving us to blindly say "Well Pin 3 has the same color as Pins 5 and 6, I may as well connect them." Nothing is learned by that.

A) Because most of a year won't understand a schematic

You where meant to have the schematic and when I was demoing the course I emailled it out to people, so you could just straight from scratch if you wanted.
C) The handout students had was similarly colour coded, and the idea was that if you at the very least followed the colour code, you'd get most of the marks.

TheAmateur wrote: »

I hope that doesn't mean what it means.
Was I right then in thinking that those first two are actual connections? I'm pretty sure those are right, it's the whole rest of the thing I'm worried about. The hardware handout diagram looks nothing like the webct one. Of course. I mean they wouldn't want to make it any way do-able or anything...

It's a peace of piss, and if you put the circuit together or even know how it was put together originally, you'd have no problem.

mathew wrote: »

Seems to be the same this year too.. or do they take it in to account if you fail 2E10 or something..

edit: Just dug out my A5 there.. Its actually really really short..
I do remember loosing marks tho for not saying what pins were connected to the power source.

Concept problem. There was a one power pin and one earth pin, however their were also other pins connected to 5Volts. These pins did no supply power, so were no the power pins. So students assumed anything connected to 5Volts could be ignored.

Tbh, Its head wrecking that the assignment is given out in this week of term, it was meant to be handed out in Easter to allow students to do it as while they had the board in front of them.

TheAmateur

Did it look like this:

Question 1:
Explain succinctly, in fewer than 50 words per stage, each of the five stages involved in measuring the swing time of the Mangonel arm. You will receive marks for correct description of any parts of any stage. Illustration 1, figures 1 & 2 show the stages involved.
Question 2:
List the connections which must be made in stages 2, 3 and 4. Note these are the connections you made in the first and second hardware lab. Starting with the NAND IC, moving to the JK Flip-flop IC and finally the PICAXE IC itself, indicate each pin connection on a separate line.

Boston

Yep.

TheAmateur

Boston wrote: »

Its head wrecking that the assignment is given out in this week of term, it was meant to be handed out in Easter to allow students to do it as while they had the board in front of them.

Yep that sucks. But it doesn't surprise anymore. The whole 1e9 course felt thrown together in a random mess. Actually, a lot more things felt thrown together in a random mess, I'm talking labs, tutorials, important emails, details of what's required of us, etc.
I think I'm beginning to understand...

Boston

TheAmateur wrote: »

Yep that sucks. But it doesn't surprise anymore. The whole 1e9 course felt thrown together in a random mess. Actually, a lot more things felt thrown together in a random mess, I'm talking labs, tutorials, important emails, details of what's required of us, etc.
I think I'm beginning to understand...

Same thing last year.

TheAmateur

Boston wrote: »

There was a one power pin and one earth pin, however their were also other pins connected to 5Volts. These pins did no supply power, so were no the power pins. So students assumed anything connected to 5Volts could be ignored.

Sweet. I put them in after I saw matthew's post. So were the colour codes absolutely right, cause going by colour codes pin 3 of the JK IC went back into pin 5 and 6, signals one and two went into the JK IC and there was a yellow pin and a light blue pin that went nowhere...

Birdie

TheAmateur wrote: »

Yep that sucks. But it doesn't surprise anymore. The whole 1e9 course felt thrown together in a random mess. Actually, a lot more things felt thrown together in a random mess, I'm talking labs, tutorials, important emails, details of what's required of us, etc.
I think I'm beginning to understand...

It was TEN times worse last year!! Like 6 weeks of doing those drag/no drag excel graphs, worse.. Although there was none of this non-satisfactory student report ****e!!!

Boston

TheAmateur wrote: »

Sweet. I put them in after I saw matthew's post. So were the colour codes absolutely right, cause going by colour codes pin 3 of the JK IC went back into pin 5 and 6, signals one and two went into the JK IC and there was a yellow pin and a light blue pin that went nowhere...

The colour guide is a helping guide. Firstly, only the pins with colours need to be connected to anything. Follow the handout you where given. It may very well be utterly pointless since the assignment was created assuming you had access to all the hand outs which were available last year.

Brian

Frames of reference were never explained to us in Mechanics. After reading up on them, the Coriolis effect still makes no sense, but slightly less no sense.

TheAmateur

Baza210 wrote: »

Frames of reference were never explained to us in Mechanics. After reading up on them, the Coriolis effect still makes no sense, but slightly less no sense.

Yeah there are a few things we didn't really do... Inertia is a whole chapter! but the questions aren't that deep either though I suppose...

Jonathan

Baza210 wrote: »

Frames of reference were never explained to us in Mechanics. After reading up on them, the Coriolis effect still makes no sense, but slightly less no sense.

Wasn't explained to us either. He was too busy trying to confuse us with dots.

PurpleFistMixer

Well, at least it means you're unlikely to be asked to do problems in non-inertial reference frames.

mathew

I find it weird that some of these apply to me...
http://www.btinternet.com/~knutty.knights/eng_analys.html

Jonathan

Engineers are incapable of placing appearance above function.

I guess that would apply to me.

Shorts ftw.

devinejay

Jonathan wrote: »

Wasn't explained to us either. He was too busy trying to confuse us with dots.

It's like my notes have the measles...

Brian

EVERY TEACHER EVER wrote:

You can only multiply m x n matrices by n x r matrices (m==r | m!=r if(m>0 && r>0))

OH YEAH?

$5b29fbd87654e1bdad68676323e296c1.png$

Where

$3b68938149ec1fc0b99e625936cb94fa.png$

then

$62cc336d8d2e8c91415d0ac6a37e20f1.png$
$691e14db4a5ed78b646b816219d2b9d1.png$
$77af0c66099c5986478c79ca63d81cf0.png$

*foams at the mouth*

devinejay

Baza210 wrote: »

"Discussion of maths in one of the places I like to get away from study"

**foams at mouth**

Jonathan

You go and research my twitter then baza?

Brian

Sort of figured it was something I needed to know. As it turns out, I was just led further down the alleyway of disillusion and nerdrage.

Jonathan

Only about 200posts more and this thread will be longer than the BESS thread. :pac:

godtabh

Jonathan wrote: »

Only about 200posts more and this thread will be longer than the BESS thread. :pac:

The engineers will have there day soon!

devinejay

Tired of Eircom's bull-honkey, I've started using OpenDNS. We've already established here that I'm not the most interweb-savvy on boards, so does anyone here know will this clash with TCD's network settings, or is there any relation at all?

Brian

[color=red]some .edu page[/color] wrote:

If we have a changing B field cutting a conductor, then as soon as the B field changes, we will get an Induced current which has a direction decided by Lenz's Law.

This current may or may not be a bonus. When it isn't we do our damnedest to reduce the size by laminating the conductor or some such. When it is great we literally may cook with it. (Some types of stoves are induction stoves. They are cold to touch - unless you wear a conducting ring, but changing B Fields above induce currents in the base of metal pots placed on top which then resistively heat.)

That is absolutely incredible.