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In which my arts and crafts take over my life again - Tactical Ninja

Mar. 1st, 2013

09:53 am - In which my arts and crafts take over my life again

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So this weekend's fun activity - learning to solder.

Yes, I know, some people are apparently born knowing how to do this, and I feel somewhat uneducated that it's taken me this long to have cause to learn. I learned to weld when I was 20ish (arc welding only), but putting tiny dots of metal on a circuit board to glue two bits of metal together so current will pass through, is just not something that's called for a lot in the world of shepherding, you know? I'm pretty damn good at vaccinating though..

Anyway, yes. learning to solder. And now, in revelation of the full extent of my n00bness to this stuff...


I also have no shame, so I'm asking publicly - partly because the answer might be useful to other n00bs and partly because my exposition of n00biness might be self-esteem-helpful to other n00bs. And I haven't been able to find a definitive answer in any of the tutorials.

Arduino folks wot have done stuff with LEDs! Specifically LED strips!

1. The strips use 5v, and my arduino has a power pin that says '5v'. Can I plug the power wire for the strip into this and expect it to be powered? (currently 2m length)
2. The tutorials I'm looking at suggest using a power supply unit like these ones. That's awesome, but given that my project will eventually have 288 LEDs (which is 9m) , is it more sensible to get the 10A one? Or can I skip it altogether and just have it running off the arduino?

Told you they were n00b questions. Also, I'm aware that 10A isn't enough for my full project either based on what the tutorial says, but given that I'll be limited to about 6A anyway by battery tech, I might as well get used to programming the thing to never be full on all the time - sides, I don't actually want to burn out anyone's retinas.

So, um, yeah. And for those of you who don't give a crap about that stuff, have a picture:



No, that is not what I plan to do with my LED project. But it would be kind of cool.. hmm...


Meanwhile, having been let down by the laser, I'm now wondering if my dremel will do the job of creating slots in the acrylic tubing. It's 50mm diameter with 5mm wall thickness. It's quite brittle and possibly won't cope well with handsawing, but dremels are whizzy wee things and possibly the next best option to a laser. Anyone got any experience with this sort of thing?

Apparently there's going to be a circus in our front garden tonight. I'm quite looking forward to that.

Comments:

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From:m_danson
Date:February 28th, 2013 09:02 pm (UTC)
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They look evil and scary. Don't mess with the flock.
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From:tatjna
Date:February 28th, 2013 09:07 pm (UTC)
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I'm pretty sure the one on the left is smiling, which is even more disturbing.
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From:nick_101
Date:February 28th, 2013 09:14 pm (UTC)
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That's a lot of sheep.
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From:tatjna
Date:February 28th, 2013 09:16 pm (UTC)
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They outnumber us 7 to 1.
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From:tatjna
Date:February 28th, 2013 09:33 pm (UTC)
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I should probably sit down with you or grist at some point and do a crash course in stuff like this.
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From:tatjna
Date:February 28th, 2013 09:29 pm (UTC)
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Thanks. I think I'll just go for the bigger one and use mains power till I've got the software end of it sorted, which will give me loads of time to work out the battery end of things.

Meanwhile, I hadn't considered the eye thing too much. My left eye has good close-up vision but not my right. One eyed focusing is interesting, but adequate. I'll see how I go.

I doubt they make ultra-dorky reading glasses for my vision that can be bought over the counter, and at this point I'm not sure it's worth getting prescription ones. I'll muddle through.

Bonus points for posting pics of
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From:tatjna
Date:February 28th, 2013 09:53 pm (UTC)
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At this point that isn't really a problem, since I've only got 64 pixels to play with. I'd already resigned myself to having to step up to one of these for the actual project. Unlike you, I'm much less limited by space, so this is a viable option.
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From:tatjna
Date:February 28th, 2013 10:04 pm (UTC)
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Indolence Sloth from Java uses your asceticism as a form of entertainment.
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From:tatjna
Date:February 28th, 2013 10:15 pm (UTC)
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I actually figured that with advancing technology and the rate I'm likely to pull this together, by the time I have a working prototype using the gear I have, I'll actually feasibly be able to consider putting the gubbins in a one-inch tube and spinning it round my head.

By the time I have it perfected, I'll be able to have subcutaneous implants with a port that I can just plug stuff into and run it off thermally-produced energy.

Me being hot* and all..

*when dancing
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From:sophiawestern
Date:February 28th, 2013 10:04 pm (UTC)
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THEY ARE WATCHING YOU. creepy.
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From:tatjna
Date:February 28th, 2013 10:05 pm (UTC)
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THEY ARE PROBABLY JUDGING YOU TOO
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From:pombagira
Date:February 28th, 2013 10:09 pm (UTC)
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awsome sheeps... whee
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From:tatjna
Date:February 28th, 2013 10:11 pm (UTC)
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I love how the ones in the background manage to look like city lights.
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From:pombagira
Date:February 28th, 2013 10:17 pm (UTC)
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and the expressions on the faces of the ones in front.. the one in the front is all like 'BRING IT'

*grins*
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From:c_maxx
Date:February 28th, 2013 11:02 pm (UTC)
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And then after the photo, they all blunder aroun like, "I can't sshhee," "lookout for the human," "damn, is it saucers again, I just got back..."
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From:c_maxx
Date:February 28th, 2013 11:11 pm (UTC)

PS

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you do know, "don't melt the work, but get it hot enough that the solder flows and amalgams"? Elec'ics are particularly sensitive to (1) I expect, but if just the solder is hot, "no 2 and 3" means a "cold joint", no metallic alloying.

You prob'ly allreah-y know huh?

PPS great photo, they do look like the aliens are coming...
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From:tatjna
Date:March 1st, 2013 01:54 am (UTC)

Re: PS

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Yes, I know that but I only know it because I read it last night in the "How to solder and by the way why don't you know how already?" tutorial.
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From:slavezombie
Date:February 28th, 2013 11:20 pm (UTC)

a tiny town of sheeps' eyes

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Ironic. I'm learning mig welding. Solved electrical problem when I read the label on welding machine that says "use 20 amp electrical socket. This machine does NOT work well on 15 amps"
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From:tatjna
Date:March 1st, 2013 01:54 am (UTC)

Re: a tiny town of sheeps' eyes

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When all else fails, read the instructions?
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From:slavezombie
Date:March 1st, 2013 02:30 am (UTC)

Re: a tiny town of sheeps' eyes

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You and me r goin to be bff after we complete dis soldering/welding course together
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From:tatjna
Date:March 1st, 2013 02:35 am (UTC)

Re: a tiny town of sheeps' eyes

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Joined at the hip? O.o
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From:slavezombie
Date:March 1st, 2013 02:58 am (UTC)

Re: a tiny town of sheeps' eyes

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You know it, beautiful.
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From:bekitty
Date:March 1st, 2013 01:48 am (UTC)
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I really LIKE that particular breed of sheep. Aren't they a sort you've posted photos of before? I remember you posting a pic of a deleriously happy wee black-faced lamb which was utterly gorgeous.
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From:tatjna
Date:March 1st, 2013 01:53 am (UTC)
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These aren't the same as the Valais Blacknose (which was the cute lamb pic) - these are Suffolks, which are fairly common in NZ. They have the same colouring, but Suffolks go for the sleek, wool-less face and legs look whereas the Blacknoses look like muppets with fluff everywhere. Vis:

Valais Blacknose:


Suffolk:
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From:bekitty
Date:March 1st, 2013 03:18 am (UTC)
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Oh, I see! The Valais Blacknoses look more like Muppets, whereas the Suffolks look like sheeps. Strangely enough. :)
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From:bekitty
Date:March 1st, 2013 03:24 am (UTC)
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Also, the Suffolks in that picture almost look like show sheep. I notice that one of them has the wool trimmed from around her neck. I was wondering if it was naturally like that, then I noticed that the other sheep didn't. They also seem to be shorn very evenly. and the smaller one, on looking closer, looks like she's been brushed.
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From:tatjna
Date:March 1st, 2013 06:37 am (UTC)
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They most likely haven't been trimmed. Suffolks tend to shed their fleece when they've been left too long between shearings, or if they've been sick. The one on the left in the picture looks thin and unthrifty, and I'd guess she's been sick and that's why she's missing wool from her neck and legs. She probably has a bare belly as well.

The fleeces have that brushed look because the wool is both fine and dense, so it doesn't separate into staples in the same way that longwools do, and when it's short like that it has a groomed look to it.
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From:pundigrion
Date:March 1st, 2013 04:14 pm (UTC)
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Okay, I just let out an audible "Eeee!" over that Valais Blacknose picture! It is a good thing there was no one around to hear it xD
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From:tatjna
Date:March 2nd, 2013 10:25 pm (UTC)
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They are the best sheep ever! I would pick them over Jacobs, I think..
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From:pundigrion
Date:March 3rd, 2013 12:04 am (UTC)
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Cute, but I see they keep being mentioned as a coarse carpet wool breed. Not so much utility for handspinning as the Jacob, even if they win the cuteness contest. :-p
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From:meathiel
Date:March 1st, 2013 06:21 am (UTC)
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*rofl* @ that picture! You just made my day ...

EDIT: Oh - and did you see the sheep in my icon ... I love those Blacknoses ... :D

Edited at 2013-03-01 06:22 am (UTC)
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From:tatjna
Date:March 1st, 2013 06:28 am (UTC)
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AWESOMEST ICON EVER!
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From:neverminetohold
Date:March 1st, 2013 02:37 pm (UTC)
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Using solder was the only part I enjoyed during the "Technics" lessons we had back in school - we made a humidity sensor ourselves, if I remember correctly...

Whoops - better don't mess with the sheep. They look as if they will kick your ass if you make a wrong move ^_^"
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From:tatjna
Date:March 2nd, 2013 10:26 pm (UTC)
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I actually did some soldering for the first time ever (that I knew what I was doing) yesterday. I was ridiculously excited, mostly because the possibilities through having this skill are so huge.
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From:neverminetohold
Date:March 5th, 2013 03:57 pm (UTC)
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Oh yes, my father knows all the benefits of soldering - for example fixing a leaking pipe ^_^" It's really a handy skill for sure!
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