tatjna (tatjna) wrote,

In which my arts and crafts take over my life again

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.
Tags: brainfart, how does this work?, i need a project tag
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