NeoPixel Tiara

2015-Aug-25, Tuesday 08:08 pm
chebe: (BeautyQueen)
I love the Adafruit Learn site, particularly the wearables section, there are some really fun ideas in there. And when I saw the NeoPixel Tiara I knew I needed one. I had almost everything already, except the 3d-printed band.

To TOG! We downloaded the thingiverse file (tiaraHolesClose.stl), converted to gcode, and watched the LulzBot Taz print for 50 minutes. *cue montage music* It was a pretty good print, given how fine some of the detailing is, but our process needs tuning as there are artifacts, and the strands are coming apart as I touch them. Still, usable!

LulzBot Taz 3D Printer part way through printing the tiara

Robot minion making me a crown. Finally.
Photo by chebe



On to the assembly! Process details await )

Tiara on top of my head, looking nicely symmetrical, with centre NeoPixel lit up

Finally, my royal position secured
Photo by chebe



And, because the tutorial code has a nice sparkle effect to it, here's a short video.



I am going to wear this everywhere.
chebe: (Spools of thread)
I am haphazardly working on projects, and have just replaced my soldering iron, so I should have more to show soon. In the meantime I'm occupying myself with little things that I should already know. Like stringing some beads on some string. This is useful knowledge.


The first method to do this is simply wrapping a length of waxed cotton cord around an item (in the middle of the length of cord). Then passing the two tails through a single bead and knotting them so they don't fall back through. It is really simple, and works well. Except that the cord needs to be long enough to go over your head. And the bead needs to have a wide enough hole to fit the two widths of cord.

Rainbow titanium doughnut on black waxed cotton cord, secured with small silver tone bead

Simple single bead necklace fastening
Photo by chebe



To get a shorter necklace the length needs to be adjustable (or to open). Doing this is also really simple, once you've done it once. Take a length of cord in a circle, overlap the ends. Place one of the ends under the cord parallel to it, and then do an overhand (aka regular) knot to itself. Repeat for other tail. (Try it, it makes sense once you see it.) Now it can be long enough to go over your head, and tight enough for a choker style necklace. (And you can use thick nylon cord without having to worry about fitting through any beads.)

Copper medallion on a double-overhand knotted black nylon cord

Adjustable double-overhand necklace fastening
Medallion by Coral Mallow
Photo by chebe



Next I have to acquire some crimp beads, spiral clasps, and other such fun findings. At least now I can wear my pretties.
chebe: (AsciiC)
Okay. Hi. Yes, I'm still here. It's been an eventful err, many months. But more about that another time. Maybe.

Well, either that, or, I only post once in a Blue Moon! (Sorry, couldn't resist.)

Last year at EMF I picked up a BeagleBone Black (rev C). This week I actually unpacked it and powered it up. I was pleasantly surprised to find that the rev C ships with Debian installed, but that means most of the documentation online (and on the BBB) is slightly out of date. No worries; things are actually simpler now!

Even though it shipped with Debian when I tried to apt-get update/upgrade/install I got errors. So there was only one thing for it; flash the onboard memory. When I went about this I found that the source of online documentation was (is?) offline. And the wayback machine was only serving up some too-old files. Luckily I found a chap with a link to the most recent eMMC flasher image! I've said it before, and I'll say it again, yay for bloggers!

One thing that tripped me up; when writing the image to the SD card, on Windows you need to run the program As Administrator for sufficient privileges. Learn from my mistakes friends. Also, only hold down the SD button until the 4-LEDs start to flash, then let go. The rest is smooth sailing.

When you boot up, you ssh in (over the USB cable); as root, with no password. Set one immediately! Then you do all the usual configuration things;
set a nice hostname - vim /etc/hostnames, vim /etc/hosts
add a non-root user - adduser, visudo
setup wireless - vim /etc/network/interfaces (unfortunately it involves hardcoding your password)

(I got a raspberry pi wireless dongle to use with my cubox, and now my BBB. Poor thing has never meet a raspberry pi. ... Speaking of the cubox; arch linux turned out to be just too much effort. Will probably throw Debian on there as well.)

Then reboot, and if ifconfig doesn't show an ip-address try ifup wlan0. Once online apt-get update, apt-get upgrade. And just like that you have a fully functioning Debian server (with broken out physical pins) to bend to your will. I have to say, it is one of the easiest setups I have encountered with microcontrollers/embedded systems. And a good first impression means a lot. I look forward to playing with it more.
chebe: (Sewing Machine)
It's okay, my sewing machine and I are friends again. I had been using 'universal' bobbins, but it turns out they don't fit Janome. I bought some generic brand ones that mostly fit, just a millimetre or so off. The problem is less frequent now. But every so often I hear a clatter, as the bobbin thread comes out of the guides and loses all tension control. Now that I know, I can listen attentively, and tend to her when she acts up.

Have you seen Seamwork? I'm enjoying the monthly appearance of quick, casual patterns in my inbox. And while I'll never make all of them, learning about the techniques is interesting. One of the patterns with issue two was Manilia, a pair of leggings. This, I thought, fits in with my sew-knits intention, and is an easy introduction to trousers. So I got out my spotted fabric, and had a go. (You'll be glad to know, dear readers, that this is the last of that spotted fabric! Newer colours and patterns await us both.)

Two legs, front and back pieces each. A covered elastic waistband, and some cute tulip cuffs. Add it all together and you get a garment with no hems! My absolute favourite kind! Very easy to make up (once your machine behaves). Fit-wise; I need to allow more width in the calves, and take out both width and height in the belly. But, regardless, very comfortable. Hope to make again.

Couple of pictures )
chebe: (DarkStare)
In sad news, it appears my new sewing machine and I will not be immediate bffs just yet. I am rather appalled at how it has handled stretch knit fabric and elastics.

I finally got around to making up a test of the panties to go with the Butterick 6031 slip. The last part of the sew-along is here.

The pattern is very simple and straight forward. A good fit and style. (Clearly much better than my attempt at the Kwik Sew 2100 panties.) But as this is just a test I swapped the waist stretch lace for folded-over elastic, and just hemmed the legs without any elastic.

Underwear underneath )

Simply Stylish Bag

2015-Jan-25, Sunday 11:51 pm
chebe: (Sewing Machine)
I made up this bag from a blank (no fabric) bag kit by U-Handbag. It provides everything you'll need; the hardware (snap, handle), interfacing, wadding, just without the actual fabrics. Which gives you great scope for personalising.

No, this isn't a knit. It's fancy (quilting?) cotton, the kind that you aren't really supposed to make bags with. But I don't have much experience with matching patterned fabrics, so wanted to play around a bit.

Front outside view of finished bag, sitting on a chair

Finished bag
Photo by chebe



The Usual Details )
chebe: (OnTheVergeOfSomethingWonderful)
I'd be surprised if this hasn't been done before, but as wearables, or at least the knowledge of them existing, becomes more mainstream I find myself increasingly having to explain why I think this or that device won't be a runaway success. I have come up with a taxonomy of sorts, for personal tech.

1) The fad. These are typically novelties, interesting ideas that may lead somewhere, but after an initial burst of interest the current form just doesn't seem to work well for most people. Things like the Segway.

2) Labour-saving. These are the classical improvement in work processes (computers instead of typewriters and filing systems, robotic arms in manufacturing plants), or that free up time domestically (washing machines, dishwashers). These make peoples lives easier, and succeed if relient, and affordable.

3) Filling emotional needs. This is probably one of the harder ones to guess at. Things that often seem like toys end up meeting a need in people that they often didn't know they had. Prime examples are gaming consoles, personal/portable music systems, and cameras. People can get very attached to these devices.

4) Connecting people. Anything that connects people in a practical, meaningful way seems to do well. Perfect examples are the phone, and the mobile phone. Mobile adoption went a bit like this;
"What do you need that for?"
"Okay, use this for emergencies."
"Now, just let me know where you are and when you'll be home."
"I will call you every five minutes."
Smartphones took this successful model and loaded it with emotionally fulfilling functionality like music players, cameras, and games. Make it affordable and how can it not work?

There have always been limits to our tech usage though. Even if we forget it often, we are social creatures. Deeply ingrained in us is that survival itself depends on being part of the group. We end up with a great many social norms, that don't necessarily welcome tech.

Perhaps an example will explain better. The smartphone. Twitter, Facebook, Instagram, telling friends and family (and strangers) all over the world about the lunch you just had. Good. Head buried in phone while the person you are having lunch with is largely ignored. Bad. It says, you're less important/less worth talking to than the people on the other end of this device. When the tech becomes an actual barrier between communication, social norms act against it. This is why headphones, saviours from the noisy creep behind you on public transport systems, are not acceptable headwear at the dinner table. Whereas spectacles are perfectly acceptable, even encouraged.

And it's this gulf I think many of the new wearables are falling down. Everyones favourite kicking horse, Google Glass, is the best example. It literally puts a computer between your eyeline and other people. Quite apart from the privacy aspects, this puts you at the same social disadvantage as always checking your watch, and being head-down in phone. I'm not sure if it's the tech, or the social norms, that need to change, long-term. But I do know which one is easier to change short-term.

One of the interesting features of this whole wearables/IoT/big data world is that I may need to add a fifth category; healthcare. While there have been great advances in medicine, surgery, and hospital care, very little of it was consumerable (perhaps spectacles, hearing aids, walking aids, wheelchairs). But will it continue to be a specialised market, or will everyone have a few devices hanging around?

There are a great many questions right now, but it's still largely predictable. I look forward to the next unforeseen development.

Another new re-beginning

2015-Jan-15, Thursday 07:56 pm
chebe: (Default)
Hello. I'm going to blame the lack of posts recently on three things. 1) Being much too busy. 2) Being overly exhausted. And 3) the fact that my phone broke again. I had become overly reliant on it, and so it took all my plans/notes and photos with it.

Well, it's a new year, so there's nothing to be done now but try and learn my lessons from the last twelve months. My number one goal is to stop doing too much. I've spent my spare time the last three-four weeks lying on the sofa, simply unable to do anything. It's not enjoyable.

I'm going to reacquaint myself with my camera, and refuse to be wooed by any future phone that comes into my life.

Otherwise; I'm determined to sew properly this year. I miss it. Making plans doesn't really work out for me, so this year I'm just going to concentrate on knits, and see where it takes me.

Selection of knit sewing patterns strewn about

Selection of knit patterns
Photo by chebe



I've been half following the posts on defining your style. At least, it has gotten me thinking about what I wear, and what I want to wear. I wear separates. I like separates. And layers, many layers. It's a combination of the climate here, and that many moving parts makes it easier to personalise, to mix-and-match for more options. Jeans, tshirts, jumpers (aka sweaters), and an ever increasing number of cardigans, make up my daily staple. And they are all knit (or stretch woven). Comfort is paramount, because no matter how beautiful a gown, if it cuts and pinches I'm never going to wear it.

Art and fashion books open on images with lines and colour palettes I find particularly appealing

Inspirational photos
Photo by chebe



And as far as colour is concerned it's black, black, and even more black. Accented with strong, deep, jewel colours (purple, blue, red, green). Although lately I'm also being drawn towards neon/flourescent shades as well. I suspect wearables/scifi/futurism is taking its toll. Which is an interesting intersection with knits, and comfort fabrics in general. I'm itching to get my hands on some of the newer high-tech (typically sports) fabrics. I do believe clothing can be comfortable and sleek.

So yeah, happy new year.

SciHackDay side project

2014-Nov-19, Wednesday 09:34 am
chebe: (Default)
Set the scene; it's midnight, I'm just back from (sci-fi) book club, SciHackDay kicks off in the morning, and I want a project; something sciencey. I decide I want a radio telescope. But, well, I don't have the parts. So I scale back my idea into something I can iterate up into a radio telescope.

I shifted my focus on the electro-magnetic spectrum up to visible light, hoping to use my new colour sensor. It will really only give me one reading from one point of space, like a single pixel. To scan an area I'll need something to move it along. But I don't have any servos, and I've never played with motors before. Luckily I have a robot arm handy. And then the rest should just be Arduinos.

That's the thing about poorly researched hacks, they're never as straight-forward as they seem.

Down the rabbit hole )

Also, photos are up!

SciHackDay 2014

2014-Nov-17, Monday 12:47 pm
chebe: (OnTheVergeOfSomethingWonderful)
Science Hack Day is an all-day-all-night hackathon; covering software to hardware, but with a project emphasis on science. It's in its third year running in Dublin, but this is the first one I've been able to attend (November is a much more civilised month than March).

It started Saturday morning (15th Nov), and finished Sunday evening (16th Nov). In thirty-two hours of incredibly intense focus, I got a mere thirty minutes of sleep. But ate a lot of pizza! It was fantastic the way the SciHackDay crew set things up. Large quantities of food would just appear every so often, and there was a steady supply of snacks throughout. Eliminating one very common, and annoying, disruption to work; that of hunting, gathering, preparing food. Sleep as well! Although many people went home to rest, and some managed a few hours on sofas and floors, my brain was just getting settled into focusing on some software work in the wee small hours, and not being forced to leave and miss that period meant I was much more productive than I would have been otherwise. But I am very glad it wasn't any longer. As soon as I got home I fell asleep for sixteen straight hours.

There were some really great project ideas, and even more great project implementations. (A fantastic number of wearables and etextiles too.) But I was wary of the too-many-cooks problem, so I helped out where I wasn't in the way, and worked on my own small project.

Chording Glove project )
Page generated 2015-Aug-29, Saturday 12:34 pm
Powered by Dreamwidth Studios