A Study: Book Light

2018-Mar-19, Monday 03:05 pm
I wanted to try out a few techniques on a smaller scale;

1. feasibility of the neopixel circuit layout,
2. using conductive thread as traces,
3. light transmission through different fabrics.

And so I ended up with the slightly silly light-up bujo cover/ portable night light.

Steps )

Much more impressive in a dark room. Coded using FastLED library, OceanColors_p palette, taken from this tutorial.



Cover, front, in dark room
Photo by [personal profile] chebe



Conclusions;
1. The circuit layout does work well. But, there is still a looseness to the attachment points (on the boards) that could be improved.
2. I didn't treat the edges of the conductive fabric, and although it frayed very little it did still fray. Treating the edges of the strips would help. I don't think using the conductive fabric over conductive thread was any faster, but it was less fiddly.
3. Diffusion of the neopixels is best achieved through distance from the LEDs and the covering fabric, so designs enforcing this distance would be better.

Bullet Journal Cover

2018-Jan-03, Wednesday 06:42 pm
Do you keep a Bullet Journal? Do you find yourself with too much quilting cotton? Why not make some covers for your bujo to keep them in good condition?

Mine is the classic Leuchtturm 1917 A5 size. If you use something else simply adjust the measurements.

You need just two pattern pieces:

The main piece is 35cm x 23cm;
> (15.5 + 2 + 15.5 + (1cm seam allowance x 2)) = 35cm
> (21 + (1cm seam allowance x 2)) = 23cm

The smaller piece, for the wings to grip the journal is 11cm x 23cm;
> (9 + (1cm seam allowance x 2)) = 11cm
> (21 + (1cm seam allowance x 2)) = 23cm
Instructions )

And all done. See just the touch of colour at the edges? This is the most basic of patterns. There are endless ways to fancy this up. For starters, you could add interfacing or wadding if you want a more protective cover, elastic to keep it closed, or ribbons to mark pages. Enjoy.



The End
Photo by [personal profile] chebe

Lilly*Blossom Book Bag

2014-Feb-13, Thursday 03:17 pm
I've had this pattern for a while now (so long in fact that it doesn't appear to be for sale anymore). It's a Lilly*Blossom Book Bag sewing pattern. And when I say pattern, I really mean an instruction booklet. It doesn't come with any pattern pieces, rather instructions on how to make your own. Which is fine, because it's just a bunch of rectangles, and if you're anything like me your book won't fit the standard size anyway.

The reason I've had this pattern a while is that all my books are different sizes, and I couldn't think of a book I'd need a custom cover for for any extended length of time. That is until I started getting interested in poetry. Poetry is a slow read, often needing many re-reads. This collection, 'Staying Alive', was recommended to me. And it turns out there are sequels, that are exactly the same dimensions! Perfect.

Closed book in a fabric cover with handles, outside view

Lilly*Blossom Book Bag
Photo by chebe



More... )

Passport Cover

2011-Jan-07, Friday 08:24 pm
Recently in college I studied a paper on RFID tags, which reviewed, poked, and prodded the security of a couple of newer tags. Well, it got me concerned. I pulled out my somewhat dusty copy of 'Switch Craft' and pulled up the project on making passport covers.

How to )

The idea is that the tin-foil layer will create a Faraday cage around your passport while it's in the holder. There is some conflicting research as to whether thin sheets of metal that close to UHF RFID tags actually dampens the signal, as it does for HF tags, or whether it actually amplifies the signal. Until I get a spare few thousand euros I won't be able to buy the readers and test for myself, so as with most things, buyer beware. I'm not especially worried, but that's because I still have the old pre-RFID passport for a couple more years. Hopefully I'll have this technique perfected by then.