3 more posts in this thread. [Missing image file: 1 (7).jpg]
I want really which board this belonged on, so I figured I would get the most helpful and creative response here.
I have come up with an idea and am trying to make a prototype of it.
Basically what it is, is a pen with two different font sizes. Similar to the bold function on a computer. The font could be easily changed to highlight in a bigger font, important words, titles ect.
Would anyone have any ideas on the mechanics and production they'd care to share.
Im hoping for pen to be cheap to make/sell
Also what do you thin of the idea as a whole?
5 more posts in this thread. [Missing image file: rucksack.jpg]
Hey /diy/, artfag here (most of /ic/ is crap, for the record) and hopefully this thread isn't technically /fa/ or some crap.
Anyway, I kind of want to try making some kind of glorious manbag or other kind of general carrying-case for art tools.
Probably starting out with just a portable eraser/pencil case,maybe one that's basically just a slightly bulky wallet. (And still functions as a wallet.)
Then if possible, working towards a sturdy bag that can hold and at least allow me to semi-organize brushes and paints, some sketchbooks, maybe adjust to hold a camera and relevant accessories. (or make a separate thing for that, I don't know)
Not sure where to start exactly.
What's a good material to start with? I mean, Leather would probably make the sexiest bag possible, but probably won't be cheap to get or easy/forgiving to work with in the first place.
Some kind of denim or canvas-y fabric maybe?
I'll assume the tools I need will vary heavily depending on material? Right now all I have is...a lot of sewing supplies that my mother would let me use, needles, large cutting mats, sewing machine, various kinds of string. Not sure much else would be directly relevant.
pic related is along the lines of what I'd want to make.
Even better if you or I can come up with a way to fit in some kind of working surface (whether that's a flat,solid drawing surface on a flap of the bag or just a really good way to store a large-ish clipboard in or near the bag.
1 more posts in this thread. [Missing image file: diagram.png]
So I come to you folks with a (hopefully interesting) challenge.
I want to build a wall mounted shelf which has four boxes for storing items in, and the boxes rotate around the center, much like a ferris wheel. Easy enough right? The kicker is that I can't figure out how to keep the boxes upright all the time.
Originally I had considered putting a weight heavy enough at the bottom of each box so although it may wobble when moving, it would stay essentially upright, but figured there may be a better way.
I made a diagram to help explain where I'm at now, and of course I'll explain it!
The top middle is the octagon itself with the four storage squares. I've represented two different locations of their movement with different colors. The gray dots are hinges and the orange circle shows the movement of the centers.
The pressing matter is the mechanism on the bottom. The gray rectangle with the red line on top is fixed to the beam which would connect to a header, so it wouldn't rotate at all, and since the connecting rods cannot go any closer or further away, the center rectangle, the middle connector and the outer swinging box stay in the same orientation, and in turn are fixed to the box which keeps it upright.
But I've reached a mental impasse. I cannot figure out how they would physically sit inside the whole contraption. Eventually the connecting rods would collide with the center rotating shaft when they get to nearly the other side of their rotation.
I'd say the whole contraption should be about two feet high.
Would a single ball bearing even be a decent idea to rotate the whole thing, given the main force would be a downward one on the ball bearing? Would MDF be a good material for the octagon and it's shelving? I'm someone who is now learning how involved it is to actually make an idea to a real item.
I'm likely better off designing an interesting static shelf, but it's hard to pass up a challenge.
5 more posts in this thread. [Missing image file: ArduinoUno_R3_Front_450px.jpg]
I'm attempting to build an digital/analog hybrid synth using my arduino uno and I'm stumped on a power supply problem. Currently, I'm working on one of the VCOs, but it requires +15 volts DC, -15 volts DC, and a ground (the schematics for the VCO are here http://www.birthofasynth.com/Thomas_Henry/Pages/VCO-1.html). What is the best way to use to arduino outputs to power the VCO?
I was thinking about using a NKA0515DC (http://www.mouser.com/ds/2/281/kdc_nka-45878.pdf),which converts 5 volts into +/-15 volts. I'm still a little shady on how to use it though, and I'd have to use the ground on the arduino, if that's even possible. The other option I have run across is the TLE2426 (http://www.mouser.com/ds/2/405/slos098d-121616.pdf), witch has a lot more documentation and output a positive and negative voltage, in additon to having a virtual ground. The problem is that it only output +/- half of the voltage in. This means that I would need to supply 30 volts, either from an external source, or perhaps by boosting the output of the arduino somehow, or even combining 6 IO ports set to HIGH (5v * 6 = 30v, right?)
Anyway, what is the best method for supplying power? Should I try one of these, or is there another more efficient method? Thanks in advance.