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Archived threads in /diy/ - Do It yourself - 209. page
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File: rectify this.jpg (140 KB, 654x677) Image search: [iqdb] [SauceNao] [Google]
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I'm trying to rectify a sine wave from my laptop (generated by a simple oscillator in Reaktor). It's only half-rectifying though. I've tried various things, including a different set of diodes.

Any ideas?
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Post a schema ! But very likely ground problem : your laptop ground is differnt from rectified ground !
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>>928041
Yeah the ground on the jack is the brown one going into the bottom half. I can see how there might be a problem there but can't quite get it.
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>>928049
The "AC source" means just the tip (top half) and sleeve (bottom half) of the output jack.

Trying to "retire" my old 360 controller and put it in a display case while taken apart. Not sure where to get the shadow box or what size i should get. Ive also seen people use Styrofoam blocks with spaces cut out to fit the peices. How should i go about doing this
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>>928021
what do you want to do?
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>>928022
Put a 360 controller into a shadowbox after ive taken it apart, but im not sure how to mount the parts to the back of the box
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just hook up a shocker in the controller and fuck with people

I have this kind of kitchen faucet i am trying to teach young kids not to turn it on full blast when doing dishes and use less water Any idea ....

I know I can turn the pressure low but that wont teach them anything
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>>926797
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>>926797
Get a dishwasher.

Any solution that relies on everybody in the entire world doing something is not a good solution, particularly if that thing is annoying or inconvenient.

If you want to save water and energy washing dishes, then get a dishwasher. It can wash dishes better than you can, because it filters and recirculates the water instead of pouring it down the drain.
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>>926797
Maybe a switch that will actuate an electric fence unit if lifted too high?
Copper plate what mains positive hooked up screwed to wall behind faucet so lifting it too high completes the circuit to earth?
Bear trap screwed to wall in same position?

Possibilities seem endless, OP. Where's the hard bit?

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Aight /diy/, first time posting here. With winter finally here and me living in a shitty building I've a real problem with humidity. Electric dehumidifiers are out of my price range and I've read that chemical based ones are definitely not worth the price. So I decided to make one myself. I was thinking one based on calcium chloride, but I'm not sure what would be the best way to put it together. I was thinking a strainer with the CaCl2, with a container beneath it for collecting the refuse liquid and a fan above it for forced circulation.

Does that sound...
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File: dehumidifier.png (12 KB, 554x645) Image search: [iqdb] [SauceNao] [Google]
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This is what I was thinking about.
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>>925885
I've seen a calcium chloride based dehumidifier being literally just a bag of CaCl2 suspended from a rope over a bucket. Moisture gets absorbed, reaches saturation, then drips off into the bucket.

Was for use in sheds and such.
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>>925946
Another thing. This solution had the added bonus of being 100% reusable. However, found the product I was thinking of, and it says that it only works to bring down the humidity to 45%, below which it won't work.

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sup /diy/ rate my new levels
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>>925645
Looks overpriced. In fact, you probably paid for that fancy green 'made in Germany' text more then the product itself. Hell, a monkey could push a liquid filled glass into a plastic or fiberglass shell when a machine says its level.

Anyways, stop looking for attention online you fag. This board is for posting diy projects and things done yourself. And not, shopping is not diy.
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>>925647
OP, take no notice of this jealous prick.

I've got quite a few stabila levels and I think they're brilliant. Never really had one I wouldn't rely on.
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>>925651
Have you ever dropped any of them and had nothing happen to the accuracy?

I bought this heat tape today to keep my pipes from freezing again. Had a really tough time even getting it nicely around the pipe but once I plugged it in, nothing happened.

Are you supposed to atleast feel some kind of warmth with a hand when it's plugged in? Or did I get a malfunctioning once?
12 replies and 1 images submitted. Click here to view.
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>>927941
The "tape" looks similar but has not indicator light and has an europe plug.
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>>927941
read the instructions
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>>927944
I did, it says that it will work if the thermostat reads less than 3 C on the pipe but I applied the thermostat to the place there the pipe is frozen so I imagine it should be cold enough there.

Hey /diy/,

So I want to design my own trackball mouse (pic more-or-less related) but I don't have any experience in making or designing hardware, so how would I get started? I know how to use Blender for 3D modeling but how should I go about developing a prototype of my mouse?
11 replies and 3 images submitted. Click here to view.
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if you just wanna waste your time on a useless activity, why not start a blog, make clay vases, or collect MLP ponies?
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>>927539
It's not useless since I'll use it and probably sell the design if it turns out good.
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>>927565
>sell the design if it turns out good
lolololol

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It's the anon from the woodworking bread who likes pan-head screws, and I want to make an audio-hub with 4-pole trrs chassis sockets instead of 3-poles. Does anyone know if these are for sale online? Preferably somewhere in New Zealand.
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Here is what I want the circuit diagram to be, in case these already exist.
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Will cables such as these be easy to solder together? I have this product in mind, but am unsure how to mount it or whether wiring it will be possible.

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I was cutting a metal hook in bathroom and didn't cover the area hit by sparks so now I got miniscule metal shards embedded in the ceramic plates. Any protips on how to ge it out? I tried to scrape it off with metal scrape ut it just made it worse.
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Magnet
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>>922755
>embedded in ceramic tiles
Uh, no. If something got 'embedded' in them then it's not ceramic, it's some sort of plastic, and no, you can't fix it, you'll have to replace the flooring.
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>>922883
sparks melt into glass and ceramic
this happens very often during bodywork on cars
mechanics just dont give a fuck
welding masks have plastic shields in front of black glass to protect it from sparks
>>922755
Those tiles are fucked, even if you removed sparks youre left with holes in enamel
It would be easier to replace tiles
And if you leave tiles as is, sparks will start to rust and form stains

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Hey diynos, I had a party at my place and woke up with pic related. I had an older leather couch pressed near the wall, didn't know the corner was exposed and the steel edge dug into the drywall something fierce when one of my buddies laid back into the wall. So now I'm stuck with this, coke can for reference. Best way to fix it? California patch wouldn't be ideal, but I will do what I have to do. Thank you for any advice you may have.
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>>928250
Pic 2/3
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>>928250
3/3
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>>928250
4/3 decided a pic of the drywall under the pain layer would be handy

Dudes help me with a survival guide
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>>928236
For what? What scenario?
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Amazonia
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So, help me with a basic survival guide

File: archway-x.jpg (21 KB, 450x300) Image search: [iqdb] [SauceNao] [Google]
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So I bought this 105 year old house. Its still got trim up from I am assuming the early 70's or earlier. Its all really wide and thick trim. They have been painted over atleast two or three times with white paint. It looks good and has a clean modern look, my wife and I prefer that dark chestnut wood stain you find in old homes. I got two floors of this trim/baseboard, about 6 doorways, and two large archways. It would be a big, messy, and tedious task.

What I want to know is how long wood it taketo strip paint, sand, stain, seal. Keep in mind I got kids too. I dont...
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OP here. One lther question would be, for a task like this, something that is easily noticeable to the eye. Is it worth spending the money on a pro rather than slugging it out yourself?

File: spring-thing.png (12 KB, 886x485) Image search: [iqdb] [SauceNao] [Google]
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I come to you with a vocabulary question and a terrible illustration.

I am looking for something much like a pogo stick, but a great deal shorter, perhaps four to eight inches. You could also consider it a shock absorber, but I thought those were hydraulic. It would need fasteners on each end, plus some mechanism to keep it together.

They'd come with a variety of spring constants so I could Hooke's Law out how far it would move under a given force.

Does this thing exist, and if so, what is it called?
7 replies and 1 images submitted. Click here to view.
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I guess that'd just be called a spring. A spring and a shock absorber are two fundamentally different things. A spring reacts with a force proportional to how it is compressed or tensed. A shock absorber reacts with a force proportional to the speed with wich its end is displaced.

Why do you need to encase the spring in these cylinders?
Depending on the forces involved you could use pvc pipe or perhaps get a telescopic fork from a crashed motorcycle. When bent the fork tubes are basically scrap metal, but they're usually bent within the top 6 inches or...
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>>928244
Encasing the spring in the cylinders ensures motion parallel to the spring's axis.

I figure someone just had these sorts of things already made but I guess not.
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>>928261
Toilet paper roll holder

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Hello /diy/

I purchased a Marshall 250 dfx with a couple broken connections. Soldered most.
I am missing one component on the board and was wondering if anyone here has an idea
10 replies and 2 images submitted. Click here to view.
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The missing piece is right in the center of the picture and b/w two identical pieces. Trying to figure out what it is.
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>>928044
If you are referring to R24 then it appears to have not been installed from the factory (IE: "should" be missing).
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>>928044
Yeah, its supposed to not be there. They do that sometimes when they change the design but don't want to pay to have the manufacturer change the board. Among other reasons.

Dear /diy/

I have a 5W, 18V, .28 mah solar panel and I want to convert the voltage to around 5v, and increase the amperage to at least .5mah. How could I do this?
6 replies and 1 images submitted. Click here to view.
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if you can into schematics and datasheets, look up this regulator chip, or similar: AP34063

otherwise, ready made circuits can be found by googling. one easy way is to use a Blackberry car adapter (charger) with takes in 10-25V and puts out 5V. $3 at the thrift store. other brands may work, but are not specifically rated for 25V.
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>>928027
It's not 'milliampere-hours', it's just milliamps, and it's not '0.28mA', that would be 280 *microamps*, it's 280 *milliamps*, or 0.28A.

Now, then.. what you need is a step-down (or 'buck') switching power supply. Since you need 5V (not 'around' 5V, it's *5V*) you can get a module that does this off-the-shelf -- which in your case is a good thing, since I don't have much faith at this point in your being able to actually construct one.
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>>928027
..oh, and since you're confused about it: 'milliampere-hours' is a unit of measure you'd use for a *battery*, not a solar panel of any kind; it's a unit of measure with regards to *storage capacity*.

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