Hello good people of /diy/!! I was hoping you could help me with my crossover needs. I am trying to make a high pass filter for my two way speakers system in my living room. I have a bunch of old audio equipment that I can tear into for parts (resistors, caps, etc.) Although I have very limited knowledge on what to use. I was hoping some of you could point me in the correct direction to make an "in line" high pass filter for my tweeter. Any help will be appreciated.
>>924928 You'll probably want a lower cutoff frequency of around 1.3k, so a resistor of 12k and a cap of 10nF should get you close. Check out http://www(dot)electronics-tutorials(dot)ws/filter/filter_3.html for more details.
A LPF to protect the high end would be a good idea too. For a cutoff of 20kHz, a resistor of 800 ohms and a cap of 10nF will do.
I chose 10nF because it is a fairly common component, then chose the resistor based off that capacitor since they are much more plentiful. When you get your components,... Comment too long. Click here to view the full text.
I'm at work right now. I spilled a cup of coffee across a three level glass cabinet/desk. I've managed to clean the most of it up, but there are little nooks and crannies I cannot possibly get to (without completely dismantling the case, which I cannot do, as it is not my property and in a public place).
My problem lies in that although I can't see anymore spilt coffee, I can certainly smell it. Which isn't awful right now, but I imagine will be once it goes rancid.
What exactly can I do about... Comment too long. Click here to view the full text.
How hard would it be to build a "space suit" I don't necissarily need it to be so tight it can operate in the vacuume of space, Just enough to keep the Canadian winter off my face. Climate control like heating and cooling and ventilation would be a plus but not totally necissary.
as for heated clothing, this is something i have actually researched pretty extensively and it's not really viable unless you have a ton of money to drop on expensive Li batteries or you're also using a vehicle like a bike or a scooter. If you have a powered scooter you have an essentially infinite power source from the alternator / generator. Otherwise you're going to be lugging around huge batteries or paying out the ass for Li-ion and still having to carry quite a few of them to get any decent heating time. The heated jacket itself... Comment too long. Click here to view the full text.
How much do you guys know about stone floors? I was cleaning the floor the other day and accidentally used a wrong kind of soap, after I wiped it off I noticed some of the color came off. There's a spot on the floor now that looks kind of dusty, rest of the floor is black and this spot is a little lighter. There's these kind of signs of wearing off all over the floor but the rest are much smaller and you don't really pay attention to them. I looked it up online and they said that olive oil can give a worn out slate the color back so I tried it. Looks... Comment too long. Click here to view the full text.
I did, but I'm pretty sure it's not residue since the part even feels more coarse than rest of the floor and looks kind of faint. I will wash it again tomorrow to see if the oil comes off and test this too
what if you make an RC plane's wing by first constructing some ribs out of balsa wood, make them all stick together with some carbon fiber rods, and then put some type of material over the top? What material though?
>>924651 Wow, never thought this skillset would ever be used again.
You don't need carbon fiber rods for the spars, you can use something like birch.
To cover the wings an fuselage, you have choices. There's traditional paper-and-dope (it's a special type of paper), or silk-and-dope (stronger, but heavier and more expensive, and as I recall a little harder to work with), or there's a type of heatshrink plastic, but you need special equipment to work with it, namely a special type of heated iron... Comment too long. Click here to view the full text.
Can anyone give me a absolute beginners guide to hacking? Like if someone who never touched a computer aproached you and ask you to teach them in the art. I'm not looking for illegal activities, i'm curious about becoming a spec ops, or intelligence agent.
where does /diy/ get their phone/tablet replacement parts? gonna finally fix my nexus 7's busted screen but id like to know what peoples most trusted and/or cheapest sources are. pic tangentially related.
Dunno whether to post this on /k/ or /diy/ but basically very soon I'm coming into possession of a Martini Mk. III
I want to hang it up but all the 'gun racks' I find on the interweb are either for like 5 rifles or tacticool. Considering I want just the one rifle and it is an antique I'm thinking of some kind of wood and/or brass hook wall mount thing - but I don't know what to get or make one from scratch
Hey guys, i want to have a lottle 4 usb charger thing flush mounted somewhere in my dash. I hate cigarette sockets ones as they are absurdly unreliable and slow charging and look like shit so i want to hardwire in something like pic related, except with just 4 usb slots and 1 on off switch which is for all of them. How would i go aboit wiring something like this up, anyone got any wiring diagrams or good ideas? The main criteria is all 4 have to be able to charge at maximum speed and be able to charge any device. Thanks guys
>>924433 Run a heavy guage wire from the battery to where you need power. Splice in a fuseable link closer to the battery. Then split into 4 smaller wires right before your charger thingy. That's all I got.
I'm trying to slim some of my dress shirts to a better fit, and i've gotten a great shape with pins, but i'm getting a weird bulb of material on the chest area like a ( ) between the two buttons. i've tried loosening up some fabric but it's not working. it seems to happen when i pin the armpit smaller
Issue here is that women's clothes require darts and wedges to fit over the bust properly. That shirt likely fit well enough before you tightened it up. If you read up on bodice pattern making, or check out a fitted women's blouse, you'll see what I'm talking about.
Your options are to either add stretch panels to side or back (shirring, elastic panel, etc) or to add fabric... Comment too long. Click here to view the full text.
>>924392 when i was 18 or so i built a stove top still out of an enamel stock pot, a coil of copper tubing, a meat thermometer and a 3 1/2 gallon bucket, managed to make some rocket fuel vodka and not poison myself
Hello /diy/ i have this beast: Conion C-100F and i'm thinking of modding it and replace the top deck with a bluetooth/usb player I dont want to change anything cosmetically I will hide the usb connector inside the cassette port and repurpose the cassette buttons to the bluetooth speaker buttons I'll buy a cheap bluetooth speaker and crack it open and transplant it inside and connect the btSpeaker lines instead of the top deck lines Is it possible? I dont want to ruin my boombox also i want it to have more functionality
The buttons on a tape deck aren't simple pushbuttons. It's a fairly complicated mechanical system: Play button pushes the head into place and locks the eject button. Stop button pulls the head back and unlocks the eject button, etc. The actual electronic buttons are buried in the mechanical apparatus, so you can't just strip out the mechanisms and have a regular set of buttons.
You'll have to completely remove the tape deck, salvage the plastic bits that go on top of the buttons, then put those on a new set of pushbuttons on a new circuit board.
Hi, /diy/. I watched this video: https://www.youtube.com/watch?v=uXePz7HJLgo&oref=https%3A%2F%2Fwww.youtube.com%2Fwatch%3Fv%3DuXePz7HJLgo&has_verified=1
I felt this was pretty clever, but you can only use this technique in the day. Thinking about how to emulate this method, I figured the fastest way to do it would be to hook alligator clips to a filament (I was thinking of the bow-tie gum wrapper trick) and then touch the ends outside the cup to a battery.
My concern is the filament, however. Is there a cheap, easy to find material perhaps at a hardware... Comment too long. Click here to view the full text.
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