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/diy/ Do-It-Yourself

Threads added between 2013/10/02 and 2013/10/09

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From 2013/10/09 22:00 to 2013/10/10 04:00 (11)

Most viewed threads in this category

Rewiring a 5v battery bank for 10v

8 more posts in this thread. [Missing image file: 18650 charger.jpg]
Kay, let me preface this with saying i'm a complete tard and never paid attention in my highschool electronics class. So - I own a few solar backpacks. They are the first generation Voltaic ones, that have 10v output solar panels. They originally came with "jetpack" batteries, which were essentially 2x 18650's wrapped in plastic and a charging circuit that was optimized for the backpack. Since these are first gen, the batteries are all now damaged, no longer holding a charge, or lost. Rather than replace them with new ones, i was hoping i could just buy new battery packs. Than i found this on DX: >http://dx.com/p/enb-micro-usb-rechargeable-18650-mobile-power-bank-charger-white-max-1-5a-220016 Looks *PERFECT*, except instead of a standard adapter tip, it uses microUSB(no problem, i can get a converting tip) The bigger issue is, the charger is designed for 5v. Is there a simple modification i can do to allow it to take in 10v? I understand that by doing that, i would make it no longer possible to charge through USB, but thats not an issue since i can use the same tip adapter to convert the 10v wall charger that came with the backpack. <----picture of the guts. If i managed to get this shit working, it would be ideal, as a lot of my camping gear uses 18650's so having them so easily be pulled from the pack would allow me to use them in my radio or flashlight in an emergency. Thanks.
2 more posts in this thread. [Missing image file: pewpew.jpg]
hey, so here's the situation. I need all the following to happen while a button is pushed down: >LED1 ON I'm fine with this circuit >LED2 blinks I know how to do this the usual way, but I need a super compact solution, as small as possible. Is there perhaps just some component I can add to the circuit? >A sound plays A custom sound. I've never built my own sound module so I'm lost on this completely. Again, it has to be really tiny. This is probably the simplest of things to you guys, so I come before you humbly. I only have the most basic of knowledge in this stuff, I don't have to use it often. I'm fine on soldering and assembly, I just don't know what components I need. I'm not finding anything helpful online so far, so I'm making this thread as I continue my search

Home Buying

0 more posts in this thread. [Missing image file: house wallpaper.jpg]
I'm tired of throwing money away each month renting. I like doing repair/maintenance stuff myself and want a garage/dog/yard/garden. Is this a good time to buy a house /diy? I don't want to end up screwed if the housing market crashes next month. If it's a good time to buy, what tips does /diy have for what I should watch out for in a house?
10 more posts in this thread. [Missing image file: Blue_Circle_o.jpg]
What is a good way to cut out perfect circles?
0 more posts in this thread. [Missing image file: IMG_1258.jpg]
I bought a TRENDnet TEW-L208 for an antenna at Fry's today. I saw the SMA and knew I had adapters for both M and F so I didn't worry about it until I opened it up and was getting ready to connect it. Turns out it was reverse polarity. I now need an adapter to get from this to SMA F preferably. Whilst searching the interwebs I quickly discovered half of the world says this is RP SMA M and the other half says RP SMA F. I know what the box says. What do you say /diy/?
3 more posts in this thread. [Missing image file: holyaircompressor.png]
Quick electrical question. I'm quite familiar with DC but not so much AC (learned on cars). I wan't to get involved in home electrics and wiring and I don't understand the concept of the neutral wire. Can someone explain why it's not just 2 wires?
2 more posts in this thread. [Missing image file: fan.jpg]
I need a case fan to replace the fan that died in my mini fridge. It has to be 90mm x 25mm It has to have a 2 pin connector It has to be 12v and .16a What's the best one I can buy? I don't care about how loud it is, it just needs to move the most air.
7 more posts in this thread. [Missing image file: close image.jpg]
Hey /DIY/ I have a problem. Got a Schwinn bike from Sam's club and something on the stem broke. I heard something snap when I first assembled it but nothing seemed wrong until last weekend. The handlebars and head set started moving around horizontally. Its a scwhinn S29 mountain bike. Frame is alu.
2 more posts in this thread. [Missing image file: gunter.png]
Alright DIY I think I've finally managed to ruin my saucepan from college. its thick aluminum which is painted black and has a non-stick coating. the non stick was giving up already, but I accidently let it boil dry and it filled the kitchen briefly with a hell of what smelt like a toxic smoke, so needless to say its life as a cooking instrument is dead. Anyone have any ideas for how to reuse a metallic vessel which is of relatively limited capacity and not food safe? I don't think I'd be able to make a forge or anything that could be potentially dangerous here as the neighbours would likely call the city or something (paranoid jerks)

glass cutting

0 more posts in this thread. [Missing image file: sdgfdf.jpg]
hey guys I have access to a shit ton of upper-end spirit bottles (ie belvedere, grey goose, chase, absolut etc) and thought I might as well try make something out of them, I have a bottle cutter on order, should be here in a couple of days now. basically i have around 40/50 empty abosolut bottles of all types (I also have the one in the pic) I am going to make goblets out of them, by cutting the top 1/3 off and attaching to the base, I have bought some industrial strength glass glue but was also thinking about trying to torch the glass together? would this work with a simple butane blow torch? also thinking about using a soldering iron to curve where the glass is cut instead of sanding it down, would that be a better way of doing it? These will mainly be for friends and family (christmas haha!) but I will likely put some on ebay too so I want to make them to a high standard. any glass cutting/craftsmanship advice is welcome
8 more posts in this thread. [Missing image file: ]
Ok /DIY/ we all are well acquainted with the use of rocket candy and black powder in homemade rockets as fuel; but can anyone provide any alternatives? Not necessarily better ones either, just relatively simple to implement ones. I've heard of using Hydrogen Peroxide, but I can only get my hands on 30 percent, and I don't know what to use with it. Tl;dr. Need rocket fuel besides rocket candy and blackpowder. Must be DIY-able.

How do I wire this thing?

9 more posts in this thread. [Missing image file: DSC_0032[1].jpg]
Hey, sorry to take your time with this but I googled and didn't turn anything up. I'm doing some headphone wire repair which I thought would be simple and decided to get the slim version of the stereo 3.5mm jack since it would be easier to heatshrink/sleeve than the standard, but I can't rightly guess how to wire it. Any help? Thanks.

Building my own desktop with $1000

6 more posts in this thread. [Missing image file: 1359703410928.gif]
So, I'm thinking about selling my current laptop and using the money to build a new rig. I'm expecting maybe up to $1000 from it. Where can I go to find out everything that I need? Where can I go to get good prices? I'd like to make it as awesome a gaming machine as possible on this budget + for awesome case but not essential
7 more posts in this thread. [Missing image file: The+Fast+And+The+Furious_84d779_4807405.gif]
Is there a good way to drive high power leds in a series-parallel array? In my application they'd be driven by a simple linear/switching psu. The voltage would be regulated by a mosfet controlled by a microcontroller. What sort of component would need to be put in line with them to keep them from killing themselves? Would the standard current limiting resistor from low power applications be enough? Or is there a better option?
3 more posts in this thread. [Missing image file: polyscience_7306_immersion_circ_z_a.jpg]
Hello /diy/. Here's my question. I'm a trained chef, I did alot of sous-vide cooking in restaurants and etc. What I would like to know is, is it possible to create a home made Thermo Circulator? Picture related, it's their old model (you can see more of the parts, I guess) You can basically get the temperature of the water (normally in the 60C) for extended period of time, and the newer models have a way to move the water (fan?) so the heat gets distributed evenly. How would I go about building a little machine for cheap? I really don't want to shell a 300$ for a cheap ass home version. Profesionnal version (the one I'm used at) is 900$
12 more posts in this thread. [Missing image file: lemayoface.jpg]
I'm planning on buying beat up guitars on ebay and craigslist and then fixing them up and selling them. How profitable is this and how easy is it to learn how to fix cosmetic damage on a guitar? I wouldn't buy anything with fucked up pick ups yet, just chips and scratches. I found a nice guitar for $300 on ebay and without all the damages it goes for $800. I don't see why this wouldn't be profitable but I've never done this before. Does this sound good? I've already learned a bit about how to fix chips and I have previous knowledge on how to string guitars and how to adjust truss rods. Also any advice or links or books would be appreciated.
3 more posts in this thread. [Missing image file: Verisign_logo.jpg]
Hello, i'm trying to spoof the vod server of my satellite receiver last year i had an old version of the set-top-box, it was using an HTTP connexion, i could spoof the server with a raspberry pi as a DNS and WEB server on the new set-top-box, they are now using HTTPS (ssl) and forbidding to set a local DNS server so i setup the raspberry pi as a gateway, and running a web server with SSL support, then routing address with iptables to redirect to the server when i sniff the connexion, everything is running as expected, the set-tob-box makes a dns request, get the real ip of the webpage, then ask the page to the real server, the raspberry redirect the ask to my server but, the set-top-box get an error, i guess it is from the unverified CA of the certificate (which is self-signed) when i simulate on a browser, firefox gives a warning about self-signed and untrusted CA, but if i allow i can go further and make everything works as i wanted so my question is : is there a way to make that work? i tried to redirect the page to another server using a trusted certificate (google.com) but still get an error i also tried to iptable the 443 to 80, but it still try to comunicate with SSL protocol, is there a way to make a clean protocol redirection? or i'll still need a trusted certificate? and last question, as everything is offline, is there a hacked/leaked trusted certificate available to download? i just want the stb to get only a spoofed page, i thought a man-in-the-middle attack would be working, but no
1 more posts in this thread. [Missing image file: IMAG0009-1.jpg]
Any tips for washing cellular concrete? It has coffee stains and stuff like that in it. Soap and water ain't really doing anything since its "hollow" for a lack of better word. Would soaking it for few hours help anything?
2 more posts in this thread. [Missing image file: pax-wardrobe-with-interior-fittings(...).jpg]
First time on /diy/ so be gentle. I'm sure this is asked for a lot but would anyone know of any where I can procure decent wardrobe/closet patterns. Had a google and only managed to find extremely traditional designs. I think I could design and build my own. As it is my first foray into something this large though a plan would be good for peace of mind. Thanks

Trying to find the correct LED

0 more posts in this thread. [Missing image file: 29166528_215306_full.jpg]
I recently purchased 2 velleman mk103 sound to light units which I will be installing inside the eyes of the deadmau5 head I'm building. Without any real electronics knowledge I've been able to assemble them and I'm prepared to solder them;however, I would like to replace the provided red LEDs with white ones.I'm assuming size and voltage are the variables for making the swap but I figured I would ask the experts for help before I run out to Radioshack and end up buying something incompatable. The red LED's are listed in the instructions as L-53SRD-D. I would provide datasheets for the unit and LED but I'm assume posting a url would trigger flood detection.






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