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Archived threads in /diy/ - Do It yourself - 264. page

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For those electrically inclined, I have a question.
I rent a studio/guest house, and I just found out that the landlord had been using some kind of voltage increasing equipment to step up the usual 120v (US) mains power to 135v to my unit specifically.

What reasons would somebody have for doing this? Utilities are included in my lease, and i have a 220v outlet specifically for my window mounted air conditioning unit, which i have heard is cheaper to run than a 120v window unit.

I have also noticed that since this equipment has been turned off, i get fewer headaches, though this could be a placebo effect of sorts.

I am just trying to understand their logic in doing this, as it has cost me a few hundred dollars in pc power supply replacements and line conditioning equipment before i had realized they were doing this in the first place.
25 posts and 2 images submitted.
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>>1119959
>I just found out that the landlord had been using some kind of voltage increasing equipment to step up the usual 120v (US) mains power to 135v to my unit specifically.
Gonna need more details.

>i get fewer headaches, though this could be a placebo effect of sorts.
If 135v is giving you headaches most of the rest of the world would probably be dead, seeing as they use 220.
>>
>>1119961
With the device turned on, i get 136v as read by my multimeter, but my APC LE1200 says it is receiving overvoltage and compensates. with the device turned off, i still get 134-136v, but the line conditioner does not attempt to compensate.

I do not know what the landlord is using, but i do know that power comes onto the property through the main house and from there it is run to mine.

Would I need an oscilloscope to find out what is really going on here?
>>
>>1119961
I should also mention, while whatever device the landlord is using is active, and the line conditioner is correcting for overvoltage, the corrected voltage changes from 121v, to 118v and back again every 3 seconds. Is this normal?

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https://www.youtube.com/watch?v=C1D51aO-Acg
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>ask a farmer if you can get some big rocks from his field after harvest or before planting
>take them home
>put them in a circle

Wow
>>
Much wow
>>
>>1118726
Or you could just, you know, put some rocks in a circle. Making things like a fire pit overly complicated is why people will look down on /diy/.

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Hey /diy/ trying to cast a grippy tread to 8in wheels for a robotic project. About 20 to 30 pounds of weight on four wheels with a tank like drive system so there will be some rubbing while turning.
Any tips on casting polyurethane that I should be aware? Does it bind with ABS straight from the 3D printer? Cheap materials that I can substitute to experiment with different types of treads?
19 posts and 3 images submitted.
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>>1118719
>Does it bind with ABS straight from the 3D printer?

Don't know.

I DO no that you shouldn't rely on bond strength for something like this. You need positive mechanical engagement between the two. Even just a stippled/bumpy/deeply-textured surface will be much better than a smooth or smooth-ish one.

Probably doesn't really matter for this, but it's good practice, at least.
>>
There are some grooves to prevent from slipping over the wheel and maybe the increased in surface area would help do the bonding. I'd probably would rough up the surface with a file
>>
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Obvious FRC poster is obvious. What are you doing with six inchers this season? You can easily get away with 4" wcd style.

Anyways, as it appears in your pic, you could probably get away with, but only just. Like other anons said, needs more mechanical engagement between the materials like pic related.

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What is the best finish for wood tool handles?

FYI: I have given up on tung and linseed oil. They look good at first but the moment a working man's touches them they soak up all the grease and dirt and look like shit and clearly offer little to no protection for the wood.
18 posts and 3 images submitted.
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>>1118164
blood and sweat
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>>1118164
Piss and vinegar.
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>>1118164
srsly how do they "clearly" offer little to no protection for the wood?
what protection do you need more? are you going to hang them on the wall or use the fucking tools

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How do I get the mouse menace from inside my Tupperware dish to killed outside? I'm not sure if sliding a paper under the Tupperware would do the trick.
95 posts and 13 images submitted.
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>>1117556
use cardboard
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>>1117556
The black thing is the bottom to a trap. It's got peanut butter in it. I literally saw the mouse enter the trap and exit it without it activating the trap.
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>>1117557
Good idea, I'll look for a thin piece of cardboard. Actually I've got a clipboard, but that doesn't solve the problem of me killing it. There are holes in my residence and I have a shit landlord, I know it'll find it's way back inside

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Post your favorite workbench pics, yours or other's
31 posts and 11 images submitted.
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sweet bench.
i just use an old set of drawers with a solid, thick piece of kitchen worktop bolted to them.
simple,works well, job done!
>>
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Built this about a year and a half ago for the mitre saw, which is why it's lower in the middle. Figured I'd make it longer so i could use it for other shit without moving the saw every time.. i made a kind of leaf thing for if i move the saw. Used a bunch of 4x4s i already had. The plywood got free from my dad, he worked in a newspaper press and they use them to protect the pallets of printing plates and always took the wood cuz it was free. I think i spent like 15$ on 2x4s and a 25$ box of screws. It's almost like OP pic x2 with a low spot in the middle.
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>>1117079
Reasonable enough. You dont need to sand it and make it all pretty like OP's 2x4s are like $2.50 for 8ft at home depot. You can use that shit OSB board for the top, it would be sturdy enough. Just use minimal amount of screws to hold it down so you can replace it easily if it gets fucked up. Get some ideas from google on shapes and shit. Good project to start with for a young /diy/er.

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last >>1102621

pastebin.com/9UgLjyND

>I'm new to electronics, where do I get started?
There are several good books and YouTube channels that are commonly recommended for beginners and those wanting to learn more, many with advanced techniques. The best way to get involved in electronics is just to make stuff. Don't be afraid to get your hands dirty.

>What books are there?

Beginner:
Getting Started in Electronics Forrest Mims III
Make: Electronics Charles Platt
How to Diagnose and Fix Everything Electronic Michael Jay Greier

Intermediate:
All New Electronics Self-Teaching Guide: Kybett, Boysen
Practical Electronics for Inventors: Paul Scherz and Simon Monk

Advanced:
The Art of Electronics by Paul Horowitz

>What YouTube channels are there?
https://www.youtube.com/user/mjlorton
https://www.youtube.com/user/paceworldwide
https://www.youtube.com/user/eevblog
https://www.youtube.com/user/EcProjects
https://www.youtube.com/user/greatscottlab
https://www.youtube.com/user/mikeselectricstuff
https://www.youtube.com/user/AfroTechMods
https://www.youtube.com/user/Photonvids
https://www.youtube.com/user/sdgelectronics
https://www.youtube.com/user/TheSignalPathBlog

>What websites feature electronics projects or ideas?
http://adafruit.com
http://instructables.com/tag/type-id/category-technology/
http://makezine.com/category/electronics/

>Where do I get components and lab equipment from?
digikey.com
jameco.com
sparkfun.com
ramseyelectronics.com
allelectronics.com
futurlec.com
ladyada.net/library/procure/hobbyist.html
mouser.com
alliedelec.com
newark.com
ebay.com

>What circuit sim software do you use?
This mostly comes down to personal preference. These are the most common ones though:
NI Multisim
LTSpice
CircuitLab
iCircuit for Macs

>What software should I use to layout boards?
Circuit Wizard
ExpressPCB
EAGLE
KiCad
339 posts and 76 images submitted.
>>
Can anyone tell me why when a power supply goes bad it starts pulsing?
Got a LED from china and it came with its own power supply, so cool, whatever, I plug it in, wire everything up, and the thing works for maybe five seconds of me briefly plugging it in to test it before I solder the LED to the heatsink, but once it's all done the thing starts blinking.
I've had this happen before whenever a power supply I get is lower rated than what it's supposed to be, so
>Buy a 10W LED with a "10W" power supply that's really only 3W
>Plug that shit in
>The nigga dies and starts blinking

The extent of my knowledge is watching big Clive videos and 10 years of tinkering.


tl;dr:
What's the DEEAEEEeAAAALLLL with switch mode power supplies?
Wait, I only googled "Power supply blinking". Imma google "Switch mode power supply blinking"
Nope, doesn't really help. Just that it might be doing that to sense if there's a draw.
So the current detection might be fucked?
>>
>>1115120
Okay /g/ stupid here
I am trying to make my atmega32 work with a 16x2 LCD, the standard JHD162A. Now on the internet people say it needs a high to low pulse to make it work, does that mean the pulse needs to be

HIGH all the time, LOW, then HIGH again

or

LOW all the time, HIGH, then LOW again
>>
>>1115157
On enable? The latter. See the datasheet or copy someone else's code.

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Hey old guys, how much would it cost to build a shipping container bunker? Thanks.
49 posts and 6 images submitted.
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>>1109370
about tree fiddy
>>
The dirt would cave in the roof and walls if you bury it. Shipping containers are designed to have weight vertically applied to the frame, so you'd have to make a concrete box around it in order for it to even work. There's better ways of making a bunker.
>>
Cheaper to pour a concrete dome then dig under it

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I love this bottle and its mouth. I think it will make a great laundry machine, but I have no idea how. Care to share some blueprints?
16 posts and 9 images submitted.
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The so called mouth
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>>1122514
>I love this bottle and its mouth. I think it will make a great laundry machine

sounds like you want to fuck it.
>>
>>1122514
take plastic bottle
replace bottom with a door
stick water hose in the mouth

attach to paint shaker
or attach to motor

I'm working on a project involving a drum style flip clock.

The problem i'm having is I need it to be battery operated and the clock I have to modify is AC powered.

TLDR: How can I convert an AC clock into a battery operated clock?
11 posts and 1 images submitted.
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Replace the motor with a servo.
>>
>>1122328

is that really the easiest way?
>>
buy a battery clock and put it in the AC powered clock

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Hey /diy/, I'm looking to build a thermal grill to recreate the "pain box" from Dune. I've found a few different versions online but I'm still confused about assembly.

https://hackaday.io/project/6577-dune-pain-box-a-hackers-replica
This version is quite simple but it looks a little sketchy, I'm also not sure what type of power supply to use or how to hook it up.
My main concern with this build is that I don't understand how the peltier devices will create the thermal grill illusion without the use of metal bars. Placing one's hand directly on the TECs doesn't seem very safe.

Any advice/suggestions would be greatly appreciated!
7 posts and 1 images submitted.
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https://www.youtube.com/watch?v=otweN9sCSd8
This version looks much safer but also more complicated. The creator lists most of the components but doesn't explain assembly.
>>
Safe? I thought you were building a pain box, not a pussy box.
>>
>>1122329

Kek

How do I make my eyeglass frames great again?

My eyeglasses frame paint is worn out and it went from shiny black to that sun bleached, dull gray.

I've read online that people use nail polish, enamel based paint, testor's modeling/figurine paint or even a sharpie.

Eyeglass frames are always exposed to warm skin and sweat so that's something to keep in mind.

Has anyone painted their eyeglasses' frames before?
12 posts and 1 images submitted.
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>>1122216
a bit of heat on plastic will turn it black again, but you better practice. Fine line between making it look good and bubbly melting flaming glasses of death.
I've had folks use the same stuff they use on car bumpers to make them black again. Armorall or some stuff like that.
I have metal frames. Worst thing that happens is the finish gets rubbed off. Quick shot with auto clearcoat fixes them right up.
>>
>>1122216
haha blindfag
im 20/20
i would sharpie them
>>
I'd 3D print some if they don't end looking like shit

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hoping this is not the wrong board for this although after all its a diy inquiry... how do you stop getting eliquid in your mouth?
16 posts and 2 images submitted.
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You stop getting it in your mouth by not vaping.

Also, this board is for the facilitation of productive things. So, no, this isn't the right board.
>>
>>1121964
by not vaping

though I know you are too cringey to stop, so the answer you want is a fine mesh

figure out the surface tension of propylene glycol (the liquid in e-liquid) and figure out how small you need to get to allow the liquid to not get through, but don't get too small or the vapor wont be able to get through either

watch out its not too thick or it will wick the liquid
>>
>>1121964
Nice pic, I have the nano version of that. I just Jimmy the Juiceman - Creme Brule in 3% which is a high VG. I've spent waaaaaaay to much money trying flavors that give a cold throat hit and this is the only one I could find. I smoke this all day and my throat never burns even once. This fluid is rated for a max of 18 watts but it tastes like shit that high. I keep it at 10 Watts and it's great. The trick is to just change your coil out often. They don't last for ever, you are literally burning it up each time you hit the button. I just use the regular square ones but I hear they've come out with some new cylindrical ones like in the pic you posted. Good luck

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hey DIY, I am into coding and want to automate some things in my house
e.g. when I get in bed I want a sensor under it that turns my LED light off just things like that

what robotics type things would I need to do things like this?

I've considered just simple switches but I want some logic going on when multiple things are used
6 posts and 2 images submitted.
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>>1121914
kys
>>
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>>1121915
?
>>
>>1121914
Start reading this like this

http://makezine.com/projects/building-a-home-automation-system-with-openhab-to-control-leds-wirelessly/

You'll probably end up with a zwave zstick on a raspberry pi for a couple troller. Which is fine.

So I just found this board for the first time and I'm in a place in my life where I would like to start a small business and work for myself. I currently make around 65k being a network admin monkey and I'm tired of it. My true passion is working with my hands. I have been a volunteer builder for Habitat for Humanity for a few years now. I have remodeled the majority of my house and I've done a number of jobs for friends and family for no pay to learn the ropes. I'm experienced enough to do just about any cosmetic overhaul including drywall, painting, texturing, kitchen remodels, bathroom remodels, etc.

So how lucrative could this be? Just looking for a ballpark estimate, assuming I market well and have a steady number of jobs on a daily basis. I live in Texas and via Nextdoor, I see there is a huge shortage of handymen, carpenters, and small job contractors in my area. Could I fill this niche with no license and would it come close to the 65k I make currently?
6 posts and 1 images submitted.
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>>1121822
This is a question for the Biz board, as you are not actually asking a DIY related question.
>>
>>1121822

Have you seen the prices on etsy for half a log slathered in laquer marketed as a shelf?
>>
>/diy/ business

ALL business is /diy/, less training.

I think you're asking if you can make a living by suckering people out of their money.

The answer is "yes" but I don't think you'll be well liked in the end.

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