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Ey diy.
Due to difficulties encountered when trying to get portable radios with strong encrytion, I decided to make something myself (with some help from an experienced programmer).
Picrelated is an almost complete prototype.
>2W gfsk modulation
>Simplex and repeater capabilities
>256 bit aes encryption in cbc mode
Prototype is single channel only (except in repeater mode).
Wat you think of the design?
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Good luck not getting catched
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>>1114201
Possession and use on my own property is completely legal.
I just gotta lower the output power a bit.
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>>1114199
>radios with strong encrytion,
Just learn Navajo. Worked for the gubment.
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Hey /diy/
For a project I'm working on I want to use a crt monitor and make a new housing for it. I want to install the monitor in a metal housing (which I'll make myself) as part of a bigger device. I'm thinking of using an old AppleColor crt that I have lying around.
My question is, since crt's are usually in plastic housings, can I safely take the crt out of the plastic housing and transfer it to a metal one? What precautions should I take and do I need to insulate the crt from the metal using plastic or someting?
thanks
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Ground the housing. That is all.
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>>1114096
Literally, just this. Also, make sure the flyback lead is well clear of the metalwork to avoid flashover. No real problem otherwise.
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Hello /diy/
I come to you seeking guidance on some entry level electronics. Basically, I need to connect the two prongs into that black plastic adapter. They clearly don't fit so from what I understand I have to perform something called "splicing"
While the average person can probably just google this and do it within a few minutes, i am beyond retarded when it comes to trivial tasks like these - so any practical guidance would be appreciated
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Backside of the black plastic housing
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>>1114054
>While the average person can probably just google this and do it within a few minutes, i am beyond retarded when it comes to trivial tasks like these - so any practical guidance would be appreciated
put some goddamn effort into it and someone here will correct you. until then, fuck off.
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>>1114054
Cut the ends and then melt a cap from a soda bottle onto them
Anonymous
Repair laptop, suspect short circuit USB 2017-01-13 10:55:43 Post No.1113981
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Repair laptop, suspect short circuit USB 2017-01-13 10:55:43 Post No.1113981
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Repair laptop, suspect short circuit USB
Anonymous
2017-01-13 10:55:43
Post No. 1113981
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Yesterday I put a USB stick into my laptop, and immediately the screen went black. Now it won't respond at all. On checking the USB stick, I see that it has foil near the electrical contacts. I suspect this has shift circuited the USB on my laptops motherboard.
Join me now, in a journey to the centre of my laptop, and hopefully we can fix it. Any advice would be appreciated.
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It's quite old now, and not the greatest, but was still very useful. I'm just about to buy a desktop computer as my main work horse, but I was using the laptop to order parts etc. That's going to be a real pain from my phone...
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I imagine that I'll just start from the back and continue pulling pieces off until I find the motherboard
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It appears that after taking out all the screws from the back, the keyboard side actually comes off first. Seems to be a bit stuck though, going to try to remove it without breaking anything.
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Hello Diy, I need your help in making a design. I need to build a prototype model for a coffee machine of my own design. I want to make my design stnsd out from the class by making a mechanism which loads a new shell in and ejects the used shell into the waste grill. The idea for the mechanism in my head was kind of like a shotgun .
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>>1113951
Pic related is my original design. The teacher just told me that my design and mechanism is basic.
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>>1113951
>I need to build a prototype model for a coffee machine of my own design.
>I need your help in making a design.
You know that cheating in education is cheating yourself, right? I would assume that the point of the project is to teach you how to translate vague ideas into buildable schematics and then get a practical understanding of building to those schematics. So get to it.
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>>1113952
I'm a total gun novice but I can't see how the lever for the next shell is getting triggered to load in?
>>1113951
And your sketches aren't giving me a great insight into how you plan for the mechanism to function either.
I'll be honest, sometimes the simplest way is the best. My machine just drops the used one into its bucket thing, and I put a new one in the top. Gravity, man.
Do love that your teacher called it "basic" though.
Anonymous
How fix? / Household electrical general 2017-01-13 09:14:50 Post No.1113947
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How fix? / Household electrical general 2017-01-13 09:14:50 Post No.1113947
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How fix? / Household electrical general
Anonymous
2017-01-13 09:14:50
Post No. 1113947
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So I buy a house, and after about a week into moving in, I keep finding little things that the sellers neglected to keep in decent condition (as sellers do).
This one is a simple fix I'm sure, but they've managed to rip the outlet out of the wall, and the screw won't hold it there any longer. To add to this, and my own inexperience, there's no internal bracket thing.
So, how am I best to secure this thing back to the wall without a huge mess or making a new hole? There's a stud about an inch and a half away, to the left.
> inb4 someone tells me to turn off the power
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Excuse the fucking phone with its fucking rotational issues.
Photo of the stud.
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>>1113953
It's New Zealand (can't you see the plug style?) and it's not standard here. Or at least I've never seen a job so shoddy before.
But hey, some people just don't give a shit, right?
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Hello /diy,
I am making a wallbed (pic related) and it is for my condominium which is roughly 535 sq ft.
I want to make this thing because as of right now, I only have a studio style kitchen/living room, a bedroom, and a bathroom. I want to put this thing in my bedroom so that I can then convert it into a living room when necessary. Essentially adding a room to my condo.
My problem though, is that I want to have a couch sectional attached that can be used when the bed is in the stored position. While I have the knowledge of professional cabinet assembly and access to expensive CNC machinery that I can program, I don't know how to build a couch, and much less, the upholstering that is involved. Is there a book that any of you could recommend that may be useful to me? I recognize that furniture building is an art, especially couches, but I do believe I am up to the challenge. I've made it this far.
Any other tips or constructive criticism is appreciated and I will give more details of the condo if necessary.
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I modeled the room to give some extra clarity and to show how the wall bed would fit.
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Top view.
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Your wallbed is called a Murphy Bed.
Couch making.... build a frame. Use s spings and clips to build the seating suspension. ( buy online from an upholstery supply shop. )
Upholster the frame. Buy or have pillows and cushions made.
So I made a stupid decision and bought this tv mount bracket that screws into an ikea tv center. The problem? The tv center has this black glass top panel, which covers up where the mount has to go (I colored in the glass on the instructions). It's tempered, so there isn't a way to cut it. Any hack ideas to salvage this thing? The best answer is probably "package it up, take it back to ikea and go get a real wall mount" but ikea is an hour away.
Can't find any mention on the website/instructions/store that the two were incompatible.
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>>1113910
It might be an error on the piece in question. It happens all the time. Go early on a Tuesday or prepare to wait for ever.
>t. used to work at that shithole
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>>1113911
If it's an error, it has to be with the design of the glass panel not having a hole where it should have for cable/tv mount. See pic.
I realized that it covered up the spot for cables, but I didn't think about the mount.
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>>1113910
'ave you got the right panel for the TV unit?
>http://www.ikea.com/gb/en/products/storage-furniture/shelving-units-systems/best%C3%A5-top-panel-for-tv-glass-black-art-00295304/
that (abnve link and pic) appears to have a cutout (whereas, your pic dont - ?) - Im on Bong IKEA, but, product numbers should match - dunno, you maybe just have 'a shelf' there, and not the 'TV top shelf' (with cutout) you need?
Anonymous
ultrasonic range sensors 2017-01-12 11:51:03 Post No.1113753
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ultrasonic range sensors 2017-01-12 11:51:03 Post No.1113753
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For those of you who have used pic related (HC-SR04 ultrasonic sensor) and are familiar with its operation/quirks/limitations, I'm trying to decide whether or not ultrasonic would work well in the application I plan to use them for (I can get a pack of 10 for $15) or if I need to go with a [more costly] scanning LIDAR solution instead.
Here's what I plan to do: I was thinking of getting a bunch of them to use with my car to display data readouts of each sensor on an OLED display (no blinding backlight, variable brightness). I plan to use this as a parking sensor that actually tells me how many meters I am from an object. Since my Camry has electronic power steering, braking, and throttle, I'm sure I could use this to implement self-parking, collision avoidance, and adaptive cruise control. I don't doubt ultrasonic range finders will work fine for parking applications, where the vehicle is moving at speeds of 5mph or less, but I'm unsure they'd work reliably, if at all, at cruising speeds? Would wind flowing across the car cause the detector to clip and/or distort the ultrasonic sound wave to the point where the signal is unreadable or no?
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>>1113753
It only works for ranging out to 500cm... for an adaptice cruse control you are going to want a lot more than that.
For parking at slow speed i think it work well as a distance indicator and a collision warning.
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>>1113753
Not good enough, nor designed for exterior use.
Start reading here.
http://www.newelectronics.co.uk/electronics-technology/an-introduction-to-ultrasonic-sensors-for-vehicle-parking/24966/
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>>1113757
Thanks anon. LIDAR it is.
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Are there any interesting project to do with pic related to kill an hour? My son made a sword out of it and now I have a sheet that I'm not sure what to do with
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Put under the chairs to stop it scratching the floor
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My dad once bought one of these to make the upholstery of a coffe table just so it gets confy to rest our feet over it
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How much of it is left?
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Hey /diy/
How hard would this be to make?
What kind of light and side panels should I use?
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>>1113653
Not that hard.
Make wooden frame
Attach white acrylic sheets to sides
Put simple light fixture inside.
I would use one of those single IKEA hanging lamp cords you put that shade one. Uses an uno style shade which you can make the box into.
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>>1113653
About as easy as it gets.
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>>1113653
making something they make in china and can buy for 3 dollars
ishydmt
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I finally got a new microwave
My old 1986 magic chef still works but I think it's slowly becoming a fire hazard so I'm throwing it away.
Is there anything worth taking out of an 86 microwave
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>>1113645
The transformer, even if for some stupid reason you don't want to endanger your life with high energy high voltage experiments the copper in it is worth some money as scrap.
PS. modern microwaves have high frequency transformers in them, nothing of value.
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>>1113645
Give me the transformer. They are gigantic in those 80s microwaves.
With the transformer you can make:
Spot Welder (like the one in this vid)
Ultra Heavy Duty Power Supply
Lichtenberg Figure Wood burner
Metal Melter
Super Electromagnet
With 2 transformers you can make an arc welder.
-The fan can be used for many things.
-There are several nice heavy duty switches.
-If it has a turn table motor, those are great for a variety of things from small electric generation to a fly tying rotary for drying fishing flies.
Remember the big ass capacitor needs to be shorted to drain it. Google how to do that safely before working on it.
Don't listen to: >>1113646
He doesn't belong on /diy/.
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>>1113658
Thanks
Think I can use it to weld exhaust pipe? like stick welding?
I've been wanting to make an exhaust on my garage with a rubber connector so I can leave my car running in the garage
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I bought a headphone/speaker amplifier but my speakers are connected through rca into the right channel and then a connection from the right speaker to the left speaker. Is there a way of connecting the connector for the left speaker into a rca cable so i can plug it into the left channel of the amp output. (pic related)
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Your question is highly confusing. I believe you are asking how to hook the speaker shown up to an externally powered input bypassing the internal amplifier. Correct?
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I'm sorry if i'm not clear.
I need an rca input for my left speaker just like the input cables that are plugged into the shown right speaker in the picture.
My question is how I can connect the wires plugged into the right speaker to rca plugs so i can connect them to my amp.
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>>1113643
You just want to know how to put an RCA end on speaker wire?
https://www.youtube.com/watch?v=vIPVIvy4ckU
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How do I install a lamp here?
I tried following a guide I found on google but the result was that the light worked but I couldn't turn it off and another light didn't turn on anymore.
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These are the switches that control the lights in the room.
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>>1113566
Jesus, that's nasty.
You used the wires going to another light to power that one. You're going to need a tester, and find out which wires lose power when you flip the associated switch. Otherwise, you'll need to run a new wire to the switch, then back to the box. This is unlikely, as that is definitely a light box, but those are typically not used as a junction box like that. Pretty ghetto.
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These are the lights. The third one is is behind a wall not visible here.
>>1113568
The upper switch controls the light on the left and I thought would also control the to be light on the right.
The lower switch controls the 3rd light.
My attempt of installing a light left the top switch working as usual, only controlling the left light, the new light not able to switch off and the third light not working at all.
So yea, I've got no clue how any of this stuff works.
Any help to make this work is appreciated as I don't really want to spend money to hire a professional for a fucking light installation.
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Ok, this is lab cell disruptor.
What it does is cavitating shit out of materials that came into contact with the probe in liquid environment.
I intend to blast my sauces (you know how, for example, mushrooms and stuff like chlorella not digested by humans very well), beverages (including strong spirits) and medicinal extracts with it.
Problem is, those fuckers are expensive.
Looking for something to read up about cobbling them up from what you can buy on ebay.
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This is what chinese shops sell for $50-60.
A controller board and oscillating film jammed between steel/aluminum cylinders.
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>>1113500
please report back after testing this down your urethra, you know you want to.
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>>1113502
>trusting a chink device that plugs directly into mains
natural selection at its best