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Welcome to /diy/, a place to:

Post and discuss /diy/ projects, ask questions regarding /diy/ topics and exchange ideas and techniques.

Please keep in mind:
- This is a SFW board. No fleshlights or other sex toys.
- No weapons. That goes to /k/ - Weapons. The workmanship and techniques involved in creating objects which could be used as weapons or the portion of a weapons project that involves them (e.g., forging steel for a blade, machining for gunsmithing, what epoxy can I use to fix my bow) may be discussed in /diy/, but discussing weapon-specific techniques/designs or the actual use of weapons is disallowed. Things such as fixed blade knives or axes are considered tools, things such as swords, guns or explosives are considered weapons.
- No drugs or drug paraphernalia (See Global Rule 1). If you want to discuss something that could involve such things (e.g., carving a tobacco pipe from wood) that's fine, but make sure it's /diy/ related and doesn't involve drugs or it will result in deletion/ban.

Helpful links:
Some friendly suggestions for posting:
- First ask Google, then ask /diy/. Your question will probably be better received if you do so.
- List available resources (tools, materials, budget, time, etc.)
- Try to use pictures and explain the goal, if possible
- Be patient, this is a slow board; your thread will be around for days.
- Share your results! /diy/ loves to see problems solved and projects completed!

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I'm looking for ideas and schematics pertaining to home made sonor or radar systems. I have a software defined radio but don't know much about this stuff. I want to penetrate and read through my wall which goes into the earth adjacent to my house as I am a literal basement dweller. I keep hearing weird shit through the wall. I wonder if I could rig something using a cyclotron from a microwave oven then read it with my hackrf and display the image somehow? I have rudimentary soldering skills so I could throw together a sonar system pretty easily, I just need ideas and designs.

A while back we ha a snowblower thread. I had just bought the EGO SNT2102 and was eager to give it a first go. Well this morning i finally got the chance.
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We got 6"-8" of some very dense wet snow over the night. The ego went through it like a champ. I was able to get my patio, driveway (twice as long as what you see in the picture, walkup, sidewalk and two of my neighbors sidewalks done on a single charge. Not bad considering how heavy the snow was. My neighbor across the street is struggling with his smaller gas blower. Overall I'm happy with it and it will easily serve my needs.
your mom blows my snow.
That doesn’t make sense.

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>buy a really good SSD
>learn all the autistic shit for not doing static damage to it
>just need to get my laptop open
>check manual - all the screws are the same except for their length
>clearly don't have much to worry about
>ask family for a screwdriver
>none that we have in the house works
>ask extended family
>get a screwdriver
>try it
>didn't work
>go out and fucking buy one
>bring the laptop
>have guy in the shop prove that it works
>get home

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I'd be ok if it was cheap. It's a 15 minute job at most. Well, that plus petrol.
>It's a 15 minute job at most.
how long have you been trying to do it?
If I could unscrew this shit, it would be a very quick job.
but you cant can you
With good advice, I might be able to.

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Hello /diy/.

What is inside the walls of refrigerators? Is it feasible to drill a hole through it and install som sort of a long ass grommet to run a few wires through?

I'm a hobby cheesemaker and need to use an external temp/humidity controller and wonder if I can do that without running wires through the door seal.

It's a long shot, but #yolo.
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yea easy , no problems just seal up both ends with some waterproof silicon. nothing fancy.
Its foam but a modern fridge has the condenser coils under the skin, wrapped around the box.
Its a fucking terrible and inefficient idea but its cheap and keeps them from being damaged in shipping. You need to be careful, you might cut a line.
Tip on drilling through sheet metal: center punch lightly, then use a step bit. Standard twist bits tend to self-feed and leave a messy hole.
>through the wall
Should have done it through the door, just place the hole close to the hinge so the cords aren't moving as much. Not a real issue, as people pay you to take their old working fridges.
People do it all the time. Look up kegerators.

Probably easier just to do it with the door seal, though. You wouldn't even have to cut it as long as your probe wires are small enough. Most such seals are flexible and stuck on with tape; just pull it loose in a small spot, stick the wires behind it, then push the seal back in place as much as you can. You can use a blob of silicone sealant around the wires to close off any gaps.

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Moving to a new city. could only find unfurnished units.

Anyone got any good ideas or experience with making DIY furniture with minimal tools in tow? I forgot to pack my powerdrill even because I am a massive retard, good box of hand tools though. Bonus points if it doesn't look like shit.
We need desks (2 or one long one), a couch, and a coffee table.
>desks (2 or one long one),
4'x8' Plywood sheet cut down the middle w handsaw, on sawhorses or cinderblocks
>a couch,
Old car seats on floor
>and a coffee table.
Old wood spindle taken from job site
>old wood spindle
yeah that could work
>car seats on floor

Car seats on the floor are really comfy, look for german or sweedish from the wrecker, they make office chairs feel like garbage, and they probably cost 10x as much when new.
Modern gaming chairs ARE car seats.
Bonus points for making a stand and getting the power adjustment stuff running, some even have heat and massage.
have fun in your unit in the concrete jungle, ape.
I'm in a similar boat. For the desk, I'm thinking about getting an adjustable shelving unit then setting the first shelf at desk height.

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Late edition

Old Thread >>1745595

All the info you need about 3D-printing: https://pastebin.com/7Sb4TVdy

>Need help with prints? Go to:

If that doesn't help you solve your print problems, please post:
>A picture of the failed part
>Printer make & model
>Filament type/brand
>Bed & extruder temperature
>Print speed

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It's a part that fits onto a large aluminium assembly. It doesn't need to be actual aluminium, but I want it to look as if it's an original part.
weird, mine is smooth (both no name amazon brands) and lets me get flawless organic sides if I'm careful with the print speeds and choose the seam location
Can you split it in two and epoxy it together?
normally in a situation like that, I would split it down the middle, print each side aligned with the bed, then glue it together. Alternatively, if you 3d model the supports yourself, you can place them a bit more strategically and precisely. So you can avoid having a huge block of wasted support material

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Hi all, happy new year!

What would y'all build with access to a 5ft x 10ft CNC? Looking to fill up the project docket and maybe make some beer money along the way.
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>Hello 911, hi my gf and I are in a pickle.
>Yes she's made of plywood, full aluminum headpiece though.
>Hey a 3/4" bit was all I had and it was close.
A decorated frame for a poster I was given that's like 6' long and 3' wide
BTW, OP, I want to thank you. This solves a problem I've been puzzling over for a couple of days. I now have an easy way to CNC-ize something that I thought was going to be a pain in the ass, having to move a giant flat workpiece around. Instead, I'm just going to move the operating tool around. Easy-peasy.
attach a paint sprayer and use it to paint

ye olde thread: >>1748210

0. Electrics ≠ electronics. Appliances/mains/sparky stuff to /qtddtot/ or /sqt/. PC assembly >>>/g/
1. Search web first. Re-read all documentation/data-sheets related to your components/circuits. THEN ask. Show your work.
2. Pics > 1000 words. Post relevant schematic/picture/sketch with all part numbers/values/etc when asking for help. Focus/lighting counts.
2.5. State your skill level if asking an open-ended question.
3. Read posts fully. Solve more problems than you create.
4. /ohm/ is an anonymous, non-smoking general.

>I'm new to electronics. Where to get started?
It is an art/science of applying principles to requirements.
Find problem, learn principles, design and verify solution, build, test, post results, repeat

>Project ideas:

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Really? Thanks! What colors are the bands?
brown black black red brown
I started a new job this week and been getting involved with programmable logic. Our company uses WinCUPL for our IDE but we all think it sucks dick. My boss said I’d be the office hero if I could find a program that’s either better or outputs a logic circuit diagram with a .jed file. Any of you know of anything like this? Would make trouble shooting way easier
Ah . . . that's the thing. In person the two "black" ones are different colors. :-(

One is much lighter and looks greenish.
What is the intuition behind the convolution when the output is determined by convolving the input with a transfer function? Why can't we just multiply them element by element beginning from t0 of the input signal. Every textbook just says, ok lets apply convolution. Why? Things like "the tail of the input sequence affects the output the most" say nothing to me.

Previously /amg/ - arduino & microcontroller general.

An actual some random anon who got tired of waiting for a new general edition.

Microcontrollers (esp32, blue pill, arduino, ...) & single board computers (Raspberry Pi, Banana Pi, ...) welcome.

>What to post
- Questions regarding microcontrollers & single board computers
- Discussion regarding microcontrollers & single board computers
- Projects you are working on

>What should I do with my [insert hardware]?
Look here:

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I just reformatted my code to what you've recommended. It works well but for some reason, -127 did pop up on one occasion?

Got any ideas as to why? Basically I set an integer value as
int invalidTemp = -127;
Then the code runs

if(getTemperature != invalidTemp){
if(getTemperature > 37 || 0){
Turn heater off;
display getTemperature to screen;

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If it helps, the invalid temperature is -127 that I set, but when it displays we see -127.00

Should I assign invalidTemp as
float -127.00
FWIW the best thing would probably be to have a time-out in case the heater is on and you have been getting constant -127 readings (or some other error) for more than 5 minutes or so. Or at least if that's been a problem, but it's still something you want to be aware of the possibility.
If there's something that tells you milliseconds or seconds or whatever since startup, you can compare the current time with the last time you got a good reading. And even that's not everything, because a 32-bit milliseconds could overflow so you need to check the value of (now - then) > timeout_limit to avoid the wraparound.
Get rid of delay...

int period = 2000;
unsigned long time_now = 0;

void loop() {
if(millis() - time_now > period){
time_now = millis();
if ... your stuff without delay()
//Run other code

You can have different time periods/if checks for them and your code will run them ASAP and not after multiple delays. This one also is not affected by millis overflow (50 days +, micros() a bit more than hour.
Anyone know if Lora modules have any kind of forward error correction built in? I read the data sheets but I didnt see anyrhing

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Clean me
protip: You won't because you can't.
Nice try painting me btw retard
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I can clean that.
the normal kind that heats the air up and blows it through vents
Isn't that ineffective?
Actually those are the best. Aluminium ones don't heat the same way
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Ur dumb.

Can I make bike steering bar out of PVC pipe?
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Yeah it’s true... you can cut sheathing off a copper wire with a flathead screwdriver instead of a blade but what should you do? You can hammer a 1/2 inch socket onto a 5/8 but it’s not the right tool is it? You can paint a wall with a bbq brush but a paint brush would probably work better right?
Grease, from a grease gun.
Then I'll get a new one, although I posted that picture, the pipe of mine looks a bit different, it has another pipe inside much thinner, I noticed if I shake it some salt/dust comes out but not from the thin pipe, it comes from around, I tried to pull out this useless pipe but it looked like it was going to break. I guess it just sucks, maybe it was intended for painting or for liquids in general.
If your lug nuts were raped by a monkey at the tire shop and you need 500ft-lbs to get the lug nuts off so you start jumping on your 150ft-lb torque wrench, it probably won’t be long before before you somehow fuck up the mechanism inside.

Grab a breaker bar for $15 for HF if you need to crack loose some tough stuff.

Anyone have any experience printing t shirts? I'm a total beginner and am unsure where to start
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Cricut makes the Cricut printer to cut out iron on vinyl for shirts... I'd start with that. Once you get the hang of it, then I'd get one of their shirt presses to make it easier to iron them on. Then if you actually want to continue doing it I'd upgrade to some more professional means of printing shirts.

But those two items that they sell should get you into it for a reasonable amount of money to decide if you want to continue.
Thrift store shirts
Can you imagine having such a horrible life that you would be this ignorant and childish on a board meant to encourage socializing of building, designing, and creating content?
Not OP here, someone else.

I bought a tee shirt in Thailand for something like six bucks. The girl had a laptop and a printer that printed onto some sort of paper backing, and then she had a hot-press to melt the printed ink onto the shirt. She used (an undoubtedly bootleg copy of) Adobe Illustrator to open the JPG image I gave her, resize it, and send it to the printer. IIRC the "printer" was an Epson. (I love Epsons, they're fucking bulletproof.)

Can't have cost her much, since the shirt was so cheap to make. I was thinking about getting one too so that I could make custom shirts at a night market here (shithole Asia).

Haven't been able to find a similar printer via Googling, it just turns up $20000 automated printers that print directly onto shirts.
>Can you imagine having such a horrible life that you would be this ignorant and childish on a board meant to encourage socializing of building, designing, and creating content?

Yeah, you didnt read them either, you dumb shit:


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I'm 2 semesters into a 2yr Computer Information Systems BS degree at a university. I hate the classes and I am almost positive I can't do this for a job. I need to use my hands. I like cars and electronics. My mom wants me to finish out a 4 year degree, and she is mostly paying for it. What is a degree I could switch to that might open me up to good jobs and allows me to work with my hands?
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Ok boomer
I used to think the same way, I was worried I'd feel like I wasn't doing any 'real' work if I was just using my head, not my hands.

Ended up dropping out of a CS degree at a well respected university. I now work in a bar. It's not great.

Some people can only work with their hands, some people choose to, you'll find a lot more of the former than the latter.

Some pretty good advice there,
Idk about this guys. I dropped out to work on cars to satisfy my obsession with engines, electronics and hand jobs. It's not the most exciting feeling in the world but I could do this shit even if I was brain dead. With school stuff I had to constantly force myself. I don't wanna go to work and do forced shit that doesn't come to me naturally.
How do you imagine yourself involving in all that shit just for "work". Work is 24/7 not 9 to 5. Do you wanna be absent minded for 8 hours a day so you can go live for your hobby after you get out of work? That's like enrolling for slavery. Don't expect to excel if you guys think like this. Maybe I'm stupid idk but I don't want to work.
Have you considered learning robotics? It uses CS skills and you can fuck around with mechanical stuff as well.

Or if you just can't stand programming, consider becoming a house painter instead.

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sup /diy/ anyone do lampworking?

im looking to get started in it I have done some classes. what I am wondering where do you guys buy your supplies? im looking at mountain glass right now.
any recommendation on kilns?

where do I insert endless money?
anyone build their own kiln?
I have a welder everything looks pretty simple I would just need to buy a controller
never bought a torch but i think i was looking at the cheapest shit at mountain.

i actually bought most of the stuff to make a kiln but never found a toolbox i liked enough to proceed with the build. don't have a welder so didn't want to custom build any boxes.

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