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File: maxresdefault.jpg (102 KB, 1280x720)
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Not into blacksmithing or anything but I have a layperson's interest in knives and historical weaponry.

Anyways, why does the most skilled and intelligent blacksmith on Youtube who is as much a historian and an innovator, and who happens to put the highest production value into his vids only have 59k subscribers?

https://www.youtube.com/watch?v=4fgXGs07W0U
>>
because the majority of youtubers are 14 years old and want to watch alec steele or king of random instead.
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>>1336667
the best selling book in america in the 1920s was an autobiography of a famous lawyer. sold over 50k copies. today best sellers are pornography that sells millions of copies. its not even good porn and there is so much free e-lit that is better written. but there is some light spanking and normies think its extreme BDSM.

normies are fucking retarded.
>>
>>1336667
>>1336836
this.

that, and the majority of the really good craftspeople are making stuff, not putting it on youtube. Niels is talented, but he's no Owen Bush, Patrick Barta, J. Arthur Loose, Fabrice Cognot, or Peter Johnsson, just to name a few.
>>
>>1336836
Or its just noise.

Dislike the well shot, but fuck all explained videos.
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>>1336836
>alec steele or king of random
You know these shoudn't be next together in one sentence, let alone be compared.

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So it rained 2 days ago and now my furnace won't heat my house, which sucks because it's like 30°F outside and in my house. Everytime it "starts up" it just gurgles then shuts off. It's a Heil Model #h9mpd050f12a1. Can you help me fix it without calling a tech? Pic related
4 replies omitted. Click here to view.
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>>1336444
Appreciate the breaker tip, staying alive is nice, anyways this is the innards, which hoses are the ones you were talking about?
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>>1336387
you sound retarded so just call the gas company and they will send a tech.

If you are super retarded, take off the front panel and see if you can see a red button / valve, that controls the pilot light. The furnace probably won't start without it. If the button doesnt work use a bbq lighter while pushing the knob down and to the right.

Figure it out noob.
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>>1336509
the bottom part is the fan / blower, the top part probably has the pilot light.
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>>1336509
The black tubey things that connect the big circley thing to the two smaller, yet still circley, circley things.
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>>1336509
The vaccum switches are circled in red, the hose ends are circled in blue.

Basically all these are doing is checking to make sure there is air flow through the system. If there is an obstruction in the little hoses or the nipple ends they connect to, the diaphragm of the switch doesn’t pull in and the controller doesn’t get the ok signal-which leads it to believe there’s potential for a gas leak to occur-and immediately shuts down. I actually had this exact problem last winter.

If there’s literally a “gurgling” noise on start up, i would assume water has pooled into the housing of the blower motor. In that case, the longer you leave it the more likely it will cause some serious damage, and those motors aren’t cheap.

Is it a stupid idea to use plaster of paris as a kind of potting compound? Like putting electronics inside a plaster casting? What does it might do to electronics?
1 reply omitted. Click here to view.
>>
The idea is to seal the whole thing with Nitrocellulose Lacquer when the casting has set. I also plan to laquer the board to keep it separated from the plaster as much as possible. I don't know might still be a futile attempt, any input would be appreciated.
>>
Plaster is brittle and bad. If you want electronics in your plaster cast penor pot them first.

If I need flexibility I use sensor-safe auto store RTV. If want hard, I use epoxy.
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>>1335695
Distilled water to be safe
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>>1335689
>isn't waterproof
>will prevent cooling of the electronics
there are varnishes and epoxies that work better as a waterpoof coating and then you can immerse it into mineral oil for cooling.
>>
>>1335689
>Is using a water based mineral filler on electronics retarded?
Yes this is retarded, asking it is even more retarded. Although it'a typical /diy/ question where people ask questions about things they're never be able to do anyway because of their lack of knowledge.

>>1335695
This is even more retarded, you seem to know nothing about plaster OR electronics. Why don't you search the 1000 reasons why some things are never being done instead of bothering a place with only retarded questions and assumptions?

>>1336609
>to be safe
eeeeehm how is plaster itself not a salt? You'll never learn it seems.

epoxy exists for a reason

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Hi /diy/

I need some help for a student competition for a health care device. We just need to build a prototype in the following categories, so does anyone have any ideas? You guys have always helped me in the past and know you have good ideas, so thanks in advice bros. I just wanna make it this one time in life...

" Teams must choose from one of the following tracks:
Early Detection and Monitoring of Catastrophic Events such as epileptic seizure, heart attack, or stroke. A way to detect and monitor patients before/during/after catastrophic events that reduces the impact of the event.

Elderly Patient Support Devices and Technology: Finding engineered solutions to age related health issues. (e.g. diminished mobility, tremors, loss of memory, other).

Choose Your Own: the sky is the limit! Select a health problem area or clinical need of your choosing and identify a solution that combines both hardware and software."
12 replies and 1 image omitted. Click here to view.
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>>1336504
Earily detection and Monitoring if catastrophic event.
The device is shaped like a banana. It has sensors on the end to detect the presence of fecal matter. The device is inserted into the anus and provides an early warning system in the event of a potential shart. The moisture of the potential shart is measured closely.
The device also measures air pressure.
The device pairs with a cell phone which uses GPS to monitor when the user is near a Walmart location.
If the pressure is high, feces is in anus, and the user is at Walmart, the cell phone alerts all nearby people of a potential shart in the mart.
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>>1336831
that's stupid. it should just be a filtration buttplug that keeps the shit in while providing a permeable gas exchange layer and carbon filter to gradually release non-smelly gas.
>>
>>1336855
That's dumb a fuck dude. If we fix people's problems they will stop paying. We need to keep them spending money on products.
>>
Make a can, but put l.e.ds and a horn on it. Also have it fold and unfold itself with a but to, push. Also install a Google home in it with some Bose speakers.

Category. Limited mobility.
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>>1336504
Protective gear that looks like everyday clothes for epileptic patients
Like a ball cap that functions as a helmet

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So... Please show me your perpetual motion machine.
Is there a way to use the earths magnetic field? Is too weak for magnets
8 replies and 1 image omitted. Click here to view.
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>>1336730
wrong the moon is moving away from the earth.
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>>1336585
Perpetual motion is impossible (for now) due to friction
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>>1336783
That anon seemed to be invoking the notion of withdrawing the Moon's orbital energy somehow, which would eventually lower the orbit past the Roche limit, where it would be torn apart and assimilated. But yes, making use of TIDAL energy transfers angular momentum from the Earth to the Moon which raises the Moon's orbit.
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>>1336585
I want Nikola Tesla to have sex with my wife.
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>>1336730
Okay what if we put a satellite in orbit. Then it would be moving against Earth's magnetic field. Is that free enegery?

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Hey, this is my first post on this board and basically I want to get better at handicraft.
Unfortunately I wasn't able to learn things like these in my childhood because my father was not able or willed to teach me anything regarding the matter. It would take a lot of time to get into that, so I am not going to, except requested.

Since there are a lot of people on this board that are skilled in handiwork, I would love some hints and leads where I could start improving in exactly that direction.

English isn't my first language, so sorry for any mistakes in writing or anything like that.
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>>1335500
>Since there are a lot of people on this board that are skilled in handiwork

There isnt, dont believe the lies. Bunch of retards on this board

Find things that need fixed
Use google and youtube to find out how to fix them
Gain experience by fixing things

Your skills will grow over time
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>>1335500
Pretty much what the other guy said...Find things to fix and then fix them. It's the best way to learn.

You might want to pick an area that interests you most, like woodwork, then branch out from there. A lot of skills are transferable and often somewhat related.

It's hard to be excellent at everything so you tend to either specialize in a certain area or you become a 'jack of all trades', which is what I think you want to be.

I'm a jack of all (many, not all) trades. It's fun, but be prepared for everybody you know to come to you when anything breaks!
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>>1335513
This 100% OP.

Just try not to get pissed off. If you are like me a 5 hour youtube repair will cost 3 times that and 3 tries.

You get better tho
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>>1335500
Like the others said, start small and develop a mindset of fixing instead of trashing. If you take something apart, make photos of relevant disassembly stages, trust me, this will come in handy. Also don't go overboard with tools. Buy cheap tools where quality isn't much of an issue, like spanners etc. Replace anything that does break by its expensive quality counterpart. This way, you'll automatically build a tool shed with funds allocated where they matter and you won't waste funds on expensive tools you never use. Make a habit of collecting screws, nuts and bolts in empty jars or any other container.

If people are puzzled as to why you're putting in effort to repair something instead of replacing it, you're on the right track. Eventually you'll become 'that guy that fixes things' and people will ask you to fix their shit. Easy way of building your skills and gaining favours in one go. Do start out with the 'hey this is broken, maybe you can fix it but trash it if you can't' and not with your uncle's new plasma TV. Seriously, a friend of my father's once asked me if I could fix his Jaguar car door when I was a 16 yo kid, I politely declined. Don't start things you can't finish unless they're worthless to begin with.
>>
Oh and Youtube is your best friend. If only I had that kind of knowledge resources when I started out fixing shit as a kid, I'd be McGyver now. Seriously they have specialised videos in how to repair specific parts of obscure turntables from the 60s, it's insane. There's always a madman who is more auti-, I mean dedicated than yourself.

File: Projector.jpg (2.47 MB, 5312x2988)
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Ripped out the cord on my projector screen
Does anyone know how I would rewire it

Thanks
2 replies omitted. Click here to view.
>>
It came with the switch
its a 3 way switch (up off down)
the side with the red wire goes to the screen
and the other wires go to a wall plug
>>
Its a cheap Chinese screen
I'll fix the wires when I resolder it
that black wire is stripped long enough to short
>>
You find out which input wire is which (L N gnd).
You take down the screen and look at the motor where the wires go.
Just to be sure you check how the switch works.
If you don't have a multimeter you would need at least a simple continuity tester:
https://www.youtube.com/watch?v=zse758zlHNQ
https://www.youtube.com/watch?v=TaqjUJmPKOE
Of course you need to measure without the mains power plugged in.
>>
It could be wired like on pic. If you find out which wires are earth (probably green) it should work then.
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>>1336750
Thank helped alot
I got it wired

Thanks!

File: iv11_vfd.jpg (306 KB, 800x400)
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Any anons here made some clocks? Like nixie, vfd or just plain LEDs, using arduino or ics or just plain transistors?
Show us what you got!
Anybody made a mains frequency clock?
63 replies and 20 images omitted. Click here to view.
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>>1335909
Now I need a supplier that doesn't charges me 20€ for 10€ worth of IC's. Some guy told me about some polish electronics supplier, but I have forgotten since.
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>>1335909
My math is wrong, 0.27 per shift register and 0.30 per transistor array. That is, 8 cents per output, or 5.37€ a 6 digit clock, including dot. The cheapest option I've found.
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>>1336180
consider discretes. MMBTA42 for a cent each in 100s + base resistor for $2/1000 (aliexpress prices, may vary by country)
the HC595 happens to be popular because it speaks a protocol that strongly resembles native SPI. there could be other shift regs in the HCMOS logic universe that might need a slightly different protocol. in particular a tiny, tiny bit of flicker as a bit works its way down the register line might not matter too much if you're quick about it, in which case the HC164 would be worth considering
>>
>>1336207
>consider discretes
I did, but it'll probably be a pain in the ass having to place and solder them all without a reflow oven.
>HC164
It's 10 cents more expensive than the 74HC595 on digikey.
>>
>>1335296
>>1335909
Lol, they saved money by making the 5 with a rotated 2.

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Got a few of these boxes from work because they were about to throw them out. What cool stuff can I do with them?
14 replies omitted. Click here to view.
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>>1335625
"finger" box. or a finger box.
>>
>>1335625
Make a sex box.
>>
>>1335625
isn't this basically just a small pallet for wine bottles?
>>
>>1335625
two words:

finger

box
>>
>>1335625
You could pack it with straw and store or ship wine bottles in it.

I have a 5000w 20a garage heater. #10 wiring to a 30a double pole breaker.

I want to add a on/off switch between the electric panel and heater to cut power to heater when not in use. Will a 30a double pole switch work?

Heater
https://www.homedepot.com/p/Cadet-The-Hot-One-5000-Watt-240-Volt-Electric-Garage-Portable-Heater-RCP502S/202909808?MERCH=REC-_-rv_mobileweb_rr-_-NA-_-202909808-_-N

Switch
https://www.homedepot.com/p/Leviton-30-Amp-Industrial-Grade-Heavy-Duty-Double-Pole-Toggle-Switch-Ivory-3032-2I/301447117?cm_mmc=Shopping%7cVF%7cG%7c0%7cG-VF-PLA%7c&gclid=EAIaIQobChMIgPzCkby42QIVhmB-Ch1ZXAI6EAQYASABEgLjifD_BwE&gclsrc=aw.ds&dclid=CP7ttJS8uNkCFcjHwAodfrUEgw
>>
yes

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Help, poorfag with a serious leak problem. The uppermost, ceramic-tiled floor which houses an open garden is leaking water to the floor below causing a lot of damage.

I don't really care about appearances, how do I stop the leak? I think the water simply seeps through the gaps between the tiles and somehow permeated through whatever the floor is made out of.

Can I solve this problem using liquid rubber? If possible I don't want to deal with dismantling the ceramics.
>>
>>1336125
>Can I solve this problem using liquid rubber?
You may try to alleviate the leek with liquid rubber. It wont fix it.

You'll have to remove tiling and redo all stuff there anyways, sooner or later. If you don't have enough $$$ to do that now try to do whatever you can while saving for proper fix.
>>
>The uppermost, ceramic-tiled floor which houses an open garden is leaking water to the floor below

Wut? Explain this.
>>
>>1336125
picture of the garden anon, the tree root is prabably destroying your roof
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>>1336125
Tar on the floor. A lot of it. Tiles don't do that job unless you use some special compound to cover them.
>>

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Guys, How much did I fuck it up? I have no idea how to fix it to make it look better.
18 replies and 3 images omitted. Click here to view.
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>>1336468
Even so, the hinges are on the wrong fucking side for a sidelight.
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>>1336523
Lol.. Damn nigga
>>
>>1336468
>Lipstick on a pig
>>
>>1336523
Don’t bitch at me.
It’s not my fault, you cunt.
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>>1333672
Make shelves for the side

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I'm going to attempt to build an array of e-ink panels for my office, inspired by https://www.youtube.com/watch?v=RM-8L8-RQvo
I found a reasonably good deal on bulk-ordering 9.7" displays (model: ED097OC4), and have the general plan down:
>Use a Raspberry Pi to handle the input
>Create SPI bridge to an array of FPGAs (I'm thinking one good FPGA per column/row of panels).
>The SPI bridge will allow me to directly connect to the Pi's composite video out, but if there's an easier/better way to do this, I'm all ears.
>The FPGAs connect to the panels to drive them.
Full specs on the panel can be found here: http://www.lcd-source.com/datasheet/E+Ink/ED097OC4.pdf , and pic related is the page detailing the pinout.

I know little about electrical engineering, but I'm going to try my hand at this so I can learn. As an added bonus, if I can pull it off, there's a local company who is willing to contract me to do it for them on a large scale throughout their offices.
I have a number of questions, most of which are pretty /newfag/:
What tools will I need to accomplish this task? I can think of a few off the top of my head, but some specifics would help:
>soldering iron (+ should I be using leadless solder or the normal kind?)
>voltage meter
>wire-stripping pliers
>those heat-shrink wire casings

Comment too long. Click here to view the full text.
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This is what the actual panel looks like
>>
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And this is the general layout I'd like to achieve in the end (from https://www.youtube.com/watch?v=pnb4tFK4I90)
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>>1336701
Essentially, the only difference between that project and mine, is I'd like to have one large display, not multiple duplicated displays.
>>
Okay, bit of an update. I've decied to go with
https://hackaday.io/project/21168-fpga-eink-controller
for the FPGA, though I'll need to modify it heavily to support the higher resolution and different pin configuration. This also takes care of the need for an SPI bridge, though I'll still need to figure out how to drive multiple displays as though they are one unit (most likely by further modifying the FPGA, perhaps create a way for the displays to connect in series, and just beef up the FPGA for larger display configurations).
I've also been digging around online, and I think I have a good toolset lined out on Amazon that should be here in a few days. The last bits to learn is how to create a PCB, how to connect everything together, etc.
>>
Okay, last post from me.
I've learned how to make PCBs, and now I'm beginning the project. Maybe I'll create a thread when I finish it.

File: image.jpg (151 KB, 1280x960)
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The lights in my trailer shorted out, any idea what kind of lights these are and where I might find more?
>>
searching trailer led bulb was so hard
https://www.ebay.com/sch/i.html?_nkw=T10+led+trailer
>>
>>1336286

we shouldnt spoonfeed the lazy. this contributes to more threads like this
>>
>>1336283
it's some sort of led bulb
>>
>>1336463
just direct people to the latest /QTDDTOT/

>>1334821
>>
>>1336286
Thanks I will probably stock up on some for my rv too.

How would you go about converting a van or old bus into a camper that is solar powered? A good idea for a project or no? I am having a hard time with solar panels because I know nothing about them, but it seems like the only viable way to keep a fridge running while I am innawoods independent of society. Any suggestions mc/diy/vers?
6 replies and 1 image omitted. Click here to view.
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>google is too hard
>>
>>1333651
>Solar is the only real option.

Honda eu2000 generators are quiet, can charge batteries, and have a very large user community. Beats running your van motor to charge battery banks if solar doesn't deliver enough wattage.
>>
>>1333651
Get a triple alternator setup and wire the van to kick on to charge the battery bank?
>>
>>1332521
>Most washing machine/dryer don't do well on 12v though.

>having a washing machine in a fucking van

you're gonna be doing laundry by hand m8

>>1333651
I looked into similar a few years back and it's cheaper to just get an apartment. insurance, maintenance on the van, a po box, etc, it adds up quickly and while an apartment seems more expensive all at once, it includes all the overhead and investments that a van would have had anyway, but you benefit from economy of scale by having city-provided running water and electricity. not to mention a lot more space, and the ability to ever have people over (people who might --gasp-- help you get a job)

>>1335693
>have an entire van with a big diesel engine in the front
>"you should buy a gas generator"
you domeass!!
>>
>>1329447
*smooches*



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