/diy/ - Do It Yourself

Basically something like this.

(I already know how to build a CRT oscilloscope, I did that with a wine bottle for a high school project. I just post this for general reference)

>>1310456
How did you get the phosphor coating on the bottom of the bottle?

>>1310461

I don't remember exactly but I had to mix some nasty shit that I was afraid would explode in my face. One of the reasons why I only did it once.

>>1310449
I've built some large LED Matrixes from individual LEDs; but it's a neightmare wiring up each individual one. These four low resolution monochrome ones took a few months. RGB 640x480 would be a nightmare. Using addressable LED tape or premade matrixes would have been much faster but cost thoasands.

>>1310560
>not having a pick-and-place robot in your home workshop

>>1310461
He's lying, phosphors for crt's don't contain phosphor and aren't flammable/explosive, and as zinc sulfide is the most likely option for most phosphors they're not even really toxic. Also nobody at home is able to make a working oscilloscope from a wine bottle without making the news.
>I don't remember exactly
>nasty shit
Nice confirmation, these are the things you don't forget if you're not a lying piece of shit.

>One of the reasons why I only did it once.
>Confrming lies.
Standard tricks, go see a doctor.

Also if he would have really wanted the information he's asking for, he'd have found it as everything to know about displays is widespread.

This fuck is an "shipping container bunker" tier attention whore, and he probably likes to make threads that lead nowhere. As obviously a lot of shitposters on /diy/ do.

>>1311233
>Also nobody at home is able to make a working oscilloscope from a wine bottle
http://www.sparkbangbuzz.com/crt/crt6.htm
Strictly speaking, you don't even need phosphor, as the glass itself does the job - very badly.
Of course these low vacuum magnetic deflection CRTs suck shit in every possible manner, but they work well enough that you say you have made a CRT and a scope using it.

>>1311233
>I actually know nothing, but if I blow hard enough it might seem like I do: The Post

>>1311244
I have seen those before OP could speak, and I'm sure OP did not make any of them. Also I hate faggots that say they made a scope when they actually made a xy screen without a timebase of trigger, but what do I know right? (and then there are those that make a "scope" with a timebase but without trigger as well, like those ugly laser-mirror-harddrive-"oscilloscopes")

Also that is still not a wine bottle, and as you can see the blue ionized gas indicates no proper vaccum, so calling this a proper crt is beyond me, it's crt-ish at best. (no good vacuum, no heated cathode, no focus etc... but I see you made half of this point yourself)

>>1311248
Nice contribution, too bad you're wrong, just like OP. There's a lot of bullcrap discrediting his story, and that stays true until OP or anyone else can prove otherwise. If OP really has made a crt once, he would not ask such a mundane question as he'd know about everything that's there to know about displays already. Or at least he'd know how to find the right information, as there's a fucking lot of it.

>>1311263

>If OP really has made a crt once, he would not ask such a mundane question as he'd know about everything that's there to know about displays already.

My question wasn't really mundane, I wanted to see if anyone else had done it so I could see what information out there on the subject was before I attempted to do it myself.

And about my DIY CRT: that was a highschool project I did with my class, I was responsible for operating the vacuum and actually creating the screen with the person in charge of the coils. I don't remember what I charged it with because it was a while ago and I've done other things since. At any rate I don't believe that to be particularly relevant because my question is in regards to other types of screens that use different technology.

>>1311370
unless you want to take the low-res lite-brite approach anon used, you will probably have to do some kind of photo-etching. and several layers of it, and some way to bond all the connections. it'll be expensive and look like shit.

>>1311370
As you're insisting, I condemn you for not finding this yourself.

https://youtu.be/d4QFNWBSZYg
https://youtu.be/_zoeeR3geTA

You may get a gist of what it takes to build a proper display. Then you can find out you just want to buy a display and see what crazy things you can put on them.