how to turn a TV into an oscilloscope

[clanat01]

you touch that cathode tube when its charged and your going to go through the wall mate ;)

[hallsf]

Great job, McLovin!

[deepcut66]

Hey thanks very much for showing this, veeeeerrry cool :)

Do you know about the software oscilloscope through the soundcard, that is handy for low-voltage stuff.

[crazycrackerent]

can you do that with a old computer monitor

[MultiXavier98]

in english?

[MozTS]

autism is a hell of a thing

[hercegovac00]

I have this on my PlayStation 1 no need to turn TV into it...

[wilfeatscheese]

this is technically called a "vectorscope" if its measuring stereo which i think it is

[Gumpa2]

ehy cant u get it bigger?

[ultimatebman]

That is absolutely awesome

[kenlmoe]

This is stupid, what a waste of fucking time watching this!

[findharsha]

BTW, Do you know what is meant by OSCILLOSCOPE??

[myz24ownzu]

mclovin?

[23brandonsch]

could this work with a color tv

[munchluxe63]

Ah, reminds me of the PS1.

[buddhaman001]

need to pay attention to the geiger meter or you gonna die m8

[tbfateless]

if you hard wire an old amp from some speakers or guitar amp it will make the visualization larger.

[LiGhTwOlF1308]

Im hearing nickelback really soft sounds like it comes from the radio or Mp3 or something but WMG actually copyrighted that and turned a ad on the video OMG

[AmigaAnimeDanDude]

fyi...that picture tube has up to 25,000 Volts pumped into it to show a beam. This is dangerous voltage that can hurt or kill you! Be -very- careful when playing with this! Otherwise, nice hack.

A word about X-ray radiation: 1970s and before TVs had a dangerous level of X-ray radiation when used for a long time. A warning was sent out to tell consumers not to sit close to those TVs. Any TV in the 1980s and after have built-in protection to reduce, if not eliminate, X-ray radiation.

[SaraWinterweb]

@AmigaAnimeDanDude Great info on the radiation, thanks! Remember, it's not the Voltage that will kill you, it's the Amps. Thanks again :)

[KRAFTWERK2K6]

omg.. watch out for x-ray radiation when the TV backside is opened and the Tube is turned on!! It's really dangerous!!

Other than that, great idea!! I have an old compact B&W TV monitor i could use for that.

[TheEightBitLink]

@KRAFTWERK2K6

The backside is leaded to prevent stuff like that from happening.

[TheEightBitLink]

@KRAFTWERK2K6

The backside of the tube is leaded to prevent x-rays from passing through. Otherwise, we'd all have cancer from out Television sets because plastic does nothing to stop x-rays.

[phikre]

Almost a textronic!

[buddhafollower]

1:48 that way you can burn up the luminophore

[tweetyaja]

You need an old TVs to do this task, Probaly dont work on the widescreen TVs

[321pocoyo]

this is not an oscilloscope, this is a shit

no time/div, no sync,  no position controls...

[cobrachoppergirl]

Connect the original Vsync line from the TV board that use to go to Vsync coil, to the Hsync coil (instead of one of your stereo channels). Then leave the other as you have it, the Vsync coil connected to your CD. You'll get a H/Sweep line then, and can then see the audio signal like sine waves. Or if you're doing a fresh tv, just cut the Hsync line and connect the wire from its coil to your CD player, and you'll be done, only your image will be 90% rotated.

[surferboy36O]

@cobrachoppergirl I read a guy tried to do that and it started to produce smoke, why? I don't know. I wanted to try that, but don't wanna fry my TV.

[SaraWinterweb]

@surferboy36O Sounds like the device was rigged incorrectly(oxymoron?), possibly causing a surge of electrical current, which would likely begin melting and frying the components. CRT TV's (like any electrical devices) have intricate circuits consisting of many fuses, resistors, electrolytics, capacitors and the like, whose charges can easily damage the TV when their "normal" flow is interrupted, changed or damaged.

[twitchd8]

well... I saw a few lissajous patterns in there... :P lolz... right at the beginning... nice project... :P

[radishfest]

this guy hasn't been on youtube in a year. i hope he modded his wall socket w/ a fork and died ˴ 〰 ˴

[radishfest]

i too would rather risk death than buy a basic tool that i will use for the rest of my career/life. nickelback owns.

[Thetruthishere11]

Where's the how to build it video?

misleading.

[MrNikname]

WOWOWOWOW!!

WAIT A SEC! 1:10

how safe is this? a 9 year old kid is wireing a TV?

[simontay1984]

I agree, I can't f****** watch it now cos the of greedy bastards at WMG!

I suspect who ever made this video was also talking over the top of what ever audio he/she had playing. Gonna find another TV 'scope vid

[austob]

Fuck you WMG fuck you

[bob505470]

ya only about 9,000 volts your messing with. lo amps so it wont kill you but its guna feel like you gottazed

[thuzjak3]

u should use some kind of amplifier to amp up the deflector coils and get a bigger picture!

[metemi]

Fucking WMG, fuck you.

[caesiume]

@metemi They've made the video entirely useless. Greedy pigs. Profit over science....

[Jenfucius]

I wonder if you can make a "Tonoscope" from this???

[DerCheckah]

how many ppl have died trying to setting this up.. :)

high voltage is very dangerous

[tzkelley]

@DerCheckah Just a few that needed to be removed from the gene pool anyway! :)

[X2YeZCAMCNC]

that is called a thin lizzy

[desinfector]

No, disconnect the horizontal yoke and leave tzhe vertical deflection as normal.

Turn the complete set of deflection coils 90 degrees. This will be best.

But connecting both coils to the speakers is a good one too, creating lissajous-figures then.

[jedw]

You should have left the horizontal as is, and connected the cd player to the vertical, giving a trace the full width of the screen using the tv's horizontal sweep, of .. erm some Khz .. i don't know the figures but you know. :)

[DreHectik]

Cool stuff, but there must exist a way to exergerate that visual so that it takes up a bit more of the screen to give a better performance :) Like an amplifier between the cd player and the yoke tranformer...or somewhere...

[tectalabyss]

Ypu can turn the yoke transformer to get the waveform upright,just make sure you stay away from the high voltage going into the back of the tube.even after its unpluged there is still a lot of voltage left in the tube it can stay there for days like a big cap. Thanks for sharing ..Tec

[craiggerman]

that was very cool, but you listen to crappy music, sorry to break it to ya

[BitzFit]

Hey thats pretty awesome. I would get shocked probably... =/ i got zapped by a distributor on my car. I like nickelbacks "how you remind me"

[inachu]

the ching chao will be modulated? huh?

[Darshenstein1]

when you make it vertical arounddd 3:40 why not just reattach the vertical coil to the tv?

[xXtortionXx]

how do you spell ossolator..im trying to find something like this to play low Hz for some speakers i have..can it do that please respond

[drewh0208]

'oscillator'; just look for that on eBay or ask somebody at an electronics store about one

[xXtortionXx]

can an 'oscillator' play down to 5hz

[drewh0208]

Sure; the one I have goes down to 0.1 Hz. Theoretically, an oscillator could be built for any frequency range.

[rockman378]

@drewh0208 please respond to me...my question is how do you get a picture like that mine is a diagnol picture with very little other response... Please help me... if you want i'll take pictures of it my video camera is broke

[Darshenstein1]

theres an open source(free) program called audacity it can generate any frequency you put in with your computers sound card its mainly for recording audio but it can do alot of things also theres a bunch of software from this NCH thing there all trials but there easly tricked by putting your time to up to 10 years up and installing they have a test tone generator where you can put in a bunch of frequencys change and change it around faster

[illcutyourface]

nickel back???...  jesus christ! could have picked a better song..

[00011theman]

@illcutyourface nickelback rocks

[b00unty]

dude just put a ramp wave (saw tooth wave) across the horizontal wires, paint a grid across the screen, put whatever signal you want to see through the vertical wires & you've got the worlds cheapest oscope.

[jeabo0adhd]

hook up the coils to a cheap stereo and put resisters in the circuits to match 8 ohms and you will get a "fullcreen" picture

[CrashByron]

How did you get the dot on the screen to begin with?

[drewh0208]

It was weird for this TV; after separating the coils from the circuits, I had to connect a 3V power supply (two 'C' sized batteries in series) to the coils in a sporadic manner. I guess there's initially a surge or something through the coils to help the electron gun start. Just try different things out.

[westernmind]

sony sold a devive about 16 years ago to turn your television into a light show that pulsed to your music. if any one knows what they were called please post

[antienjigglement]

Atari, in the ancient 70's made a device called the "video music". I am also ancient.

[Suckerbrot]

is that a fuji finepix s3500? :D

I have that too :D

[my83merc]

I'd like to see you use an output device with higher wattage so you can get a larger pattern on the screen... you can't need more than... 15 watts? that cd player is probably maxing out between .5 and 1 watt...

[drewh0208]

Ya, I know that the CD player has a weak output, but I think the patterns were ok considering this used the minimum level of wiring.

I did use a step-down transformer to improve the output, but I didn't make a video of that, and I salvaged the flyback transformer out of it (which works a ton better than my other one; my next video might use that one).

[CKC90]

a little more detail would be nice, and your music sucks.dont say anything to the last part, because no matter what music you choose, some idiot will always say it sucks.

[drewh0208]

Just let me know what other details you think should be included, and I'll post it in the video details or make another video.

I chose this specific song because it made interesting patterns (and had enough bass in it to significantly deflect the e-beam), and you don't have to say that you dislike the song. ;-D