I made a fake CRT TV with a LASER

[@bitluni]

Check out brilliant.org/bitluni/ for a 30 day free trial or a 20% discount for an annual subscription (sponsor)

[@Randomman149]

ONE DAY AGO? It was uploaded 31 mins ago bro

[@Nobe_Oddy]

YES, TWISTING WIRES IS GOOD. when you twist 2 wires together (2 wires of the same circuit... so 1 wires is the positive and the other wire is the negative) they 'magically' shield themselves from outside interference... this is why you see 4 twisted pairs of wires in an ethernet cable.... but you CANNOT have more than 1 circuit in a twisted pair... this will interfere with it self and can ruin both signals... - I JUST explained this SAME THING to another channel about 2 days ago :D - So going to school for Network Administration LEARNED ME SUMTHIN!!!! 🤪😁😳😂

[@francoisleveille409]

May I suggest for our common safety that you forgo the gravitational field project ? A small black hole on earth sweet jeezz!!

[@cheeto4493]

@@Randomman149 uh, released to members early?

[@cheeto4493]

@@Nobe_Oddy You can only have one circuit in twisted pair, cause you only have 2 wires. Otherwise it would be a twisted group, which is not a thing.

[@EddieHart]

I suggest you buy yourself a cheap laser barcode scanner and see how that creates a linear beam from a single laser diode. It typically uses a mirror fixed onto some compliant material/thin plastic hinge (something thin that can bend) so it can wobble along an axis side to side while remaining balanced. The mirror has some kind of light magnet on the back and a voice coil behind it is used to attract/repel the mirror at a specific frequency, causing it to wobble along the hinged axis. Because the mirror is balanced on that axis, you don't need to move the full weight of the mirror meaning you can do it faster than with a motor or the speaker method you used, where you have to move the entire weight of the mirror which is much slower because the system has a higher inertia.

[@jhonbus]

That would make it a raster display instead of a vector display though!

[@MadScientist267]

One thing.. vector displays don't use line by line scanning.

[@EddieHart]

@@jhonbus It would if you oscillated the mirror at a set frequency (the same way the barcode scanner does) and used scanlines. But I meant more that this approach could be investigated to see if it's feasible to move the mirror to an arbitrary angle using the same technique. I don't know how much the oscillating of those mirrors is sustained by simple harmonic motion as opposed to actively being moved by the voice coil - I suspect it's probably more the former, but still worth a try.

[@cheeto4493]

@@MadScientist267 if you varied the voltage, you could vary the deflection. Similar to his first attempt with the speakers as drivers. I don't think Eddie was suggesting a line like in a raster scanner, but the hardware style used to deflect the beam.

[@SmallSpoonBrigade]

@@EddieHart TBH, probably the easiest thing to do is just rotate the laser and block it when it's not oriented towards a part of the visible screen. That way, you don't have to stop the mirror and switch directions. Which just means that you have to raise and lower the assembly as you go through the screen. If you go from top to bottom and then bottom to top, it wouldn't be as authentic, but as long as you mirror every other frame, it probably wouldn't be visible to the viewer.

[@redderthanmisty6762]

"Then you have vim... which can only be exited by turning the system off and on again" 🤣

[@гксгк]

:wq!

[@DasIllu]

Yep, that's VIM. Can't remember all the shortcuts, sacrifices have to be made 🤪

[@SnakebitSTI]

Esc, :q!

[@Riichrd]

Killed me! 😅🤣

[@thatcatthatalwayseatsyourchees]

@@DasIllu :q

[@RichardBetel]

I wanna suggest a rastering mechanism: You get an octagonal thingie with mirrors on each of the 8 faces, and spin it at 225rpm, then shine a laser on it. You'll get a straight line with crisp start and ends, re-painted 30 times a second. That's your vertical sweep. If you build a second spinning octagonal mirror spinning at 1800 rpm and arrange them so that they spin on axis 90 degrees apart, you should be able to get a NTSC image. Now you just have to switch the laser diode on and off fast enough to get a picture! You can manage 350kHz on the diode control, right?

[@mal2ksc]

Wait, aren't you just stealing the guts from a laser printer at that point?

[@Meower68]

@@mal2ksc That's *EXACTLY* what you're doing.

[@threeMetreJim]

The image might be quite dim though, as you have to spread the power of the laser out over the whole screen. I did try it with leds once, for a projected 8 line moving message display and noticed that enough power to spread out to get the brightness was a problem, this was one led per line too. A vector display can sort of 'cheat' that problem.

[@eat_things]

2:12 A sudden electroboom appears...

[@xavicariteu]

@ElectroBOOM, take a look!

[@powertomato]

Beat me to it It was my thought as well

[@jonny11bonk]

Der Elektroboom

[@robertk1701]

double checked the channel name when that happened

[@devWeidz]

"And we have Vim, the only way to leave that is by turning off and on again" 😂

[@silber7010]

For the horizontal line you can also maybe use for example a hexagonal shaped mirror, then that stepper can rotate at a constant speed to draw multiple horizontal lines. But that works only for TV mode, not oscilloscope!

[@atari7001]

It was think the same. Seems like it would be easier to just modulate the laser.

[@virtuallyaverage9357]

Id wonder how quickly the Lazer can be switched on and off, I'm sure there's a couple ms delay, which would really limit the max speed

[@SmokeyWire56]

I'm basically trying do this. I used a square but the beam was too wide. Im going to try a pentagon, then motor will only have to spin 15,600 ÷ 8 about 2000 rpms. And the other motor is just a brushed motor that shimys back and forth at 60 or 30hz. No fancy computer stuff needed. And the cathode current controls the lazer brightness.

[@mikeselectricstuff]

Your first mirror could be a lot smaller - less mass & air resistance

[@bitluni]

not only that: first mirror should rather do the horizontal deflection and the second one the vertical. but don't tell the others 😂

[@AdiGitalEU]

@@bitluni I would also suggest using old hard drive aluminium plate cuts as the mirror. The surface is the reflective layer and should provide better focusing.

[@lorenzo.c]

@@bitluni I wonder if you thought of and then discarded using the voice-coil motor of a mechanical HDD. Those motors, which position the arm carrying the heads at the right spot on the platters, have a coil between permanent magnets, a bit like your speakers at the beginning. It's easy to find examples of people placing a mirror on the axis of the arm, pointing a laser at the mirror and then driving the motor with an audio amplifier playing music. In your case you would have to code a more sophisticated control algorithm. I remember finding the video of someone doing precisely this with an Arduino but I could not find the code. Extraordinarily cool project, by the way 😄

[@mal2ksc]

@@AdiGitalEU Any front-silvered mirror will do for the job, and hard drive platters are kinda hard to cut to size and shape although they're great if you can use them as is.

[@richardzeitz54]

You should try brushless DC motors! They can go VERY fast and stop on a point. They don't need anything like much torque. Maybe not as simple a steppers but they're used by some corporations for very precise work nonetheless. Your initial idea, using speakers, was the best. I'd love to see it scan fast enough to serve as the display for a videogame like Asteroids or a Vectrex title.

[@clockworkspiral]

faster dc motors could probably lend themselves to a more continous-scan type design too, depending on how fast they can drive them. some sort of linkage that directs the horizontal deflection to a set rate, and the vertical deflection at a set rate with some way of resetting it. i wonder how fast the luminance of a laser diode like that can be modulated or switched, would be cool to see some sort of continuous scan rendering by adjusting the brightness of the diode itself like that.

[@mal2ksc]

How about voice coil head stepper assemblies from dead hard drives? Those can move really fast, for obvious reasons. I bet they could move even faster with much of the weight removed (all but one arm snapped off). Also speed is helped by keeping the mirrors as small as possible, so there isn't so much inertia to fight. The first mirror in particular doesn't need to be as big because it is receiving a stationary input.

[@Stabby666]

This reminds me of the Tektronix 4050 "storage tube" vector displays. The CRT itself would retain an image, so no display memory was required. It had some obvious limitations - the display had to be "undrawn" to create animation, but it looked really cool and could create beautiful images with relatively simple hardware driving it. I think there was a later version that had 2 colours - one was the static image color, which was retained automatically, and another colour was only temporary, allowing animation over a static background without the CPU needing to worry about handling the background redrawing. There are videos of it on YT - very cool!

[@georgkrahl56]

The Tektronix 4010 (and so on) have been storage tube computer terminals. xterm has still a tek 4010-mode, changing fcolor to green gives back the feeling :-). Mabe one can find still some programs.

[@Jamman88888]

I really loved this project and cant wait for version 2. Would love to see some vector games running on it, battlezone would be incredible.

[@sickness80]

this! :)

[@didierdubos]

next : convert to a Vectrex video game console

[@Eliasdbr]

Yes please, no matter how low the speed could be

[@peter.stimpel]

I am glad you do not need to sing for making your income ... ❤

[@KRtekTM]

The performance in 13:29 is awesome! (whole project is amazing, thanks for sharing it :))

[@steffenjendrusch3734]

Reminds me of our laserscanners we did 20 years ago with the popelscan software. The solution we found was not to use steppers with snmall steps but steppers with really big steps of appr. 7°. so really corse stepping. Then you hold the rotor with a voltage between 2 steps and then modulate this voltage for scanning. So you get a few degrees of scanning and that doubled as a scan angle. No steps, no jagged lines. But as you already mentioned, there are cheap galvos available now.

[@Lampe2020]

1:12 "draw permanent lines on your retina" is certainly a way of putting that XD

[@saitamatechno]

that's a great project! A screen without a glass, amazing!

[@mr.coolio4321]

I am convinced that you are the most creative man on KZbin.

[@Simon_Rafferty]

Try replacing the Stepper Motors with regular DC Motors. They behave fairly similarly to a speaker coil, except with more displacement.

[@perz1val]

Did you notice that the red laser actually works as an eraser? Paint with blue/violet (405nm), erase with red

[@mal2ksc]

Maybe it would be possible to use a red or infrared LED to flash the entire inside of the screen when you WANT the persistence to stop.

[@teamllr3137]

Thanks for the knowledge about the uv sensitivity of bambu glow pla

[@RinoaL]

1:30 I like the gremlin expression lol

[@Kruglord]

As others have mentioned, a spinning triangular prism with front-surface mirrors on each face is probably the best way to create your horizontal scan lines. That's what's typically used in aerial lidar scanners, and it's very reliable. You could increase the number of faces to reduce the RPMs but increase the scan rate, but doing so also decreases the angle they sweep, so would require a longer base-line for the same size of CRT screen.

[@derre98]

I always thought it would be really nice to make a VGA-compatible RGB-laser based CRT-equivalent, but never could figure out a way to scan the beam fast enough.

[@msrblonline]

100% feature complete vi. nice job!

[@SarahKchannel]

Uhhhhhh love it ! It has to become the head-unit for a chatGPT bot :)

[@JamesTitcombOSwarthoull]

replacing the speakers with the head arm and coil out of a hard drive might be an option? you will get plenty of movement and a good high speed, but there is no feedback and no auto return.

[@threeMetreJim]

Might be nice if you can program 'Asteroids' for it. That old 1979 arcade machine used a vector display, and that had a unique look.

[@EngineerNotFound]

'Rick' called, he wants his royalties money.

[@elmariachi5133]

Making the mirros and the paddles they are glued on smaller and thinner shoudl help in allowing muchmore precise movement at higher speed, because of a the momentum reduction.

[@SamanBahrampoor]

This was such an awesome project! Took me back to the days I used to fiddle with AVR chips (before Arduino). I absolutely loved this :)

[@ibmicroapple9142]

Amazing, really cool project!

[@mal2ksc]

I think I can help a tiny bit with the speed. The laser is not using much of the first mirror, and most of it could be removed to cut down on mass. You're probably only using a region a few millimeters tall and maybe 1 cm wide. It's only the second mirror that has to deal with a beam that is already being swept. Also, if you were to sweep lines in alternate directions like a printer, you would eliminate the "flyback" motion that probably keeps you awake at night, making it a lot easier to do raster scanning. ILDA supports bidirectional scanning for exactly this reason.

[@InfamousSabreMods]

The speaker method was the correct one, just with the wrong implementation. Speakers are simple solenoids. Find some solenoids and use those instead. You'll attach one edge of the mirror to a solenoid and the other to a hinge attached to a fixed point. Do that once for X and once for Y. That will be much faster and more precise than your current method.

[@mal2ksc]

Or if you want to raster scan, one of the two mirrors could be multi-faceted and in constant rotation like a laser printer. Then there's only _one_ solenoid to worry about and it can carry a pretty tiny mirror since the input beam is not yet moving.

[@erlendse]

First that comes to mind is HDD parts aka the head movement part. Second thing that comes to mind is laser galvos or using needle meter movements. You got the right idea.

[@rayraysss]

"The only way to quit vim is to turn off and on" that seems accurate

[@BESTvsWORST-vx2dg]

placing a sponsor right after showing how you used chat GPT is like winking while the sponsor read

[@computersales]

I love how the internals started out well laid out then became more chaotic as you added features. 😁😁

[@CortVermin]

at this rate this dude is comming up with a diy holodeck before its even invented

[@miege90]

amazing! In case you want to do a second revision, try having the mirrors angled by 45 degrees, so the both contribute equally to the on screen x-axis and y-axis respectively. This should distribute the work the have to do and maybe improve the speed and quality

[@malvoliosf]

You might want to make a raster display, so the two mirrors spin continuously, and cover the screen left-to-right, then top to bottom, and turn the laser off and on when it’s pointed in the right direction. You would probably want double-sided mirrors, so you get a longer duty-cycle.

[@jebstalp]

Make it a projector. An application would be to transfer art or drawings onto paper, wood or other media. Like when painting on a canvas you can project the lines first

[@SmallSpoonBrigade]

A laser projector being used for back projection would probably be the easiest way of doing it. But, I don't think the point of this is to make an easy one.

[@alyssonrowan6835]

I can recommend a dedicated galvo mechanism - they are precise, smooth and fast. I have some that were designed for a fixed barcode mechanism, but the ones from more modern handheld barcode are even better.

[@hjvlthiny]

Most of the time, the mirror assembly in laser printers are just a spinning drum with multiple mirrors on the outside. That way, you do not have to worry about turning the mirror back after each pass. (At the end of each mirror, the next one is already aligned correctly.)

[@greenaum]

Quick idea about moving lasers... First, use leverage, so that just a little movement of the speaker membrane produces a greater deflection. There might also be a way to use lenses to increase the deflection. The key is to remember that almost no power is needed to push the mirrors, they're almost weightless. It's like low "torque", high speed. Second, maybe a pile of piezo elements? They ought to be able to move faster than an electromagnetic speaker. Wire them all up in parallel, electrically, but insulate them from each other. Then just stack 'em up. Arbitrary movement length from little power. Again they use almost no current so driving a pile in parallel should be no problem. Third, maybe try wire your own coil and make your own design for a galvo?

[@projectartichoke]

I'm thinking something like the voice coil from a hard drive and a neodynium magnet/mirror assembly on a pivot would provide much faster response times. A voice coil could both accelerate and brake the mirror. But, what you've managed to achieve with stepper motors is quite amazing.

[@Snoopey0]

Damn two bangers in a row. I think this will be my christmas holiday project!

[@WJCTechyman]

To have a faster redraw rate, I would maybe suggest using a multi-faceted rotating mirror like that seen in laser printers. Maybe getting more violet lasers so you can draw multiple lines at once getting better image response. I am looking at the technology Nintendo used in the Virtual Boy when I say an array of lasers. Those lasers are actually more of a line, but you get the idea. This would be good for a raster pattern like how modern video is made today. Edit: I forgot to say that the diodes in the Virtual Boy are LEDs, not laser diodes, but in your case that's what you may get.

[@KimGameDev]

On the horizontal axis you should use a DC motor with a hexagon-nut spinning. If the sides on the nut is like mirror then you can spin it really fast. This was done in old laser photocopiers, not sure if todays models are using this method.

[@LA6NPA]

I like this a lot! Well done! A similar project would be to make the beam scan lines and making a pixel array, like maybe 80x60 px? Or will the resolution be too low for that? because of the bleed in the screen? Maybe you'd have to make a black grid and make individual pixels with the luminous filament, so the pixels would be compartmentalised? The scanning would require a single stepper motor and gears and a mechanical counting thing (I don't know what to call this) making the vertical progress to the next line at the end of the horizontal scan. Horizontal scanner could be two or more mirrors intermittently turning at the end of the horizontal line, mechanically coupled , vertical scanner could be the same. You know, like those mechanical hand counters or a mechanical odometer in a car. Computer needs feedback too, to know when to start a line. Each pixel needs to be lit up exactly, though, so all this needs to be timed properly. I'm sure the frame rate would be low, but I'd still love to see it! It will of course be limited by the max speed of the mechanical device and how fast the mirrors can spin before self destructing! Or maybe you could have a spinning prism instead of mirrors? A tiny one, close to the laser? As you can see, this was a really inspiring vid! Thank you!

[@tutacat]

Each letter can be drawn with a single line, but turning light on and off is also useful.

[@gamerpaddy]

speakers could work very well if you find a way to detect its cone position and feed it back into the amp like a negative feedback opamp. proper galvanometers for laser scanners work exactly like this. they are just rotational speakers with a position encoder and a amp with some filters to set the gain for gain, damping etc.

[@sperzieb00n]

a beefier amp with lower resistance should already do that trick by shorting more back EMF, but then speakers still aren't great at rotating things in a linear fasion.

[@Drenov]

Try and display a B+W image, then try driving the laser at different levels to give a few grey levels, then sequence of images to give a TV. You could try multifaced disks to do the scanning rather than stepper motors to do the scanning like a mechanical TV, then sync the laser output to the position of the disks.

[@MrSlipstreem]

If you want actual scan lines, you could try mounting three small mirrors in a triangle and just spinning them with a laser bouncing off them. That works inside my head anyway.

[@dogoonubs997]

I like how he calls this a “fake” CRT, even thought it’s actually kinda close. While the method used to generate the light is different, as is the way the light is manipulated to points on the screen, the concept of the pattern of display is almost identical. Like others said, if he added a rastor mechanism it would be almost perfect.

[@jimmatheson9125]

If you use a wheel with several mirrors on it for the x axis you can still use it like that, or you can spin it for "instant" beam return in scope mode.

[@cutterhead13]

Ha using the glow in the dark filament like that is brilliant ! Love it

[@hugodesrosiers-plaisance3156]

2:10 ElectroBOOM would approve of this sudden fire. 👌

[@msx80]

So amazing, really feels like an old tv. You're the best

[@kevy1yt]

I almost lost my lunch, laughing so hard when you had your little benchtop fire. You came close to burning down your neighborhood!

[@seabeepirate]

This was pretty cool! Just a thought, could you drive the laser diode on a pwm signal to counteract the slow decay with higher refresh rates? If the laser is responsive enough you could sharpen your pixel width and possibly interlace the pixels for a quicker response to change on the phosphorescent screen since it has a long decay period.

[@BolverBlitz]

Love how you're shifting (back) to historical and educational content-such a refreshing change from the complex PCB stuff.

[@DiThi]

I don't know how real galvos work but any actuator that has a position proportional to voltage (like a voice coil) should give much better results in resolution. A crazy idea: have space for TWO lasers with two pairs of galvos. Alternate lasers to be able to jump positions faster. With a big enough queue of commands you can read ahead enough to position the other laser on the desired position. There can even be a simultaneous mode where it doesn't wait for the other laser to finish and it would be faster.

[@stephenkeen6044]

You want a pair of simple single coil galvanometers to do the deflection (like you find in old analogue multimeters). Just a simple coil with a magnet mounted on a pivot and spring. Can drive them from simple transistor amps on analogue X and Y signals, or directly with PWM. Can have very smooth movement, although you'll have to take momentum into account if you want high precision. Or if you want a CRT style scanning, can use a pair of rotating multiface mirrors, one at slow speed for Y, one faster for X. The speed is critical on these ones, though, to keep signal synchronised. Very frustrating when youtubers just go at it without doing any research on what other people have done in the past to already solve these problems (and can be found with minimal effort). Reinventing the wheel for "content" is just...

[@joeszymanski3540]

Using glid filament for the screen was a pretty cool idea.

[@Alkimi]

I'm not quite halfway thru and I haven't read the comments yet, but you could just use a magnifying glass to amplify the travel distance of the laser and then use the little speaker drivers instead of stepper motors

[@reanimationxp]

could you find a DLP mirror unit and use that? I assume they're fast as hell and you could probably treat the whole thing as one giant pixel to make calibration easier

[@AnnaVannieuwenhuyse]

You could treat it as one giant pixel, but that unfortunately does not mean it'll behave like one.

[@DrInfiniteExplorer]

Can you add more mirrors to the axes, so that x-movement might be either split into a "wide" movement and a "fine" movement, or to let then both work at half the original range? It might let you do faster speeds if any single mirror doesn't need to wobble as intensely

[@foogod4237]

Personally, I would have tried using something similar to the sort of voice-coil actuator used in magnetic hard drives for head positioning (you might even be able to just pull some from some old hard drives). Those can move _very_ quickly over a fairly large angle, and also very precisely too (if the electronics driving them are good enough)...

[@AnnaVannieuwenhuyse]

Twisting your wires on the BNC inputs may actually be detrimental, because you increase the length of the wire and the surface area of coupling. That increases your probe impedance and probe capacitance!

[@uggnot]

With manual control of the laser position you may be able to replicate the way that old vector monitors worked on arcade games like asteroids or battlezone.

[@DerekWilsonProgrammer]

Polygon mirrors on aliexpress for about $20 would get you the left to right scanning without turning off the beam, as it would reset when the other mirror comes into rotation. Think of it like a bunch of mirrors on the edges of a stop sign. They look like they are used in some laser printers. Probably if you can find a second hand or "for parts" laser printer you could salvage the polygon mirror. You also don't need to reverse it, just keep it spinning at a constant rate. To calculate the spin rate, you'd need to know the vertical resolution, multiply that by the fps, and divide by the number of sides of the polygon.

[@gillesguess6181]

You need to duplicate what the CRT did. have a continuous rotation motor to scan the lines, and turn the laser on/off where you want it. you could use gears to do the vertical scan.

[@anon_y_mousse]

Neat. Now you just need some green UV sensitive filament to complete the aesthetic.

[@youkofoxy]

Maybe you can make it quicker by feeding the laser to a first mirror set that feeds into a second mirror set. If you what to make it quicker, add a second Laser and switch between the two.

[@rocketman221projects]

I would like to see a raster version. Using some multi sided rotating mirrors like a laser printer uses, it should be possible to scan fast enough to display video.

[@Nobe_Oddy]

NEXT You should house it INSIDE A SPHERE!!! (made of that UV/Glow material) And maybe have MULTIPLE (5) LASERS to have coverage on 4 sides and the top

[@tutacat]

Using the diagonal axes as opposed to X-Y, would give straighter lines, since you would be moving both mirrors at the same time.

[@IsaacMcMillan-u7i]

You could probably use a lens to move the laser around easier. Have the laser be still, and move the lens up down left right to control the beam

[@henryisnotafraid]

This is such a cool project!

[@janmarucha9138]

That's amazing. By the way, wouldn't you be able to push to faster frequencies by shedding some extra mass from unused parts of mirrors? Afais the first one may be small circle, and the other a thin rectangle, and smaller moment of inertia may help

[@elejtrox8501]

I don't know why, but when I saw the thumbnail, I thought you were going to do laser beamforming, and I was a bit worried that you'd been in the lab for way, way too long. 😂

[@sachahobert]

I think the speakers could still work because they're so fast. You just have to create some leverage mechanism to create more travel instead of attaching the mirrors directly

[@tlv1117]

I definitely like that you mentioned wearing eye protection. How about after the device is complete and all closed up? Is it pretty safe to go without the glasses then? Or is there another color or strength laser that would work but negate the need for protection? I don't think I would want to have such an innocuous looking device around that could harm someone who turns it on without glasses.

[@sanderbuschify]

3:19 Randy from south park taking a shit. Hahaha

[@George-z4x4s]

Use rotating prisms to reproduce high speed scanning as used in laser scanners in stores these will make pictures possible like real crt displays

[@stoojinator]

2:13 - ElectroBOOM called and wants his video back!

[@cheeto4493]

I was thinking of something like this, but using the read head off of old spinning hard drives for the galvanometer.

[@i_trymy3est]

Twisting the cables actually does something, it minimizes the electromagnetic radiation but its probably not necessary for your project.

[@chazbennett7771]

Please continue with using speakers to move the mirrors, I really think that could do a wonderful job!

[@kezyka6775]

Could possibly replace one of the galvos with a rapidly spinning mirror disc (I think some use hexagonal discs or similarly shaped). If you could properly synch two motors then you could even do two spinning mirror discs (perhaps a solution would be to have one motor and a linked drivetrain?)

[@u0000-u2x]

Great project and hilarious vídeo. Vim modr crached me up

[@ptah956]

This is great for a cassette futurism aesthetic

[@Bigman74066]

Your mirrors can be narrowed. That will reduce the vibrations and improve the bandwidth

[@georgkrahl56]

There are some small modules wich produce x and y signals. Displaying these on a scope in xy mode, a clock, analog or digital selectable, appears.

[@michalnemecek3575]

2:14 your inner ElectroBOOM is showing 😂

[@Progs420]

This! Is AWESOME!! well done!

[@flannelshirtdad]

How about using hard drive head movements?

[@aprcktiplaal9293]

nice electroboom move of touching the live electronics whil it blows up lol. my idea with a spinning mirror prism is still in the air :P

[@FoxyAnimater]

Try it making a program to emulate Vectorex with it. The Vectorex game console was one of a kind in that it had no pixels. And the screen you created is the exact type of technology that the Vectorex used.

[@Larz99]

You make the exact same sounds that i do when I "exceed the operational voltage" of my components. :D