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has anyone tried to make a Big Screened Televsion into a working synthesizer? can it be done? |
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man for this i bet there's a whole other messageboard, where do i start? there's what looks like a busted Big Screen T.V. sitting on the lawn a couple houses away. Can't just let a broken screen stop it, looks like some anger went into the screen. |
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i am obsessed with this and i have no clue about any of it. I don't even have a dolly to carry it home, can't use a skateboard. |
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I expect you could use a TV as a monitor for a laptop/PC running a soft synth, but getting touchscreen capabilities and stuff like that so you could actually USE the TV as a control interface would be very difficult to say the least. |
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Yea as far as circuit bending the tv itself I have no idea. If it can be done, guy would know. Of course, if you have a sampler, a synth with an external input, or even a bunch of fx pedals you can get good results just from the audio output of the tv. Of course it being a big screen won't help you for that, (unless you lay it flat and mount your pedal chain on top of it), and you might get better results just getting an old UHF dial tv from the salvation army (although this change from analog to digital broadcast is going to keep the rabbit ears from working, so hrm on that). Dial tuners on radios or tvs are cooler though because you can blend and modulate the tones and frequencies. |
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....Mind you don't wanna go round poking wires in a TV that runs off mains power... |
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a toaster then, can it be done? |
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was half baked idea, i walked over to it today and it was stupid, maybe an oscilloscope though |
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Dronology |
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never mind that, lets turn a synthesizer into a big-screen television. I heard IDM's dead anyways |
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Dude, been there, done . |
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Might as well use a Wii remote. |
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i have an ... in fear of an implosive accident or worse however, i haven't the guts to test it... someone has a clue? : like, i need AC current into the black/red plugs, and some low voltage into the "signal input" mmmh right? |
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Plug it in. If where you live has a fuse box, you should be fine. Just stand well back and wear rubber gloves. Make sure you're grounded too. |
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Do not make sure you're grounded. This is a good way to electrocute yourself. I am an electronics engineer, you can trust me on this one. If you do power it up make sure you have a way of turning it on and off well away from the scope. If your wall socked has a switch, use this, or perhaps just yank the plug from the wall. I don't think the tube will implode. Normally this only happens when you drop them. Due to the lower pressure inside the tube it smashes inwards and tiny bits of glass go everywhere. So don't drop it! I would cover the exposed sides with some wood or something just incase any capacitors or anything explodes (unlikely but don't risk it) It looks very homemade. I'm not sure what voltages you need to put into those sockets. It may well be mains voltage. I would check to see if the fuse connects in line with the red socket and if so see what value the fuse is. If its voltage rating (written on it usually) is the same (or slightly higher) than your mains AC voltage (230V in Germany(?)) then I guess you plug the mains into the red and black sockets. I would use insulating tape to cover any bare cables which carry the mains electricity and I wouldn't poke around near there when it is powered up. The signal input socket is indeed a low voltage level. I would start with say a AA battery or similar. Set the scope to be DC coupled and set the vertical scale to 0.5V/div. Set the displayed line to be half way up the screen. connect the battery to the input (connect the - and + terminals to the outer and inner conductors on the input). The line should move by about 3 squares either up or down depeding on the polarity of the battery(i.e. which way round you connected it). Usually the inputs are BNC sockets, but yours looks different. wikipedia has an article on oscilloscopes which may give you some info on how to use it if you're unfamiliar or you can ask me if you get stuck. |
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thanks for directions! i tried using it last night and surprisingly, a standard 9V DC power adapter seems to work just fine for powering the CRT. is what the screen will show with no signal in, and is a 440 Hz sine wave generated by Audacity. the oscilloscope is back in its rack casing now... this will hopefully absorb some testicle-unfriendly x-rays :| guess what i have here is just a display unit, as there are no controls whatsoever except for brightness... also no grid on the screen (?). no idea to what use this thing can be put. dunno, is a crt capable of generating anything interesting? signal input plug is cinch btw. i stole it from a basement storage room at uni... and there's more stuff there, most looks like oldschool 60's or 70's physics measurement equipment in racks.... maybe another raid will help :D |
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btw if a higher frequency sine wave is sent into it, the number of horizontal bars will increase.... and with music sent, the image is pretty much a flashing around variation of the idle one... |
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yeah it's not an oscilloscope I'm afraid to say. Looks like the display unit for something. See if you can get an oscilloscope in the storage basement. It will typically have many more controls and like you say a grid on the screen. The CRT could be used for making silly patterns and things but really it's not worth it. You can pick up a cheapo scope on ebay for hardly anything. A proper scope has the most essential circuit, which is the trigger circuit. This ensures the waveform is stable on the screen. Your CRT won't have this so even if you do add an input scaling circuit (like a potentiometer) and adjust the sweep time of the horizontal deflection circuits it still will look horrible. If you take a few photos next time you go for a raid I can see if I recognise anything. This thing you have is essentially a piece of junk on its own. I doubt it's worth the effort in even trying to get it to do something vaguely useful/interesting. |
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Gah fuck, my electrical knowledge is clearly totally warped lol. |
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Some guys turned a TV into a "scope"... obviously not very accurate/an actual oscilloscope at all, but it blurted out loads of lissajous patterns which is cool if that's all you want it for - pretty patterns. If you want it to measure/compare/tune signals, don't even go there. Buy a used scope off eBay, they're usually fairly cheap. |
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okay will post photos next time i get my hands on that treasure room key. it is pretty much stuffed to the ceiling with old, heavy weight electronics. |
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