unigrampa's Laboratory No problem my friend, say would this work for electrical stuff like checking the frequency of Electronics, and stuff. If so I know it’s doesn’t have a gage or anything to show what that frequency is your testing or checking but I guess you could use test tone frequency’s to make a outer graph I guess is what you would call it.
It very well could. Old analog oscilloscopes for the last century were tubes similar to this, with a graph tossed in front of the glass. You adjusted knobs to make the wave form comfortably visible. Scopes like this never had any auto frequency measurement like today. A separate device would have been used for that. This TV scope is just as functional as an old oscilloscope like that if you ignore the distortion from the inductance. That is the only real disadvantage of this setup. Coils instead of charged plates inside the tube. If you can live with that distortion and understand different frequencies will be displayed non linearly and some frequencies may be invisible, it's a perfectly functional scope otherwise.
Hello love the video! I was wondering if there was a possibility of a future updated tutorial on how to do this? Or even a part 2 video with different modifications?
*OOzes superior about his aviation grade relays .... *Proceeds to make a birds nest of wires between them. (Just playing! This was highly informative and I am even more grateful for your contribution!)
TLDR; love this video, best I've seen on the subject. You're a great host and your channel reminds me of the good old times. Subscribed, hope your channel can grow and reach more people. I like electronics, but I live in a shit country and, as expected, in poor as shit so can't have anything new. I'm even scavenging solder, no need to say anymore than that. Even so, I have a nice little hacker hole and I learn more and more every day, I love fixing and building things. I have some basic tools but i come to the point where I need an oscilloscope to understand circuits, components and their failures better but again, poor as shit, so I can't even afford those dinky little 100khz hand held ones made in china that are sold in kits for $17-$30, and even if I could shipping it here is a nightmare. Searching for the on local online markets is just worst, the cheapest functioning-looking one I found was an HP from 1969 that has several missing knobs and buttons and looks like it was used in a foxhole, and the guy wants $130!! Everything else, digital or analog is more expensive. On ebay I found some sub $50 ones that looked real good, maybe if I raw rice and water eat once a day for half a year I could get it but shipping... Oh God shipping. So I decided to see if I could make one, it seems like a lot of people have and it's a reasonably popular project but almost everyone uses them for audio instead of voltage measurements. This video of yours is not an exception in that aspect but it is in that is by far the most detailed, simple, effective, no-bullshit, hands on approach I've seen after searching all over. I'm sure I can not only replicate what you did, but also build on it to make a semi-functional lab oscilloscope that maybe won't compare to a real analog scope but it will at least let me visualize some waveforms and learn something. Taking a look at your channel I see so much dodgey and sketchy stuff I can't believe it, it's like it's the 2008 youtube i loved and miss. Just people doing stupid shit and projects for fun. I'm gonna binge watch all now. I can't believe you don't have more subs, it's insane, you guys deserve the attention. I'm very happy to have found you and I hope to see much more from you. Also, the filming was great but just a small suggestion, get some lighting when you film inside, it really boosts the quality of the video. Hack some car lamps onto a stand or something, that'll do just fine. 😂 Cheers.
Thanks so much! I find that given enough time, I find a use for every single object laying around. I've stopped throwing away things I can't think of a use for because i always regret it
@@unigrampa Same, it happens everytime I'm building something, I get that "aw shit, I threw away X thing that had X component I could have used" so now I have a stack of old circuit boards that might kill me if it collapses on me. I better heatgun the components out before it reaches the roof, it's so much faster to salvage en masse like that. Also Jesus, youtube mobile butchering my comments. I teach english ffs😂
If I were to say, just hook up 2 DPDT on-on switches. One for both the vertical and horizontal coil, then wire one end to an Audio jack and the other to the board of the tv, would this be a problem at all?
I believe you are asking if you can use switches instead of relays. This should be possible, just replace each of the relays in my design with a switch. Ignore all the wires going to the relay coils because you'll be operating the relays manually, so to speak. The two relays that are tied together will probably need to be two separate double pole double throw switches glued together to make a quad pole quad throw. If you dont physically glue those two switches, and you flip one and not the other, I believe you will cook the TV board. From what I remember.
Hi maybe you can help me. I tried doing a oscilloscope similar to yours but without all the relays and resistance that you have. I actually saw a couple people doing it in a simpler way in which they only connect the 2 deflection coils pair of wires to 2 audio jacks socket and that seem to work perfectly. That's what I did but I'm running through a big issue. What I get when I turn the tv on is the initial dot in the middle but it stays super small and becomes really really crazy bright and after a few seconds i hear a small sharp pop, the display shuts and after a big static noise appears ,coming from the back of the tv and continues until I unplug the tv. Any ideas on what's wrong ? I would greatly appreciate if you could give me any hint, thanks a lot.
I will have to think about this. Try re attaching one of the coils back to the TV the way it was? And leave the other disconnected. This should produce a line. I wonder if there is some issue with plasma forming inside the tube from the current through the single spot and gradually decreasing the resistance until it overloads
Just make sure your oscilloscope TV is on a separate channel on the amp, separate from any speaker, and just adjust volume on that channel until it looks appealing. There's not really any risk of burning anything up, coil is pretty monstrous.
man, this is amazing, now i want to do this with my crt monitor, but i have problem, when i disconnect vertical deflaction coil my monitor wont turn on, like in this video th-cam.com/video/nt0Uiz1FnpA/w-d-xo.html do you know if i could connect a coil from other model of monitor or it needs to be exacly the same
Sorry its taken me so long to get back to you. All we need to do is trick the TV into thinking the coil is still connected. You can make your own coil with a similar gauge of wire wrapped around some cardboard or something. If you can get to a similar inductance as the original TV coil, it will work to fool the board. If you have a meter that can measure inductance, that will make your job much easier.
Perhaps the most complete explanation of this on youtube
luv it
Great job with the video! Thanks for explaining everything.
Dude you are amazing, just found your channel subscribing and like the video
Thanks so much! I'll try to keep it coming
unigrampa's Laboratory No problem my friend, say would this work for electrical stuff like checking the frequency of Electronics, and stuff. If so I know it’s doesn’t have a gage or anything to show what that frequency is your testing or checking but I guess you could use test tone frequency’s to make a outer graph I guess is what you would call it.
It very well could. Old analog oscilloscopes for the last century were tubes similar to this, with a graph tossed in front of the glass. You adjusted knobs to make the wave form comfortably visible. Scopes like this never had any auto frequency measurement like today. A separate device would have been used for that. This TV scope is just as functional as an old oscilloscope like that if you ignore the distortion from the inductance. That is the only real disadvantage of this setup. Coils instead of charged plates inside the tube. If you can live with that distortion and understand different frequencies will be displayed non linearly and some frequencies may be invisible, it's a perfectly functional scope otherwise.
Great video mate! You definitely made sure we all knew you have $200 FAA certified relays lmao
They're so shiny and heavy
He knew I clicked the Like button
I know everything
Nice video! The most indept video for this topic i've found! "Most people aren't special like me and have rotary encoders" lmao.
Thanks!
Hello love the video! I was wondering if there was a possibility of a future updated tutorial on how to do this? Or even a part 2 video with different modifications?
Haven't planned one
There is a Brazilian channel where the owner made one of those with double channel! his name is Rodrigo Negrelli
*OOzes superior about his aviation grade relays .... *Proceeds to make a birds nest of wires between them. (Just playing! This was highly informative and I am even more grateful for your contribution!)
I have a moral objection to zip ties because I abhor plastic
@@unigrampa I like your style
parabéns,ficou show,também to construindo um
the best
TLDR; love this video, best I've seen on the subject. You're a great host and your channel reminds me of the good old times. Subscribed, hope your channel can grow and reach more people.
I like electronics, but I live in a shit country and, as expected, in poor as shit so can't have anything new. I'm even scavenging solder, no need to say anymore than that.
Even so, I have a nice little hacker hole and I learn more and more every day, I love fixing and building things. I have some basic tools but i come to the point where I need an oscilloscope to understand circuits, components and their failures better but again, poor as shit, so I can't even afford those dinky little 100khz hand held ones made in china that are sold in kits for $17-$30, and even if I could shipping it here is a nightmare.
Searching for the on local online markets is just worst, the cheapest functioning-looking one I found was an HP from 1969 that has several missing knobs and buttons and looks like it was used in a foxhole, and the guy wants $130!! Everything else, digital or analog is more expensive. On ebay I found some sub $50 ones that looked real good, maybe if I raw rice and water eat once a day for half a year I could get it but shipping... Oh God shipping.
So I decided to see if I could make one, it seems like a lot of people have and it's a reasonably popular project but almost everyone uses them for audio instead of voltage measurements.
This video of yours is not an exception in that aspect but it is in that is by far the most detailed, simple, effective, no-bullshit, hands on approach I've seen after searching all over. I'm sure I can not only replicate what you did, but also build on it to make a semi-functional lab oscilloscope that maybe won't compare to a real analog scope but it will at least let me visualize some waveforms and learn something.
Taking a look at your channel I see so much dodgey and sketchy stuff I can't believe it, it's like it's the 2008 youtube i loved and miss. Just people doing stupid shit and projects for fun. I'm gonna binge watch all now.
I can't believe you don't have more subs, it's insane, you guys deserve the attention. I'm very happy to have found you and I hope to see much more from you.
Also, the filming was great but just a small suggestion, get some lighting when you film inside, it really boosts the quality of the video. Hack some car lamps onto a stand or something, that'll do just fine. 😂
Cheers.
Thanks so much! I find that given enough time, I find a use for every single object laying around. I've stopped throwing away things I can't think of a use for because i always regret it
@@unigrampa Same, it happens everytime I'm building something, I get that "aw shit, I threw away X thing that had X component I could have used" so now I have a stack of old circuit boards that might kill me if it collapses on me.
I better heatgun the components out before it reaches the roof, it's so much faster to salvage en masse like that.
Also Jesus, youtube mobile butchering my comments. I teach english ffs😂
If I were to say, just hook up 2 DPDT on-on switches. One for both the vertical and horizontal coil, then wire one end to an Audio jack and the other to the board of the tv, would this be a problem at all?
I believe you are asking if you can use switches instead of relays. This should be possible, just replace each of the relays in my design with a switch. Ignore all the wires going to the relay coils because you'll be operating the relays manually, so to speak.
The two relays that are tied together will probably need to be two separate double pole double throw switches glued together to make a quad pole quad throw. If you dont physically glue those two switches, and you flip one and not the other, I believe you will cook the TV board. From what I remember.
Hi maybe you can help me. I tried doing a oscilloscope similar to yours but without all the relays and resistance that you have. I actually saw a couple people doing it in a simpler way in which they only connect the 2 deflection coils pair of wires to 2 audio jacks socket and that seem to work perfectly. That's what I did but I'm running through a big issue. What I get when I turn the tv on is the initial dot in the middle but it stays super small and becomes really really crazy bright and after a few seconds i hear a small sharp pop, the display shuts and after a big static noise appears ,coming from the back of the tv and continues until I unplug the tv. Any ideas on what's wrong ? I would greatly appreciate if you could give me any hint, thanks a lot.
I will have to think about this. Try re attaching one of the coils back to the TV the way it was? And leave the other disconnected. This should produce a line. I wonder if there is some issue with plasma forming inside the tube from the current through the single spot and gradually decreasing the resistance until it overloads
I’m trying to send my guitar amp signal through my tv oscilloscope that I’m building. Do you have any tips on that?
Here for the same reason lol. Lmk if you figure it out
Just make sure your oscilloscope TV is on a separate channel on the amp, separate from any speaker, and just adjust volume on that channel until it looks appealing. There's not really any risk of burning anything up, coil is pretty monstrous.
What are the specs of the relay? We really need to make this, but $600 in relays is a bit too much for what we want to do with it.
Any cheapo Ebay relay will work as long as it has 2 NC, 2 common, and 2 NO pins.
@@unigrampa Thanks!
Could we get copies of the diagrams? We could pay you for your time.
I'll have to see if I can find them
@@unigrampa Thanks. I am a visual person.
Did anyone else listen to this on their TV oscilloscope?
Savage
man, this is amazing, now i want to do this with my crt monitor, but i have problem, when i disconnect vertical deflaction coil my monitor wont turn on, like in this video th-cam.com/video/nt0Uiz1FnpA/w-d-xo.html
do you know if i could connect a coil from other model of monitor or it needs to be exacly the same
Sorry its taken me so long to get back to you. All we need to do is trick the TV into thinking the coil is still connected. You can make your own coil with a similar gauge of wire wrapped around some cardboard or something. If you can get to a similar inductance as the original TV coil, it will work to fool the board. If you have a meter that can measure inductance, that will make your job much easier.