How to build a touchscreen from monitor with broken back-light.
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- Опубликовано: 23 сен 2013
- One of my 20 inch monitor's back-light broke, so I took it apart to build a touchscreen with a wiimote (wii remote) and some normal 12W LED lights. It's like a little coffee table with a touch screen monitor as a surface.
To see where this whole video is leading to, just go all the way to the last five minutes or so.
In the video I referred to a 22 inch monitor which is wrong. Sorry about that. It's one of the older 20 inch monitor models from Chimei and the actual size is 16 to 12 inch which makes a 20 inch in diagonal. They appear to be bigger cause of their hight.
The actual measurements for my little interactive "coffee table" are
Hight 30 inch or 75 cm
With 21.5 inch or 54cm
Length 21.5 inch or 54cm
The size of the screen demands the hight. For the wiimote to work you'll need a certain distance.
The back-light is produced by two 12W LED 110V light-bulbs.
The inside of the box is painted all in white.
For the Ubuntu version, you can use Python-whiteboard for calibrating the wii-remote.
For windows, there are several free and commercial options.
Johnny Lee is the original inventor
johnnylee.net/projects/wii/
www.wiimoteproject.com/
Uwe Schmidt programmed a Java multi platform based version which can run on all platforms.
www.uweschmidt.org/wiimote-whi...
So, don't throw away your broken monitor! 
Наука
This was awesome!.very enlightening use of monitors. This gave me a wonderful idea for a product I can sell and that I myself as a professional artist would use daily. Ill follow up on this idea of mine soon. im going to draft out some designs. Thanks for the inspiration. :D
Thank's!
Good to hear that you liked it.
Let me know how your ideas/project turned out.
I'd be interested to see some more designs.
This guy sounds like Kim Jong un from the interview
That is really cool bro! really makes me wanna build my own,I use raspberry pi's but have mostly built pentesting devices,
Great job! Thanks!
Great Idea! The white stuff you ask about at 9:12 might be some sort of heat-diffusing paste. I found it around capacitors and coils in the monitor I just opened.
My Idea is to make a beamer with the lcd display in combination with a bright-room-projector which I bought for 25bugs.
but when I found the light-source, and these layers of ultra-thin filters and lense, I thought wow, there must be more! So I found your video, and wow again! Cool!
Helgohr thermal paste ment to hold current
You have placed Wii mote behind the display then how it can sees the IR pen?
well done and i really love this project. But my concern is how did you do the connections? We saw you disassembling the monitor but did not see how the re-connection or assembling was done. I lost on the way. Also is it still connect to the System unit or with iPhone. I really need details and if you can please explain it to me.In all i love it and wanna do same. Thanks
Yeah that is glue and it's on there to absorb vibrations so the board operates quietly when the inductor coil is humming at 60hz and the speakers are shaking the board.
You can clearly see some capacitor tops are dome shaped, meaning the gas inside has pushed and blown them. Its a very simple fix. I have fixed a few TVs by doing this.
If you took the original polarizer from the monitor, and set it on top under the glass, would it not spread the light all over the monitor, thus fixing the dark problem?
Great idea!
dunno if you guys gives a damn but if you're bored like me during the covid times you can watch all the latest movies on InstaFlixxer. Been binge watching with my girlfriend for the last months =)
@Nehemiah Kylan yup, have been using instaflixxer for since november myself :)
It appears that the top of the capacitors metal expanded and therefore leaked out the electrolyte. This happened on my motherboard due to the short circuit within the capacitors. So I replace them and that solve the motherboard issues. This is the same problem in any power supply especially the one in your monitor due to the fact that the backlit function was not staying on due to the failure in the power supply. The capacitors act as a filter in the power supply.
Hi. Thanks for the video. If you take the screen apart like this, do you risk increasing the chance of the screen undergoing EMI interference and such? Does the wood and the tape insulate such interference?
I did not notice any Electromagnetic Interference (EMI) at all. Wood,when dry is a very good electric insulator, though it should not protect from EMIs nor cause them.
Lots of magnetic fields are happening but none are being an interference nor will any magnetic power ever be one in electronics in this way being it's a separate signal let alone a completely different type of signal. If it was a hz and u were adding another board with a crystal oscaltor/Bluetooth component then a interference is 100% gonna be especially if not in sync yet.
Awsome *.*
Hi David, I am curious how you got the touch screen to work and what you used as a processor for the operation of the device. Do the touch screens come preloaded with the locational touch drivers and such? Thanks, and great video
BJCN100
You'll need a wiiremote from Nintendo. Better use the older ones (not the wii plus) The wii remote will cost you about 10 US$ . You can either use the open source driver from Johnny Lee or the commercial version from smoothboard.
If you decide to use Ubuntu 14.04 the linux operating system. You'll need at least a 256 ram Video card like NVIDIA and 1 Gigabyte of memory, better 2.
The Python-whiteboard software under Linux is open source and therefor for free.
You'll also need an Infra-red LED pen. The IR-LED costs 10 Cents + 1.5V battery and the on off switch, which I designed to activate once the pen touches the screen with little pressure.
Read my description below the video.
BJCN100
I forgot!
The Linux python-whiteboard also supports the Wii remote plus in Ubuntu 14.04.
Wait a few second for the caps lol. Short the caps out with a 5 W resistor. Replace all the caps on the power supply with high rated ones. This guy has no idea about connectors. He is no tech. But I enjoy it.
Yeah!
Me too!
42:05 "Inside the virtual machine I´m running Windows XP....Professional version i bought some time ago..."
Yeeaaaaaaah, riiight...
Lol.... I thought I was the only one that felt why the explanation
already ive identified 4 caps that are bulged and could be the reason why the back light dont work
make that 5 caps
Andy Eldemire headstoning,the top pops up or bulges
hallo,
what programms on ubuntu have you used to demonstrate you touchtable? I just wish to install thoose too.
regards
Marijus Luinys
To activate the wii remote control, I used python whiteboard.
It's in the Ubuntu software center. However, Ubuntu 12.04 only has the version 1.0. which doesn't support the newer wiiremote plus editions.
Luckily, you can download the deb file or the source from here and install the 1.0.3 version that supports all wiimotes. github.com/pnegre/python-whiteboard/downloads
You need Bluetooth for that.
nice
By your video, I can see the reason why the monitor in not functioning correctly! there or two that I can see "leaky capacitors". Change those with the same value or slighty different ~ +/-5% of the original capacitances if you don’t have any laying around . I make it a practice to up the voltage on my replacements to withstand future voltage spikes
OK rhe white stuff around the capacitors n other components is only being a rubber caulking so to hold the components being that if dropped it now will not break as it has in the past on such things declared as dumpy today lol. If you cover a board completely u can even throw it like a football and play catch with it. That's a joke but not about the caulking, it's only that alone and nothing more. Great video by t he way
a glove some membrane switches and infrared bulbs would make for a nice mouse
This moniter can be conver into lcd tv
is it coffee proof?
@ Maverick
Of course, I could have replaced the capacitors. However, that won't leave me with the IR Pen touch function. I won't have a coffee table and it won't be much fun soldering on that miniature electronics. I saw a touch screen flat panel yesterday.
It's a 23 inch monitor for 300 US$. A used 20 inch flat panel, I can get for 20 bugs.
Like I said, it's about having fun and the experience.
davidcandlelight 20 bugs???.,...entirely too many bugs....RAID...kills 'em dead
I put all customers junk into a trash bag w/ pesticides before taking apart, people are nasty and I hate bugs
davidcandlelight hey bro i am fan of your channel...i have question please help me....i got a second hand acer T231H touchscreen
and when i connect the monitor to my computer the touch screen is not working but the monitor is working normally.
i have windows 7 home premium 64bit please help i need this for school.
Mark Cob he means BUCKS
Actually, I meant BUGs. :)
davidcandlelight lol
I don't quite understand how you made it into a touch screen. I think you maybe skipped a few steps we didn't get to see.
You need an IR pen to touch the screen.
That's a touch screen. But not a finger bugar touch screen!
He sound's like a doctor from a horror game "My favourite tool the elecktric screwdrive/drill l"
+Jelle Feitsma You write like one of my patients.
thats epoxy glue to prevent aching of electricity between the tow legs, your capacitors are bulgy at the top which means there "no good"
A lot of those caps are bulged lol. also at 10:19 you can see an arc over. from the control board to the power supply.
Nah, it's a flicker of the backlight - you see it clearer the second time round - it's just because the caps are gone, and the backlight can't start...
it uses the caps to kickstart....
so good!! how to created the pen?
Vo vonne se in Deutchland?
So, did you replace capacitors on PSU board?
There's 5 blown capacitors
No, I didn't. I think these were for the back-light and do not affect the monitor itself.
I know but you can fix lights if you replace those capacitors
I know, I thought so, too. However, these microscopic circuit boards nowadays look a little overkill to me.
With the right equipment ok. I anyway wanted to experiment building an infra red pen touch screen coffee table monitor. Therefore I did not see the need for replacing those capacitors and a few month later the touchscreen monitor is still working. Even from the upside up angle, it looks good now. I had to tune up contrast and white-balance for that.
All that was wrong is the capacitors need replacing on the power board.
electric screw driver?
if one always think he knows and not certain he knows, leave it alone.
So you will never know!
There is just way too much pointing in between doing things for to enjoy it but i do like the project
HAHA, a bit after 8:48 he says i stink
+kyran onderwater No, I did not say that, but I stink your soundcard must be broken.
kyran onderwater he said think :P
You have got yr video to help you to remember the assembly sequence..:) , miss a step.
The wood you used to make the sides of the cabinet have the grain going across, instead of down, So I hope you're not putting too much weight onto it.......... With the grain going across from the way the woods been cut, it's very weak, if you bump into the cabinet by mistake, it could be enough to break it in half.........
Tip, if you don't know how to tell which way the grain is good and bad.........
Just look at the patterns and lines, if it's a long piece like the wood you used for your cabinet, the grain has to go down with the cut....... Do you see, how the sides of the cabinet are bowed if they weren't already , that's to do with the grain going in the wrong direction........
Test it out one day, if you have a spare piece of pine you used for your cabinet, just headbutt it, or knee it, and you can clearly see how easy it is to break.....
Now try it with the stuff you used for the frames (The grain going along with the cut) that are the same thickness, you can tell, they're hard as guts to break........
Just to let you know, you might find this handy for other things.........
+Shaun Templey Thanks! I already knew that.
This was a low budget project and I used the wood that fitted my needs, therefor I did not buy a big board and cut it the perfect way. I should have mentioned that in my video.
Thanks for pointing it out.
hi davidcandlelight i want to be like you tell me how plz and what's tje step that i should i take for being electrical enegeneiring like you
Well another sign of bad capacitors are they smell like rotten fish...
Pls give it to me
OMFG. Would you please stop saying "open" instead of "remove". That's so damn annoying.