How to lower wall outlet power?

Hi, I need a circuit to change the AC 240v (UK) into 5v 1A, What is the SMALLEST possible way to do this. I know I could use an adaptor but it there a smaller circuit that could be done?

Question by versos-tk 5 years ago  |  last reply 5 years ago


is there any way to make a computer screen into an s video or a composite yellow screen without opening the it up? Answered

I have a monitor to S-video / composite yellow adaptor (picture) and since it can use a Tv as a screen then cant it make a monitor into a "tv screen"? I think that by stripping the wire that connects the monitor and the computer tower and somehow adding 2 leads that go to a composite yellow connector (yellow adaptor in picture) then i should be able to use it as a screen. WILL THIS WORK?

Question by ccrh2008 9 years ago  |  last reply 9 years ago


Guitar usb cable ?

How make Usb-guitar cable?   

Question by deemgood 8 years ago  |  last reply 8 years ago


ipod cable?

I want to connect my ipod to my car radio ( '95 volvo original radio sc-811 with an option to plug a cd changer) with a cable mini-din conn. in one side and a ipod conn. in the other side, so I can listen and charging mi ipod at the same time. Do someone knows how to do it?

Question by DimasP 9 years ago  |  last reply 9 years ago


how can i fix my broken pc adaptor pin?

Please i used my pc and i tilted it to see the authentication number and my laptop went off because the pin got broken,how can i fix this?

Question by kojogunshot 10 years ago  |  last reply 10 years ago


How to Put a dead GPU laptop to use ?

I bought an HP laptop (hp pavilion dv2000)from a friend who sold it to me as it never showed up the display .I though i might replace the Graphic adapter but later discovered that the NVdia trouble chip is integrated on the motherboard.The GPU heats up .I repaired it twice in a repair shop ..all they did was the heat-gun treatment on the chip and applying thermal paste . the treatment worked for two days and the display is gone again .I did the repair twice .I know it boots but does not displays anything .I don't mind opening the laptop apart , but i cant let it eat dust at one corner...what can i do with this laptop ..I have my mac as my main machine ..any ideas !!?

Question by nabilmilestone 8 years ago  |  last reply 8 years ago


How to test computer screen power adaptor for failure? Answered

I haven't used my Wacom Cintiq 24HD screen in a few weeks and it's not working properly. After disconnecting the power supply from the wall socket for a few minutes and re-connecting at most I get some flickers of the screen, followed  quickly by turning off entirely. If the adaptor keeps power connected then the screen won't do anything, and so I figured it should be the power adaptor that could be failing. I'm really not knowledgeable with electricity so I thought I could ask for some help here: - The power supply adapter has a light that is faintly lit while connected; - It reads *Output: 24V =-=-= 5A* on the back - The end terminal is similar to a Mini DIN Connector type connector, round with 4 pins that are arranged in a perfect square, but not as standart I think. How can I check if the power supply is working properly with a multimeter like the one in  the picture?   I did try setting it almost like the photo, one step to the right (20 V, black on COM and red on VΩmA), and when I touch the pins inside the connector I get a spark out of it. Pressing the black tip as well against the outside ring always result in a spark from the red tip and values reading erratic on the multimeter's screen. Can this be used to make any sense of this? I've looked for power supply replacements and they're looking to be very expensive to get directly from Wacom. One final question: if it is failing, could I try to get some alternative solution working here? I don't know, using an universal adaptor and request soldering a more common connector to this Wacom proprietary one's tip? Thank you in advance

Question by acn 3 years ago  |  last reply 3 years ago


How can I convert a two pronged adaptor to a three pronged plug?

I have an electric shaver with a two pronged charger.Is it possible to fit a three pronged plug to it?Thanks.

Question by fredbobmccreery 10 years ago  |  last reply 10 years ago


How to extend the USB cable

How to extend the USB cable from 1m to 10m

Question by archy_wanted 9 years ago  |  last reply 9 years ago


how to lub enclosed cables? Answered

Question by rabbit3 8 years ago  |  last reply 8 years ago


how to uncoil a USB cable?

Hi! I have a coiled usb cable but is there a way so i get a straight usb cable again, because it kinda pulls the usb cable out of the female usb port when i use it. It would also be way longer if it isn't coiled. Greetings Ingmar from the Netherlands

Question by ingkiller 4 years ago  |  last reply 4 years ago


how to build rs232 cable

Hi    I have a 9 pin rs232 connector without wires. I wonder how do I connect the wires to the rs232 connector? Do i need special tools for that? Please  help! Thansk!! Regards

Topic by Sherm1948 1 year ago  |  last reply 1 year ago


3G "adaptor" for ADSL Router

I was looking for a 3G Router and I was thinking about the ADSL router I have at home and if I can use the same one with the 3G Huawei card that I have. I don't have a landlines because the telecoms company has no infrastructure where I live.   So would it be possible to have some kind of adaptor that connects to the port where the phone line goes in but on the other end have a USB port that you can plug in the 3G card? There would need to be some kind of electronics/software in between I suppose. Any Ideas on how this can be done or if it can be done?

Topic by kokaine 7 years ago  |  last reply 7 years ago


usb guitar cables???

Any ideas on how they work and maybe on how to go about making one??? any help is appreciated will pick best answer.... or maybe a guitar usb interface???

Question by aritoner 9 years ago  |  last reply 2 years ago


how do hook up cable, right? Answered

I have the tv hooked into a black box that has chan3-4 on it, in order to watch dvds/vhs', but when i ran a cable cord through the back, and used a splitter, so i wouldn't lose the movie option, it now doesn't show the movies unless i unhook the cable and even then there is a noise you hear along with the movie. i tried seeing if it's the channel settings either on the tv or the black box, it is not.

Question by 10 years ago  |  last reply 10 years ago


ethernet cable replacement for wireless?

Hi! new member with a question!  I just received my tv box which connects with my router via ethernet cable.is there a way to replace the cable?i saw about plc adaptor but it is too expensive for me! is there another way? eg a wifi receiver for plug with ethernet line etc? hope you understand what i mean cause my english are not so good!!!thank you!!!

Question by aelin 8 years ago  |  last reply 8 years ago


How can I run DC motors found in a CD Rom?

I have a DC Adaptor with variable voltages and I applied the wires to the terminals of the motors but they dont run. Am I missing something. Can they be run by simple adaptors,

Question by AwabHassan 3 years ago  |  last reply 3 years ago


Sunrise lamp adaptor alarm

Hi guys and compliments for the comprehensive forum! I would love to have one of those sunrise simulator alarm clock out in the market but since I have no bedside table, and the wall cover with wood on one side, I am looking for a way to make an adaptor to start dimming my existing lamp at a precise time, like 7 am. I found out this product: http://windhovermfg.com/model/308  but the producer told me it does not work outside US (I'm from Italy) since we have 220V main and the gig would fry out. Also he told me it cannot be modified and power adapters don't work. Any idea on how to build one? Thanks a lot! Sam

Topic by samumar82 6 years ago  |  last reply 6 years ago


How do you shorten your USB cable?

I have a 50 foot "Enthernet cable" I need to make it, 30 feet can you explain how to do this.

Question by ttony329 7 years ago  |  last reply 7 years ago


pls help how to make a cable connector / converter

Anybody knows how to make this? the cable connector. thanks.

Topic by bite_brian 8 years ago  |  last reply 8 years ago


can i Splice A usb socket extension cable into power cable???

Hello, I have a little sub woofer box and 4  speakers connected to it, it has a line out 3.5 mm headphone jack which i connect my iphone to, the Subwoofer box has a power cable which plugs into the mains power. This is for work and it does the job just fine. my question is though i want to put a USB socket in the subwoofer box so i can charge my iphone at the same time via USB. Can i splice my usb socket extension  cable  into the power cable??  The power cable does not have an AC adaptor on the end if it just the plug. If this cant be done How can i get power to usb. Thanks in Advance.

Topic by Benji29 6 years ago  |  last reply 6 years ago


How to make OBD II to USB adaptor

Can any body know or did any body have a project of making OBD II to usb adaptor. Kindly post with pics.. I want to make one to use with OBD II software on computer.

Question by waqasjamil 7 years ago  |  last reply 1 year ago


Cable remote control

Hi all I am interested in building a specialised tracked vehicle but instead of your "normal" remotes I would prefer a cable remote control that can at least use 12 or more functions. I actually look of building this in to a small Metal Case like you use for camera equipment with a monitor in the Lid and include the battery pack to power everything.  Anyone got any ideas of how to build such a remote and the outlay of the functions. I have some knowledge in electric and schematic. I do have a CTC 3D Printer with Dual Extruder but I only just got this one and have so far not used it as I want first to get the feel for it on how to work with it and look up a variety of videos on YouTube before I use this one in anger. I also do not yet have the Case as I am still bidding on one on eBay. I plan to start the build in September / October and be looking at the moment for a large (1/16 or larger) Tracked Vehicle Chassis. I once did see one in a Chinese Online Shop but cant find it again. I am sure that I bookmarked it but again, I cant find it. So I am looking over various online shops for a set but so far I had no success. If anyone has build something similar before please get in touch with me as this is my first real project that i would really love to pull of over the winter time to hopefully use next summer.

Topic by BernhardK4 2 years ago


How to remove an M42 Lens mount? Answered

Hello, I recently bought an adaptor for my Canon 600d ( rebel 3 ? ) to allow M42 lenses to fit to it. That was fine but the adaptor is stuck on the camera. It is not cross threaded. I have tried using slip-jawed pliers really hard, but not as hard as I could because I was afraid of damaging something. There is a small hole in the front of the adaptor if I press that and turn it , the adaptor separates, so I stopped that method. Any advice ? If not , I'll just go with the pliers as hard as I can. Thanks

Question by FriendOfHumanity 1 year ago  |  last reply 1 year ago


how to connect playstation cable to usb pc?

I have V3 interact steering wheel of ps2 i want to connect with pc. i know there is a converter but it is not avallble here

Question by doubleagent33 8 years ago  |  last reply 8 years ago


How to strip cables to free the copper inside?

E-waste collectors in countries like Ghana collect cables and then burn them to get rid of the plastic and then sell the copper. This process is not environmental friendly and harms their health. I'm working on a project to find better ways to treat imported e-waste. Is there a better way to strip cables that would not imply burning, and that would respect the worker's health? Thanks!

Question by rf.font 6 years ago  |  last reply 6 years ago


How to build a network cable certifier?

I have a fairly extensive lan in my home that is constantly expanding. I want to do some custom wiring and started looking into building my own cat 6 cables. When I started shopping for the wire I noticed a lot of complaints about wiring not being capable of carrying gigabit speeds, CCA being sold as solid copper etc. Now I'm questioning the wiring I already have, wondering if it might be the culprit for random problems. I want to find a way to test my current wiring and anything I make in the future. But as anyone with experience knows a cable certifier is thousands of dollars. Then I got to thinking if i have two computers capable of gigabit speeds shouldn't I be able to run a cable between them and verify the performance of the cable? I was hoping someone here will have the experience I lack to make this a reality. Also if it was possible to make a smaller arduino based tool that would be amazing. This seems like a tool damn near everyone could use these days.

Topic by lerch419 4 years ago  |  last reply 4 years ago


How to shorten an AC power cable?

I would like to shorten an AC power cable but want to make sure I do it the safest way possible. What is the best safe and easy method for doing this?It's a cord that looks like this:http://www.germes-online.com/direct/dbimage/50189682/American_AC_Power_Supply_Extension_Cord_Plug.jpgIt's 12' long and i only need 3'Please help!Thanks :)

Question by superjames 10 years ago  |  last reply 8 years ago


How to connect LED Strip

​Dear sir, i have purchased a 5 Meter LED strip with adaptor today in online. can u just instruct me how to connect the strip? the 12V adaptor will work for 5 Meter strip or can i use it the strip by cut in to pieces? kindly help me in this regard.

Topic by shiva_nalla 4 years ago  |  last reply 4 years ago


Serial to USB cable?

I have a serial cable for my Garmin Etrex, one side a serial plug the other goes to my GPSR. I am about to get rid of my desktop and only use my laptops but I don't have a serial port on either. Knowing this the serial cable is useless unless I spend another $40 - $50 on a "Serial to USB Converter". So, I cut it to see what and how many wires are inside of it and found only three. I was thinking of making my own cable but I don't understand the difference between the two ports. I saw the GPS 'ible here and it's no help unless you don't have the serial cable already... Here are my questions:1. As long as I connect the proper data in, data out and ground to the USB cable shouldn't it work?2. Are serial ports and USB ports that much different?I read a lot on the pfrancs website and i noticed a few of the connectors looked like they may have had USB cables hooked to them. I've searched and searched but came up with squat! If you have a really good understanding about USB and serial ports can you please help me or direct me to someone who can? Thanks in advance!

Topic by martymunch 10 years ago  |  last reply 10 years ago


Laptop adaptor power rating interpretation Answered

Hi all. My laptop power adapter is rated as follows. -Input:100-230 ac volt, 1.6A -output: 18.5 V DC, 3.5A So what does this mean and how important is to follow?

Question by SangpoSangpo 3 months ago  |  last reply 3 months ago


How can I rig a cabled pulley system for a homemade weight machine?

That gives both variable resistance through range of motion (lighter at start, full weight at end) AND force multiplying where e.g. 20 lbs becomes 80 lbs (added weight effect with less plates).

Question by vwchest 9 years ago  |  last reply 9 years ago


Does anyone know hows to repair a thin cable?

Hi, I have worked on an old version of robot Nao, and recently discovered that a thin cable (see picture) from its shoulder is broken, the thin cable is very tiny, slim and can be quite fragile. I understand that I have to send it back to Aldebaran to repair, but it really costs a lot and it takes time too. Can I ask if there is anyone out there who is specialized in repairing this kind of cable? I appreciate much of your help. Thanks a zillion!!

Question by cassandraanabellum 7 years ago  |  last reply 7 years ago


How do you make a 3.5mm male to a rca video cable?

I have a spy gear atv 360 and i want to make a cable for it to play the video on my tv is therer a website or an instructable that tells you how to do that clearly?

Question by miky19522 8 years ago  |  last reply 8 years ago



How to make spots on string or spots on cable (or lights on string - I do not really know how to call this item) ?

Hi, Here is the kind of product found in stores : see images attached. Is there any instructable on the subject ? How is it called in english ? Thanks for any answer :-) Jean

Question by jpghiena 9 years ago  |  last reply 9 years ago


USB cable with On/off Switch

Anyone know how to make USB cable with On/off Switch, not just to off the power, but to completely switch off the data flowing on a usb cable.  Thanks!

Topic by dimension_55 9 years ago  |  last reply 9 years ago


Volts from an USB cable

I need to know how many volts a usb cable provides from a laptop. I couldnt find any information on google and I know that someone here has to know.

Topic by allstarn07 11 years ago  |  last reply 11 years ago


how to get wireless connections with my cable modem?

I just set up phone,internet and tv with comcast through a cable connection. when i had dsl i could play my ps3 and psp or hook my laptop to my conection with wireless. since i have had this new service i cant get my other systems to recognize any connections. what do i need to do so that i can get wireless throughout my house as i did before?

Question by robinreise 9 years ago  |  last reply 9 years ago


how do you hookup a cable descrambler chip to vcr?

Question by brains.tt 9 years ago  |  last reply 9 years ago


Soldering a TRS to TRS cable?

I am trying to make a transfer cable for my TI-84 Plus Silver Edition Calculator. It came with a USB-mini to USB-mini cable, but it has two ports on top. One for a USB-mini cable, and one for an I/O cable, with 3/32 TRS jacks (2.5mm) from Radio Shack. I am wondering how to connect two TRS jacks together to make a transfer cable. I don't know what kind of wire to use, or how the wires should be connected.

Question by Pettrocity 6 years ago  |  last reply 6 years ago


How to remove the copper layer/film from a PCB ???

Hi ... do you know, how to remove the copper layer from a PCB - by not using any ETCHING METHOD. Just to separate the cooper from plastic/f.glass ??? Do you think, that HEAT would do the trick ??? Like when you hold soldering tip to long on a pcb, it can happen that the cooper film become loose from the PCB. Thank you in advance. Zholy P.S. : The reason, why I asked = I was thinking of creating/extending a "ribbon cable" : 1. remove the copper film 2. stick it to the foil, that you can laminate 3. put the "ribbon cable pattern" on the film and ETCH it. 4. laminate it ... and cut the just the top of the laminate foil at the ends, so you have clear cooper for the contacts, but the bottom laminate film as a support.

Question by zholy 9 years ago  |  last reply 9 years ago


Does anyone know how to build this funny-looking USB drive?

Is there an existing instructable teaching how to do something like this:It's a usb drive, but looks like a broken USB cable. I saw that on eBay. :)Help! Thanks :D

Topic by erikboi 9 years ago  |  last reply 9 years ago


How does cable TV and the internet come through a single coax cable? Answered

There is more to it than just that. I see about 30 apartments jumped, for an emergency fix, about 300 feet. Granted the picture quality is poor but it works fine.  I do not have the same cable as my neighbor and the internet can be shut on/off over the phone. How is all this possible?

Question by onrust 8 years ago  |  last reply 8 years ago


How can I make a filter in the audiocable between my laptop and car stereo to avoid the noise I now get.? Answered

When I connect my laptop to my car stereo  I get a lot of noise. I suspect there is some kind of loop between the laptop power supply and the amplifier. I think I can solve the problem by using a filter in the audio cable to separate the two, perhaps by means of a transformer. Does anyone have a good circuit design for this?

Question by ardnaz 9 years ago  |  last reply 9 years ago


RCA cable power loss

Hi hi, Im splitting RCA cables coming from my cable box. I split the sound 3 times now. 1 to TV, 1 to stereo, 1 house system. Im wanting to add a 4th for daughters Karaoke. Easy enough with more splitters. How many times can I split a audio RCA signal before I start loosing too much to play correctly? Thanks in advance. Bman

Topic by fish2find 11 years ago  |  last reply 11 years ago


Multi Console Av Cables

SOOOOO i've got way to many gaming consoles.. i collect them  i love them all DEARLY but i hate the fact i've got 20million sets of AV cables for each one. SO i went to gamestop and bought a multi console av cable.. covers my xbox (original), xbox 360, playstation 2, and gamecube/nintendo. so i plugged all my consoles in and fired on up.. and to my surprise i had no audio.. so i checked the av's on the tv side and moved htem and after much arguing with it all unplugged all but my xbox.. magically SOUND. so while the xbox was playing a movie i plugged in another console and bam sound was gone.. so my THEORY is this 1) Single Console it Works fine but i still have to switch the cables around every time i want to use another console 2) more than one console plugged in the audio from L & R is being diverted from the tv to the new console plugged in. but i am unsure how to test this.. and even more unsure if my theory is correct how to fix it. i bought the cable for next to nothing and am not above hacking it apart to get the results i want.

Topic by jgosselin 7 years ago  |  last reply 7 years ago


how to disable a snes controller

Hi iam making a snes arcade machine and i want to add a coin operate timer , i dont want to turn off the tv or console after time is over, i only want to disable/lock the controller, so i see that the brown cable is ground and white is power, if i unplug any of this cable the controller wont work so i connected the brown cable to a negative ac 5v  charger or the white cable to the positive cable but the controller dont work this way, so i hope someone can help me with this.thanks

Topic by locoface 4 years ago  |  last reply 4 years ago


How do I splice cables together?

How do I splice cables together?

Question by Zem 10 years ago  |  last reply 10 years ago


Does anyone know how to splice a usb cable and bend the connector?

I really like how Flip Video Cameras have built in usb connectors, and i really want to try to integrate something similar into my phone which has a micro usb port so i can charge it and drop off files whenever i'm around a computer. I was thinking the best way would be to strip the usb cable and bend it right at the connector, then splice the cable so it isn't too bulky. has anyone done something like this before?

Question by gottaseegottaknow 8 years ago  |  last reply 8 years ago