Can i make a USB hub out of a dead computer?

 A while back my family's computer died, so we got a new one. But alas, there aren't enough USB ports. So here's my question: Is it possible to make a four (or more) port USB hub using only the parts from a dead computer?

Question by quellek2   |  last reply

Powered USB hub that doesn't power from the PC if its available first ? Answered

Odd problem. I'm trying to find a USB hub that does NOT ennumerate when the external power isn't connected to the hub. All I've tried so far do their best to supply the connected items with what's available. I have devices attached that need more than 100mA, can't get it, and freak out. I've tried a standard hub, and cut the USB +5 from the PC, which stops the things ennumerating sure, but they don't ennumerate when you plug the power in ! I suppose I COULD put a signal relay in, or logic that would do it, but something off the shelf would be better. TIA gang

Question by steveastrouk   |  last reply

How do I turn a old powered USB 1.1 Hub into a gadget charger?

This one won't power up unless it has a signal from a host, I tried shorting the data pins together and the power pins and the data to power and ground to data but couldn't make it do anything. I don't want to chock it up as another useless gadget, help me make some use of it! Thanks guys&gals!

Question by Pander   |  last reply

how to make usb hub ?

Question by prgajera   |  last reply

Making/Modifying a USB Hub

I'm currently designing an accessory for my computer which will house 4 USB ports as a USB Hub.  The issue i've got is I need to be able to contain the whole USB Hub in an area that is only 22mm deep and 170mm wide.   I've taken a cheap USB Hub apart to see what it was like and I have run into a few issues. The main one is that the total depth of the PCB to the end of the USB Ports is 35mm, 13mm over the size I need.  The next issue is that I need room to place a screw between the USB Ports, 2 either side.  These screws have a width of 3mm and a head size of 5mm.    Putting a hole like that in the PCB would break and short the connections. Does anyone have any suggestions?

Topic by K20Evo   |  last reply

Lawn mower blade hub.

I'm trying to figure out how to get the blade hub off of the bottom end of the crankshaft on my TroyBilt - Honda powered mower. There is no set screw that I can find, and it doesn't appear to be a thread off. There is a key, but I can find nothing that suggests how to get this thing off. I need to take it off so I can change the bottom crankshaft oil seal. This is a Honda GCV160 engine. Thanks for any input.

Topic by thebilger   |  last reply

How to dismantle bicycle hub motors?

I need to open up the hub motor to repair the wires which have been ripped out of the hollow axle. I am reluctant to use force to separate the motor shell and it does not seem to want to separate after removing the allen screws. Which side is the best to remove? It is an ebikekit 500wat motor.

Question by etransport   |  last reply

Is it possible to use a ROUTER or HUB with standart batterys

Is it possible to use a ROUTER or HUB with standart batterys like this: what kind of modifications has to be done..

Question by madirfan   |  last reply

USB hubs, how do they work?

So I was looking on Instructables at diy USB hubs and noticed they all have one thing in common.  They all start with a premade USB hub, in modify the case.  Why is that?  I doing know how USB hubs work and I was wondering if someone could shine some light on the topic.  For charging things via USB, I know they can simply be hooked up in paralleland still charge, slower, but still charge.  Let's say I wanted to put multiple flash drives on one USB port in my computer.  I know that with pre-built hubs this is possible, but I don't know how to do it without buying something.  If I wanted to put, say two flash drives, on one USB port, could I simply hook them up in parallel?  Series?  Or would I need a special circuit?  If a circuit is needed, what circuit?  Any help would be greatly appreciated.

Topic by dudes   |  last reply

what will happen if you build a 4 port USB hub without the hub controller in it. (i.e. The ports are in parallel)?

I am wandering if the USB host stack can enumerate the devices connected to that peripheral

Question by angel_bry   |  last reply

5-10 USB charging hub

I have several USB devices in my house. I'm sicking tired of all of oversized chargers which take almost two spaces in my extension cord .Recently I was searching on the web 5-10 USB charging hub. There are pretty costly and even that many of them are low quality or if you try charge all devices at once it won't charge them. I found on instructable only one related topic only one topic. Unfortunately the author made his hub by disassemble bunch of USB chargers. I would like to made one from a scratch (including power supply). I would like to made my device so powerful that it could charge even 5-10 iPads. I found on the web instruction how to make USB charger recognizable by apple products (simply using rasistors). What power supply do I need to use?  Where can i find circuits schematics for such power supply for this specific power supply . How powerful transformation should be to run this?

Topic by Truerad   |  last reply

How can I make a wireless USB hub? Answered

I want a USB hub that can be used kind of like the USB mice with the micro receivers. It doesn't need to be a tiny receiver though. I want it to be able to reach through a floor to a place directly below it. I don't want it to be over $50, preferably using scrap parts and less than $10

Question by metalshiflet   |  last reply

How do I make a Headphone/Microphone hub...

Hello, I'm a tabletop gamer and I have a problem. My problem is that sometimes I play at gaming rooms and there's usually a lot of noise there. What I was wondering is, is there an easy way of making a Headphone/Microphone hub that players at the table can plug in their headsets and thus ignore most of the ambient noise from the other people around them? I have an understanding of electronics and how to work with them. I just don't have the finer knowledge of how to actually make stuff from scratch unless I follow a blueprint with listed components to use. What's needed is something the "host" (be it a Gamemaster or the one who's running the game) can plug his microphone headset into and the players at the table as well (let's say 10 players, so that's 11 headphones and 11 microphones). And the host needs to have a means to talk to just some players at various times, and each player must in turn have the ability to speak to the host as well.  I'm certain this gadget or something similar is or has been made at some point in time, kinda like the conference tools corporations use for their meetings, just a little lower tech than that, and it needs to be easily transportable. I would be grateful for any help on this matter.

Topic by hnakkabuff   |  last reply

Is it possible to power an USB Hub from the computer's PSU? Answered

Is it possible to power an USB Hub from one of the unused lines of the computer's PSU? For instance, can I use the floppy drive's 5V to power the hub directly? Edit: I have tried to hook the hub directly to a 5V line from the psu (floppy connector), the computer won't boot and the dvd and hd lights keep flashing. I got a male molex connector from a broken floppy drive and found a plug that fits on the hub's power input. I checked for short circuits and correct polarization. When I plug the hub (just the hub, nothing else on it), the computer won't boot. When I unplug the hub, it boots as usual.

Question by garakawa   |  last reply

howto take apart the r2d2 usb hub?

I own one of those cool CubeWorks R2D2 USB hubs. Now, the lights have gone out and I want to see if it is perhaps a matter of a loose wire... but I can't open the device... If anyone could explain how to do this without damaging everyone's favorite AstroMech Droid, I'd be very grateful!

Question by PengwynLOB   |  last reply

RAID Config with multiple flash-drives but no Flash-drive HUB

Is it possible to connect flash-drives without a hub and set them to a RAID config? Or should i stop being cheap and buy a hub and make them into a RAID set?

Topic by spiker   |  last reply

What can I do with a wireless mouse? Answered

I want to use parts from a wireless mouse to make a wireless usb hub. I have a wireless Logitech mouse that has a tiny usb to plug into the computer. I want to know if it possible to disassemble this and use the wireless parts for a usb hub instead.

Question by metalshiflet   |  last reply

is there a way to covert house trailer axle hub to a 5 or 6 lug hub?

I have a flat bed trailer with house trailer axles. I want convert just the hubs to today's convential type hubs.

Question by moonpie1991   |  last reply

USB hub only 1.1 compatible? Answered

Hi, After looking at this USB hub microcontroller page I saw a part where it said this "The TUSB2077A hub is a 3.3-V CMOS device that provides up to seven downstream ports in compliance with the USB version 1.1 specification"Does that mean it's only USB 1.1 compatible?

Question by thermoelectric   |  last reply

could a 24v 8" hub motor scooter wheel be run off 2 18v 4ah cordless drill batteries?

If so, how long might it roll at a fairly constant average walking speed (3mph) on one charge? example wheel: example drill battery:

Question by ambientvoid   |  last reply

Can someone look over my Schematic?

Hello All! I have recently started using Eagle, so please forgive the messy schematic as well as the lack of labeling-I am still trying to learn the ins and outs of the software. So I recently received my raspberry pi zeros after months and months of waiting and have been incredibly satisfied with the size and compatibility. However, the biggest issue is the lack of USB ports, which of course were eliminated on purpose to decrease the weight, size, power consumption, ect. I thought it might be useful to design and fabricate a usb hub shield that follows the form factor of the pi zero. I was searching for information and came across this IC that can serve as a 3-port hub, the TUSB2036. However, it only operates at the USB 1.0 spec. Upon further research, I found that the newer model of this IC is the TUSB2046. I made an attempt to design a schematic off known references as well as the data sheets to form a small hub for the pi zero. Can someone with electrical engineering or circuit design experience please let me know if this would work? I used this schematic as a reference and [attempted] to modify it to accommodate the four port USB 2.0 TUSB2046. One important note, the pin labeling on the schematic follows that of the TUSB2036, as I could not find a way to modify it...Please reference the pinouts in the data sheet for the correct labeling on the TUSB2046. Thank you for all the help! 

Question by JoeW79   |  last reply

USB devices on my PC cause 'Power surge'? Answered

I have Microsoft Windows XP sp2 running on a dell machine. Whenever I plug my camera in to get pictures off of it, the keyboard and/or mouse stop functioning and i receive an alert that says "power surge on hub port" or something similar. In order to get my keyboard and/or mouse to work again, i have to unplug my camera from the USB port and reset all ports. This just started happening today, even after I restarted. The error message in the picture below keeps coming up and closing itself in some kind of loop as I type this... Why does my camera cause other USB devices to malfunction when I plug it in the? Why does that error keep popping up every half a second? And, on top of all this, my tooth is throbbing for no apparent reason :( Help! -Nepheron

Question by nepheron   |  last reply

how do i build a wireless usb hub?

i would like to build a wireless usb hub for giggles it's cheaper to buy but i want to do it anyways can anybody help

Question by groug   |  last reply

can I use a usb hub from rockband 2 for my raspberry pi? Answered

I will be getting a raspberry pi soon and i am wondering if I can use the Rockband 2 hub for Wii for my raspberry pi

Question by nerd7473   |  last reply

How to create dc input to dc 5v, 5v, 12v (three outputs w/ diff currents)? Answered

I want to create a single power source for these three components: 1.Raspberry pi : 5v , >750mA 2. Display : 12v, 750mA needed 3. Powered USB Hub The input source should be dc max 12v...

Question by akki5230   |  last reply

Make a USB port wireless?

Hay all. I want to make a simple USB webcam to a wireless one. I heard about wireless USB adapters, but I can't find them on my local stores. So I want to make one. Is that possible?

Question by netbus   |  last reply

9V-12V from portable battery to usb hub?

I have a portable battery: I would like to run the output labeled DC9-12V (or DC16-20V) to a 5v/2.1a usb hub that I have.  I was thinking I could strip down a 12v usbhub car charger, but I wouldn't know how to manage the connector.  Has anyone done anything like this? Thanks

Question by 9zpvwz   |  last reply

Trying to construct a battery powered usb hub. Will this work??

Let me start of by saying that I suck at electronics and to tell me to build something from scratch would completely miss the point of why I am asking this :P What I want to do is use readymade components to combine into a portable usb hub. I want it to be highly customizable and powerful enough to power several usb devices at once. Such as powering several usb speakers, recharging a phone and so on for extended periods of time. And it has to be as energy efficient as possible without costing a gazillion bucks. If I was not at all worried about wasting power I would have solved it already :P Here are the parts I have picked out. 1. 12V Rechargeable Li-on Battery 9800mAH;=item41577f8596#ht_4008wt_804 2. Hobbywing UBEC-8A;=item3a65376410#ht_2324wt_785  3. Powered 7-Port Usb hub;=item4156468fe5#ht_4224wt_804 I hope someone can help me out with confirming that my setup would work. Or tell my exactly why it would not. I would greatly appreciate it :) /Nicklas

Question by AlmostNormal   |  last reply

Does 5V in a ATX PSU give 2A?

Looking for a power supply for my USB Hub, and I think I might found it. My PSU in my computer has 5V and 2A for VSB and another one with 5V and 25A. So my question is: does a Molex or floppy connector give 5V and 2A? Any power issues connecting this to my hub?

Question by BIO Wolf   |  last reply

USB wireless communication without a usb hub being used!

Is it possible to make a device which wirelessly connects my dslr camera to my laptop? without having an external power source? (ie not using a wireless usb hub) connection to camera is A/V out Digital (rhombus shape, but the two side edges have an indent.) and then the other connection is to a laptop. Connection needs to be wireless between the two and cant use an external power source. Let me know. Cheers Julian

Question by gogo419   |  last reply

Help needed to upgrade wheels on walker for all-terrain ?

I've been trying to source a rim / hub  for my e-walker project , and so far havent been succesful  in finding the exact measurments I need  7.5 " wheel / 46 mm width with 9- 10mm bearing ( SEE BELOW ) ... gs/=9i3dx1 The spacer inside the wheel based on my measurements is 2.7 mm in length and 13 mm in diameter ( outside ) Any way , it seems the best match I can find for hub , tire so far is one of those wheels used on those razor electric scooters  here  though I do not see any bore sizes for any of them, in spite of being told there are after emailing them that its up there ( you can see for yourelf if you like ) So instead, I did websearch on the model of the scooter that correlated with the sorta wheel specs that might work - like e100 razor  and found 8mm mentioned a few times , which I assumed might be the correct diameter of the axel / bore size i need. ( I have also asked on scooter forum to confirm this ) 8 mm however is too small to fit my own  knee walker mobility device , so I was wondering - to cut a long story short  - if there is any way I can enlarge the hole in the bearings that might be realtively easy i.e. without paying someone else ( assuming this could be done easily ) or having to buy a rim with a bigger bore and using some sort of hub ring to make u the difference ( perhaps a bad idea for hun motor ) Again , if any one has any suggestion they willing to share I'd be more than greateful for your ideas and badly needed advice  :) thanks once again. hele

Topic by hele   |  last reply

Can anyone help me with data transmission in serial communication through a hub? Answered

I need to write a c code, and using an Arduino uno, I should be able to transmit a short text to a recipient who is also connected to a hub. many other people are also connected to the same hub, but they should not be able to receive my text. Only the intended receiver is supposed to receive my text. As of now, I don't even know how to start the code. Is anyone out there who can help walk me through this project?

Question by laminceesay   |  last reply

How do you install a bicycle generator to your wheel to power monkeylectric bike lights?

On Monkeylectric website under (FAQ) said the monkeylectric lights can be powered from the energy of the spinning wheel by using a bicycle Hub-integrated generator.  How do you install a Huh-integrated generator to your bicycle to power the monkeylectric lights and what parts do you need?  Also is a Hub-integrated generator the same as a Hub-generator?

Question by John Naglosky IV   |  last reply

a wireless outlet hub for for lights and have it run off batteries?

Http://;_type=title&placement;_id=irs-106-t1&strategy;=PWVAV&visitor;_id=ETcpHj7RBmUN1JcQ0DTkPY&category;=&client;_guid=b409cb7b-6b6a-4e2b-8cce-a1e8ab4022be&customer;_id_enc=&config;_id=106&parent;_item_id=29417733&parent;_anchor_item_id=29417733&guid;=222c485c-8ebd-460e-ba0b-ceadaea20a75&bucket;_id=irsbucketdefault&beacon;_version=1.0.1&findingMethod;=p13n I want to mod this or buy something similar. IN the end its going to run a small micro motor which uses very little power. Ideally it would run of DC just batteries and would have a plug for a positive and negative wire while remaining wireless. Can this be done or is there a ready made solution? 

Question by scottzkee   |  last reply

What can I make with this?

At home, I've taken apart a RC car, a Samsung Galaxy Player 3.6, a keyboard, a monitor and a usb hub. I'm bored and I would like to know if I can make anything with these parts. Any ideas appreciated.

Question by metalshiflet   |  last reply

Is it possible to connect multiple usb thumb drives to be one drive?

If I had like 10 thumb drives could I connect them all as one drive somehow? I know you can create a usb hub and connect many that way, but when you connect the hub to a pc it sees many drives and not one.

Topic by Jester_boy2   |  last reply

How do I share 2 printers on a single ethernet jack that is hooked to an internal network?

Every office in my building has an ethernet jack. One room houses a HP laser printer that is currently utilizing the single jack. I'm putting a wide format color inkjet printer in the same room. I need to connect it to the internal network for others to share this printer as they do with the laser printer. There is a hub located in another part of the building that connects this intranet. To add my new printer is it a matter of plugging another hub into the existing jack and then plugging the two printers into the hub or is there another way? Thanks, Chas.

Question by    |  last reply

is there any way that i can have an aux. power supply triggered by a signal from a hub to power servos?????

I have a remote control hub that doesnt have enought juice to power all of the nessisary servos. does anyone have any way to maybe rig a solenoid or something like it to connect a power supply and a servo.

Question by garagegenius 

12v computer PC fans powered by 5V USB

Hi folks, I have a mains powered USB hub and have successfully powered some 12V, 0.08A PC fans with a USB cable. I was wondering if powering 12V fans with 5V power supply would somehow damage the USB hub over time? I was also going to power some other things from the hub and thought of getting a luster/screw terminal to group power the fans from one USB cable (saving me some USB port space to power the other things). Could you foresee any problems with this? Thanks in advance :)

Topic by horsebones   |  last reply

How do i increase the speed of an electric bike?(Motor in hub)

I know you need to increase the power going into the motor. I don't understand exactly how? I know that a different battery with higher voltage output should work, but is there any other way? If so, how and what would I need? I trust that you guys can come up with something. P.S I am aware of the potential danger of the motor if I increase too much.

Question by ClaynEva   |  last reply

Hub motorized 4 wheel drive wireless electric skateboard kit  

Landwheel drive is the newest drive system for skateboards that can be mounted under any deck. Just unscrew your rear truck and replace it with the landwheel Drive .    Specification of Landwheel Skateboard Drive:   Model Landwheel Drive( Dual Brushless in-wheel motors) Distance 20km Power 2 X 1100W Max load: 120kg Max Grade 20% Waterproof Water and dust proof (IP65) Frame Material Aluminum alloy + ABS Battery Li-Poly batteries Range 12-15km Weight 3.2kg (Include Battery) Size: 313 x 174 x 41 mm Certificate CE, FCC, RoHs, MSDS, UN38.3     Details of electric skateboard drive : 1. The Motors Two in-wheel motors Power 2* 1100w  Topspeed  35km/h Maximum Grade 20% Water and dust proof (IP65) Freewheeling when you push Exchangeable wheels 2.The Frame Solid magnesium single frame Click-in mechanism for the battery   3. The Battery Pack Range 12-15km Charge 2-4hours Weight 700g        Energy 94.08Wh    Capacity 3200mah Swappable via click-in mechanism Certified for airtravel Water and dust proof (IP54)   4. The Remote One button device Switch between 2 riding modes LED displaying state of charge Rubber coated for better grip Safety wrist strap

Topic by Hollie hua 

Electric bike generator?

I have an electric bike that has a 24 volt 450 watt motor, running on the back wheel.  would it be possible to fit a front hub motor  on the front wheel to ether help with charging the battery's while using the electric motor to run the bike or be able to power the motor when you have started to move.  If this is possible what size hub motor would I need in the front wheel and what modification would I have to make.

Question by AlanV23   |  last reply

What is a good cable/socket system for modular circuits?

I've been working on and off on an integrated color organ and vumeter over the past few months.  Part of the design is that there will be a central "hub" that will do all the filtering and user interfacing, allowing me to build the display itself separately.  The intent is that this will allow me more design freedom in a display, since I won't have to fit all the circuitry into it.  It's also cool, since this project is more self education than anything else.  The minor problem is that I have no idea what type of cable or connector to use in order to make the design modular. So, is there a good cable/socket type for this purpose?  It preferably needs at least five wires (high, low, mid, left channel, right channel), which is why I don't think USB is a possibility.  Also, will it be necessary for one of the wires to be hooked up to ground of the central hub?  My intent is for the display and hub to have different power supplies, with the filter outputs hooked up to transistors in the display, which will in turn "trigger" the leds. Forgive me if this is a glaringly obvious question; I'm entirely new to electronics, so I have no experience with cables and the like. edit: the display is going to be at least a foot from the central hub, if not more, so ribbon cables and the likes are out of the picture.

Question by Skidion   |  last reply

More volts to electric bike- safe? Answered

Got an older brushless hub motor + charger at a street sale: 36 V, 240 W. No controller. Would it be safe to increase the voltage to, lets say, 48 V, or even 60 V; or would it fry? (controller has to yet be made). I assume the power would increase to 300W or 360 W. My 12 V cordless drill has no probem dealing with 18 V, that's why I came up with this question...

Question by BobS   |  last reply

how too make usb with LED Indicator

Hello people I found long a go something that was a led that flashing on the data transfer from a usb so i can't find it now so can you help me out? i try something todo but its not working i buy a usb hub and made npn with led on it if you Base Volts up than you led goes on. now i add the base on the data line on a usb of that usb hub but there is no effect... can somebody help me?

Topic by W4tc   |  last reply