Usb male - male cable to connect 2 computer without a 'bride'
Although my flyback transformer driver appears to work very well up to 18V operation, the arc length is not satisfactory. I increased the voltage to 25V which allows 2 to 3 inch stable / hot arcs. However my 250V 18A rated MOSFETs appear to fail periodically esp. When adjusting the potentiometers (for adjustments to drive frequency and duty cycle) I Tried sticking a 1N4007 reverse biased diode across but I don't think it changed anything. I still see >300v positive voltage transients. I also tried using a neon lamp without a ballast resistor, but it did not appear to change the waveform, and glows way too brightly. I tried using 3 (really old but giant) 30V zener diodes in series but they latched up, failed, and went up in smoke lol! So clearly these HV transients have a lot of "oomph" behind them. D: I am reading an article on maxim electronics page about snubbers https://www.maximintegrated.com/en/app-notes/index.mvp/id/848 and I'll experament with some of the circuits presented there but I can't really calculate values needed for the components because I have not characterized my transformer with custom windings and a loose ferrite core. Those things will be subject to change anyways since I do not plan on supplying a specific flyback transformer with this kit. So I want something that is more universally going to work. This high voltage is just PITA to deal with. How can I reduce it to 200v without hurting performance?
Question by -max- | last reply
OK me and my friend had an idea, we both share the same wireless signal and need more storage..also I don't want to configure anything or spend any money...i have extra computers and was wondering, if i put one of my additional computers on the wireless network is there to use it as kinda a NAS of sorts..its running XP and i don't want it secured...its just pictures and music mostly???
Topic by hvac2010 | last reply
My TV has a USB port for plugging in a thumb drive to play videos and music. As do several other devices Im aware of. What I would like is a device that when plugged into my TV or such will pretend to be nothing more than a thumbdrive but actually be a wireless adapter that connects to my network and the 1TB network storage so I can access all my files at once.
Topic by darkorical
Hackerspaces have gotten pretty popular among makers across the world. They are a great place to borrow tools and share knowledge. But what about people that don't have local hackerspaces? The solution: social network. Digital hackerspaces! Great for people that don't have physical buildings, or can't afford to round one up. If you think about it, that's what instructables is! The idea is to have video chat and forums to share knowledge for projects. If you guys would voice your ideas, that would be great!
Topic by Robot Lover | last reply
I have an AT&T USB internet card, with unlimited internet usage. I want to know how to set up a wireless connection in my home using the usb as the primary internet source, from my main computer. that way family or friends can just connect to the network from their laptops instead of using my computer, or me sticking the usb into each computer as needed (the thing cost 50 bucks for insurance LOL) I would like this to work like wi-fi if possible
Question by bradburyk | last reply
The network is two PCs and a Mac sharing the same broadband modem.
I am having trouble setting up my rogers SMC8014W-G wireless internet gateway/modem. Each computer can ping the router, but most times, the computers can't ping each other. Occasionaly, I can see one of the other networked computers in My Network Places, but thats about it. The computers I am using are: 1 Vista Basic laptop-Wireless 1 Vista Premium laptop-Wireless 1 Vista Basic desktop-Wireless I also have 1 xp laptop that will occasionally be hooked up to the router using a cable. Please help me. Thanks
Question by murray484 | last reply
I am trying to create a neural network for the purpose of using it for vocal translation software which is currently completely inaccurate. There is a lack of actually code on the Internet about this and only abstract concepts. anyone wanna help me out?
Question by amelius | last reply
I've spent hours searching the internet, but not a found an answer yet. When I use the add a printer wizard, I followed the steps as shown in the pictures below. Everything is going great, until I see my network (MSHOME) with no printer underneath (last picture). The network printer does work for the 2 Mac computers in my house, but it won't even show up on the 2 Microsoft computers. I need to print from the Microsoft computer (and not the Mac) because Papakuru paper-craft files ( .pdo file) can only be opened on a Microsoft computer. I really need to print the paper-craft patterns so my little brother can make a paper-craft Daft Punk Halloween mask! My OP system is Microsoft XP, running on a Dell computer. The network printer is hooked up to a mac computer (if that matters) Please help!!!!
Question by nepheron | last reply
I tried to use the Instructables app to write an instructable. I loved it, writing an instructable as you go and clicking the camera button was great, made it really easy. BUT when I got done and went to publish it I clicked publish and it said it was uploading photos. I laid my phone down, Moto G running kitkat 4.4.2 on the counter, when I came back it said network error unable to upload. So I clicked done and tried to upload again, this time it immediately said network error couldn't upload. So I completely closed the app tried again, same. Restarted Phone, same. All the while having a strong WIFI signal. So as last resort, I cleared app cache, well, this deleted my instructable........ Those should really be stored in a separate file that is not erased by a cache clear. So what was wrong? I had a great internet signal, there was NO network problems. Webpages and instructables in the app loaded fast.
Topic by Anybodysguess | last reply
I tried enabling ICS, but I get an error message "internet connection sharing cannot be enabled. The lan connection selected as the private network is either not present, or is disconnected from the network. Please ensure that the LAN adapter is connected before enabling ICS" its windows 2000 and a regular xbox, help me ;-) please.
Question by bigb62533
My laptop catches wifi network showing excellent signal level but whenever i tried to connect it shows limited or no connectivity. what could be reason and how to connect it,is there any way to get the network ip address and to manually connect.my laptop is lenovo y510 52q.
Question by rachit59 | last reply
So if you google "Home networking" you will come up with a ton of articles about home networking "basics", well I have reached the point where basic is just not enough. I have ..... 9 or 10 computers....and I want to do something to expand my network even more (not really in size but in awsomeness), my house is wired with cat 5e and has wireless. I guess im at the medium level of networking knowledge, I dont know how to program unless its HTML but I definatley know my way around a computer. My network consists of three desktops, one attached to an LCD TV as a media center, one is just a workstation and the other soon will be in the gameroom as a media center. I also have three wireless laptops connecting to my wireless router, one operational thinclent connected to my FTP server through RDP and two networked printers. I'll attach a diagram
Question by bwpatton1 | last reply
Which cell network is better? At&t, or Verizon? Verizon just started service in our town, and they claim they own all the radio towers in the area after they purchased alltel. However, At&t has some good service too. I can get 5 bars in my bedroom. Any help? What I want you to consider: Phone selection, price of service, quality of service. Thanks!
Question by DJ Radio | last reply
I am interested in purchasing a new router because the one i have is old and does not meet my standard anymore. There is one thing i need to know and that i do not understand. On my router for the amount of computers online at once it only says 4, how do i know or how do i find a router that can support more that 4 computers!! If you were wondering i have about 8 things that continuously use wireless networking.
Topic by rickick | last reply
Hi all, I have a Optus (Network company Australia) USB wireless modem and it's been canceled now that I have WIFI.I also have a Dell Inspiron 1150 that has no wireless card. I was wondering could you use this Optus USB modem as a wireless card to pick up my home wireless signal? I can't test it because I cut the Dell's LCD cable and a new one is on the way. Cheers for any help Luther
Question by luther303 | last reply
Hello All, I am Robert i am doing phd and fro that i have to make an project of which one is gps detection. Now query is:- I have an gps device how do i connect it to net and see where my car to which i have attached the gps device is presently at and on which route is it going? Please help
Question by Robertclove
I am on the CCNA networking track at my local college, so a friend gave me a managed switch he was about to recycle so that I could play around with it and learn equipment that wasn't Cisco. He said that a few ports were bad, but other than that the switch was fine. When I power it on, the self-check light starts blinking, along with the red fault light. I assume that is because of the bad port(s). It does not output anything at all to putty... even during boot. I've tried pressing the clear button and the reset button, but nothing changes. The switch is a HP Procurve 2424M. Does anyone have a suggestion of something else I could try? Thanks!
Question by thegeekkid | last reply
Hello there, I am a network administrator and trying to create a simple device to test the alarms on our systems. Since I am not an electrician of any sort, I have an idea of what I need, but no idea of parts or names to order. Basically, I need to have a basic on/off switch with button that I can wire to a CAT5 cable. Simple enough, stops traffic at the push of a button but thats the obvious part. I also need to have some control over how long my connection times out, and after some research, I think a timer relay does that, but I can't be sure. It just needs to turn the activity back on after it goes off say between 1 second and 10 seconds off, the connection turns back on. If I can accomplish that, than I would also like to add a dimmer type device such as that of a light switch dimmer, but smaller and working with less voltage. So... Can this be done with all 3 electric devices? The closest thing I found in searching was some generic Lag Switch, but it did give me a starting idea of how to design it. I drew a simple draft of what I had in mind. Any help by some electric gooroo's would be most appreciated. Thanks! Jonathan
Topic by hannibalxlecter | last reply
Do wireless home networks lie dormant until aroused by a computer, or are they continuously broadcasting their presence? Thanks!
Question by Infinitevortex | last reply
My friend and I have Xboxs that we plan to connect via WiFi(we live next to each other). If the game such as halo has headset capability will it work or do you need Live for it to work?
Question by BADWOLF1 | last reply
I'm looking for a device that would allow me to be able to cut connections to my ISP with a hard switch (located in a network closet of my home). The switch would be one in which I can control form one of the PCs located on my home network. My current setup is a DSL modem/router to a network switch with 24 ports ran throughout my home. I have three PCs on the network, two printers, and a couple of NAS. I would like to have a switch that cuts the connection between my DSL modem and my ISP. The switch would be access from any PC on the network. The "internet kill switch" would connect to one of the ports of the network switch so that it could continue to be access from the network even when the ISP connection is disconnected. Has anyone came across anything like this.
Question by q127238 | last reply
Hi there, I'm having a huge problem connecting my desktop pc to the new wireless network at my home. I can connect via laptop and iphone but just not via my desktop that is using a wireless USB adapter. What can I do to solve this problem? What information do you need for anyone to be able to be able to help. Look forward to any help
Topic by Nzginga | last reply
I have a data aquisition device from National instruments (NI USB 6009) that connects to a laptop trough a USB cable, and i want to make the connection to the laptop wireless (or via bluetooth), but at the same time i need that the data aquisition device became portable, to install it in a bicicle and receive the data in the laptop... i've put a connection diagram on the image... need help....
Question by NunoMPG | last reply
I was hoping that SOMEONE made a telephone answering machine with a network connection so that it would do its thing like any other digital answering machine but the messages could be managed over my network. So I did a google search and it seems others have also been interested in such a thing - albeit the most recent queries being at least a year old. The answers were - "I already have that on Vonage" - sorry - don't want voip!! And various programs that would let your computer, with voice modem, do that including linux programs. Well - I don't have a full blown computer on all the time and am not likely to. And so I thought - how about a small computer - but don't have one - couldn't think of one ... And then I thought ..... Raspberry PI!!?? So small and low power that it could even be put in an old answering machine case and low power draw. Does anyone think its enough computer to do this? Anyone up to inventing one?
Topic by Ted de Castro | last reply
There is a water tank on top of this villa (about 40m up.) On the ground floor is the pump. I wanted to put a fluid level indicator in the tank that can be hooked up to a PCB. The board will then be hooked up to our internal network. At the pump will be a relay to turn it on and off, also on the network. This way the pump will turn on and off automatically.Ideally, the whole system would be web enabled and allow for logging, but that more of a "wish list" then a requirement. could I do something like this with an arduino board? I don't have much experience with them, but I'd love to learn more about them.
Question by inchman | last reply
Hello, I have a Toshiba portege m900 laptop. After a couple of years of connecting properly, it suddenly cannot connect to my home network. It just says Connections are available and displays the home network, but when I click connect, it eventually returns with "windows can't connect to ". Other wifi capable devices in the house connect normally, just as they have done before. The laptop can still connect to other networks that I have access to. When I start the troubleshooter it returns with 1) Windows cant connect to the hidden network , 2) problem with wireless adapter or access point 3) A network cable is not properly plugged and may be broken. I have been downloading large-sized files before the time I can't connect. Does it have anything to do with my sudden disconnection? Thank you for your help!
Question by lsnacion | last reply
A couple days ago I was walking around my house with my laptop in hand, catching up on some American financial news via Russia Today. Needless to say I made it to the kitchen without any mishaps and brought everything into the dining room. As I was eating breakfast, I was staring out the window at my bird feeder, with the news going, when the idea hit me. I'd seen other instructibles on digital picture frames which use computers and essentially integrate them in the house in a unobtrusive manner. Why should I have to walk around with my laptop when, theoretically, I could have a network of computer stepping stones integrated throughout my house. Is it possible to program a thin network where all the clients mirror one laptop? Is is also possible to use Johnny Lee's infrared fingers to turn on/ control a digital picture frame thin client in places where you don't want to use a touch screen? ie. the kitchen, workshop, or even in a hospital?... Could all this be done economically by re-purposing used school/uni computers, and freeware like Linux and Ubuntu and Cloud One?
Question by Skeleton Network | last reply
Hi everyone.... I like ethernet related project with Arduino and Arduino Ethernet shield. So now I want to open you a network relate problem. As you know or not Arduino Ethernet shield is made from TCPIP Hardware chip (W5100 of Wiznet Company) and other component. Recently I heard that TCPIP Hardware stack (with Hardware chip) is more stronger than S/W stack from networking attack such as flooding, spoofing and so on. But I want to know technical basis why Hardware tcpip chip is "Unattackable" from networking attack. If there is a anyone have a knowledge about networking via internet... please share your knowldege or your thinking.
Topic by iam_maker_leo | last reply
I seem to be fighting a loosing battle with my network, things just never work like they're supposed to.For example, sometimes I have to reinstall my network printer on both my laptop and my ibook to get it to print again, even when the server has been running fine sans problems for a week, it will randomly do this shit.Another example is, right now I "was" just trying to copy some music over to an external firewire drive on my server that I have shared. I had the permissions on everyone set to full access yesturday but I noticed when I restarted my server, it did not detect my drive properly until I re-seated the firewire cable :S Thusly somehow it lost my share configuration for my music folder.I set it up, but this time I left it on read only because I wasn't planning on adding any music earlier, itunes and everything was working fine when i mounted the volume. I went on there and changed the permissions back to full access just 20 minutes ago as I wanted to add some music to my drive, I right clicked in my mac os x explorer and made a new folder just to see if I could copy over now, it worked, aswell as deleting the folder.So I drag the 60mb folder of mp3 files over, and it just sat there...and sat...and sat.... until eventually giving me an error -36, upon searching about, it means "-36 ioErr I/O error (bummers)".That's straight from the horse's mouth, and that really tells me nothing, what exactly does "bummers" mean???It's frustrating for me non stop, and it does this to me with other shares in mac os x, or they will randomly disconnect for no reason, sometimes after 15 minutes or sometimes after 3 days. I will note too, I can't connect to my server now, it just says missing alias in the mac os finder. Yet I can VNC into it no problem, wowa, but just upon checking my pc just now, it can't access any shares on it either, the cursour is just spinning, however I usually have no problems with my pc's accessing it, other than the printer thing.I'm just so god damned frustrated with my set up, I've looked it up and down until I was exhausted, several times, and I know I must be missing somewhere along the way, but I just can't understand how it doesn't work like I want it to. Shares are set up, firewire is out of the question, permissions set up, mac os x can log into server, check. It's all good until I actually go to use it for something when I really need it.I'll have to restart my server now to get it to work properly again...it was fine until I vnc'd into it to change the permissions, im gonna try restarting it now and just access it from it's own screen, perhaps vnc has something to do with it.Oh and to clear up any questions before they're asked, this is how I have it configured, as quickly and detailed as I can explain it:My network starts at my ADSL +2 4 port router/modem thingy (Speedtouch 546, it has it's own connection issues on the isp's side, but they don't seem impact LAN side data flow)That then gets split off to:*Port 1: iBook G4*Port 2: 25 ft. cable to 8 port switch (I'll explain that a little further down)*Port 3: 50 ft. cable to apple airport basestation in livingroom for wifi*Port 4: My main AMD PcMy ibook is configured for DHCP with manual address 192.168.1.64The switch just makes the modem think I have like 5 computers hooked into one port lol...My airport, for a long time I thought was perfectly fine as far as usuage with my thinkpad, however, I've been noticing the last few times it's powered on, the airport connects to the thinkpad, but assigns it a 169.xxx.xxx.xx address which does not exist on my network, but if I turn the wifi off and back on, it connects fine and assigns it a dynamic ip on my 192.168.1.xxx network.Other than that, I have it in bridge mode so that it acts pretty much the same as if the laptop were wired via ethernet, vnc, filetransfers, and online games all work good albeit the wireless delay, still not bad in VNC however.My AMD machine is set up for static ip at 192.168.1.66Switch:Port 2 of my modem goes to port 8 (uplink) of my switch.*Port 1: My server (Configured for static ip at 192.168.1.65)The rest are just my B&W; g3 setup for static ip at 192.168.1.68 and an old P2 I believe is at .69 and a 1.5 amd athlon aswell setup on 192.168.1.71, all of those in no particular order except I made sure my server stays on port 1.I did have everything setup so my server was on port 2 of my modem all by itself, but I needed the switch over by my server so I moved it, however, I was still having these problems before hand, even when my server was running on a completely different motherboard!Also, maybe could someone tell me why my server won't boot unless I have a bootable disk in the drive (IE: my windows 2003 server install disk), just so it goes to "press any key to boot cd.......", of course I don't push any key, and it continues to boot into windows.However, if I dare start my server without that disc in there, it simply goes to "Invalid System Disk error, insert correct/valid disk (can't remember it word for word), and push enter"I've tried reinstalling windows server 03, and same deal, yet it's using the same hard disk for the OS that my previous motherboard used and booted from not a problem.I really apologize for the long post... but I've quite literally burnt myself out and lost all motivation with continuing to expand my computer network and so I figured I would ask for help on here for one last resort, but I know many people probably won't read it due to the long post, but I have a lot of problems I don't have answers for and I need to explain myself somewhat thoroughly or else I won't find the proper solution for the problem, now will I?
Topic by Punkguyta
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 | last reply
Question by furby | last reply
Hi i can connect and have a choice on my chromebook of the 2 networks i have on my belkin 450 router, which is the 24 and 5 bandwidth network, but on my laptop it will only show and let me connect to the 24 bandwidth and when i tell it to forget it it always comes back, it will amnually let me add the other network but it doesnt show up and when i try to get it to share it wont but the 24 network says u can chare but the 5 says cannot share. my laptop wndows 10 works fine everywhere but at my home on the 24 bwidth and also the ping is 20 and speed 4 on my 5 its 9 nad speed 45 plz help why cant i share my 5 bandwdth network and why wont my laptop give me the choice that my chromebook does of both of my networks? also the only diff is it has windows 10 and windows def virus prot! it works great everywhere else! plz help! noone seems to b able to help, not even best buy! i will glady donate a tip if someone can help! it is worth 100 bucks to me! have i turned network sharing off by accident on my router, bcause even on my chrme book the 24 wrks but it is high ping and slower speed! Connection status: Connected Hardware address: 28:C2:DD:16:93:85 Configure automatically IP address: 192.168. Subnet mask: 255.255.255.0 Gateway: 192.168.plz help
Question by LaytonR | last reply
My title is a simplified version of my problem. I accidentally clicked uninstall instead of disable on my wireless network adapter. I don't have the CD to install it. My WLAN adapter is a Cisco Linksys WUSB54GC Wireless Network Adapter version 3. I've uninstalled the device multiple times but when I reinstall it, it simply says 'The name is already in use or a service display name' and then when I go back to device manager it says the name of the adapter and then a #14 and the next time I attempt to reinstall it, it says #15 then #16 and so on. What I am doing is I'm going to device manager, updating the driver software for my adapter, then clicking 'Let me pick from a list of drivers on my computer' and then clicking 'Have Disk' and choosing the netr system information file. After that, that's when it gives me the name is already in use or a service display name error. I've reset my computer a couple times, searched bing and google a lot and got similar problems but none specific to my situation. Please help, I don't recall trying to install or uninstall in any certain order so my mess there could have corrupted something, maybe. Thanks!
Question by knexpert1700 | last reply
Hello. i have a few questions about networking, which I was hoping some of you could answer?First off, when I connect a switch to a router, how does the switch get multiple IP addresses for each thing that would like to connect to the switch if the switch is only connected to one port?That's it for now.
Question by Ruby Laser