What are all those wires in USB ports used for? P.S : If I wire 2 USB ports in series, the voltage will not go up, right?
Question by .Unknown. | last reply
I posed a problem regarding my TV Tuner card for which i got a very nice solution and my problem is solved. I have Two more problems. Yesterday i got a new detachable Hard disk with a capacity of 160 GB I have partitioned into two. Say D rive and H drive. Whenever i plug in my divice one of the USB port in the computer, i get a message lke this " Hi-SPEED USB Device attached to non Hi SPEED Hub. The recommendation is The USB main Storage Device will function at reduce speed. You must add a High SPEED USB Controller to the Computer to obtain maximum performance, Kindly let me know whether it is a software problem or a new hardware has to be installed.. Further when i referred to the CD i got along with the Motherboard, it says USB ports with a speed 2.01 will support if i have SP1 and above. I have already having SP2. Kindly advice me. Secondly I am not able to open D Drive. When i attempt, I get a message saying that it is not it is not accessible. How to open this d drive How can i format the the new hard disk. I have no file or folder in the new hard disk. Regards, Bala TV
Topic by balatv44 | last reply
Question by pwnag3 | last reply
I'm planning to pimp out my car, i was wondering... If i design my own subwoofer enclosure, i want to extend the port, so that the enclosure is vented right inside the car (not the trunk) if i did that, would i have to re-calculate port diameter? thanks!
Question by Sandisk1duo | last reply
(If this is in the wrong forum, please excuse me and let me know where I could put this.) Hello all, I'm in the process of getting my electronics together for doing bikepacking and could use a hint or two on how to resolve this. Looks like I'm going to have a number of USB powered items that I will be rolling with. I'm wanting to roll with a small solar panel too to help keep things powered up. What I have is; - Nexus 7 pad - Phone (not sure yet what that will be) - Cygolite (360 lumens) - Cygolite Hotshot - Various batteries, Goalzero Switch, and two of these sticks - There maybe other items I either would need in the future or I've yet to list. So one or two other units for the future. What I'm hoping I'll be able to do is roll with charging these pieces either with my solar panel, or when I stop at either a campgrounds or stop at a eating establishment. When I do stop at a eating establishment, I'm hoping I could get things charged up as quick as possible. So I don't want to waste time on a low powered USB port when my item would have taken a high powered USB port. I assume that would a port that is 5W at 2amps, yes? So what I was thinking was, I know the AC adapter for the Nexus 7 has a nice high powered USB port. So that would be one port. I'm thinking of buying another cause they are pretty lite and compact. So I would have two nice ports from AC. (Now comes the more clueless part of me!) So if I'm using some kind of splitter and splitting these two ports, it would seem that the amps get split in half........right? Is there a way to avoid this and get something small and compact that would offer me 4 high-powered ports? Also it looks like the best way to go when I'm on the road is charge up the batteries listed above with the solar panel. Then harvest what ever I can by the end of the night. Thanks for reading this and I'm open to any and all comments. If there's someone blogging about this that knows alot more than I do, please do share!
Topic by User1 | last reply
I have been intrested in optical computer for a while but found them rather expensive to build so I tried to look for cheaper ways to build some key features like the gates. The basic idea is to use solar cells that power a led. For and OR-Port you use solarcells where it is enough that one of the side gets light to make the led burn. To make and AND-port, you can put a resitor in between so that it really needs the power form both channel sot make a led burn. For a NOT-port you put an invertor in, so that when it burns it gives no signal, and wheren it does not receive light it burns this because of a battery it caries. A NOT-port is almost like a led-throwie.I do hav emore but wanted to know if this would be a good place or not, or if someones intrested in hearing on how to build a full optical computer, still basic, but almost completly optical, or if it would be better to post this on the microprocessor group at the opencourseware of the MIT ?
Topic by Floris Vermeir | last reply
Plz help me to, how can i receive signal or instruction from paralel port, how should i send current/signal to its register. what equipment should i need. actually i want to develope a system in c language to control electricity of home, doors or widows, so i need to check that if the door is open or closes. when door closed then computer should indicate me that the door is closed, and same door has opened. sir plz give me guideline. i would be very very thankfull to u. ( simply tell me how current/data/signal can be sent through parallel port, current source, equipment ets, after that i will make sensers for it my self)
Hi friends i need to using serial port switch on and of An LED. and also i want to know about how db9 connector is sending and receiving the bits or bytes. I am Electrical & Electronics Engineering Student.... I need Some Tutorial To know about the Serial port.....
Topic by uvaraj6 | last reply
Take a look at this image there is written PARALLEL and my computer lack prallel ports at the back where it should be with others
Question by Atul009 | last reply
I am using an arduino mega2560, earlier this year I have programmed the board to blink and it worked, but then after I start trying more sketches now, the board no longer shows on the serial port, both the power led and pin 13 led work(i programmed it before and it works) now I've tried it on several computers and my laptop but it still doesn't work please help
Question by JennyL10 | last reply
Question by jimmyb111 | last reply
I have interfaced a L293D directly with the lpt port of my desktop. A java code in the cpu generates an output of either +5 or 0V. There is no other connection between the parallel port and the l293d. These voltages from the lpt are inputs directly to the motor drive, and the motor rotates when the code runs. My question is: Can you perform pulse width modulation, without using a micro controller? Is there a java code that can do this?
Question by gregarious1987 | last reply
Hi my friends my teacher asked us to make ptoject with parallel port I fount this circuit in this site http://jaspreetscodezone.blogspot.com/2008/01/interfacing-relays-using-parallel-port.html and I have some questions about it now he used in the circuit a 12v relay .. while he's getting a 5v from the parallel port input pins in that case he used a 12v power supply * If the relay was a 5v relay .. I wont need to use any external power supply ? and why he is using the IC here ? also in the components there was ( ribbon wires ) are we going to use them between the circuit and the male connector ? another question is how we connect the relay to work as the bulb switch can I use the 120v bulb that we connect it to household and replace its switch with the relay ? finally what can I use to connect the parallel port to my laptop USB ? I know I've asked alot of things but please help me
Question by CSE251 | last reply
I recently had someone wipe my HD to get rid of windows 8 as I did not like it and put windows 7 on my laptop. Before that I could plug my laptop into the TV via HDMI cable but it seems after windows 7 was installed I can no longer do this. Is it possibly due to a driver missing? I have tried setting up multiple displays and that does not seem to work. Any ideas on what I can do to get this working?
Question by AnthonyH9 | last reply
Hello, yesterday, I bought a PIC16F877A Microcontroller and This programmer. I also installed PicPro USB. I am using the serial to usb cable that came with it. The programmer has a location of Port_#0001.Hub_#0009 in device manager. Now when I open PicPro USB and set it to port 1, It gives me an error saying: There appears to be a problem accessing the COM port. I cant seem to find whats wrong. [Edit] I think that It is connected to port 24 (hence its name: Prolific USB-to-Serial Comm Port (COM24) ) and the problem with PicPro USB is that it can only have 1 digit port numbers, how do I fix that? Thanks.
Question by Seifpic | last reply
So I really don't have too much experience with interfacing stuff and PCs (read: none) and I have a question. If I was to wire up about 5 phototransistors in series, all with a laser aimed at all of them, with the anode hooked up to TxD, and the cathode hooked up to RxD, and I had a program sending 500 bits to it per second, and checking for response.. will it basically be able to detect if one of the lasers are broken? Thanks!
Topic by cvxdes
I recently purchased a 16 channel light-o-rama starter kit and bought another addon box off of facebook market, anyway once the one I got online got it here I set everything up and tested it before setting it up outside and everything worked great. So I unplugged the CAT 5 cable on the first controller and second controller and set everything up outside. Once doing so I plugged everything back up and then I realized my daisychain was not working and my computer was picking up only 1 controller, I soon found out that the 2 ports were loose and so I looked at the pins and they seem fine on both, Do you have any ideas what could be going on? The led's on both controllers are steady green which is good but the ports don't seem to be working anymore which is odd. If you can help that would be awesome, Thanks!
Question by MatthewD253
Hello members I want to make port for microcontroller in verilog code I want to write verilog code for 8 bit port module port (data_in,data_out ) input[7:0] data_in; output[7:0]data_out; wire [7:0]data_out; endmodule I think its not enough tell me what I do to make port in verilog I did google but I did not find success
Question by vead
Hi, I've been playing with this: http://www.panu.it/ardupower/. It works fine when my iPhone is connected to the wifi network broadcast by the router to which the arduino (arduino ethernet shield) is connected. Is there a way of making it work across the internet, rather than just the local network? I imagine it has something to do with port forwarding, but I don't know much about it. Thanks in advance. AlexHalford.
Question by alexhalford | last reply
Is it possible, using just an Attiny 2313, to exchange data with a computer via serial -- or do I need one of those RS232 chips?Theoretically, I think I can, using the digital IOs, dispite its lack of efficiency, but there may be some problem with that...Sending is the main part that I'm not quite confident about ;-)
Topic by zachninme | last reply
Lets say I have a .HEX file that looks something like this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nd I need to send that to a USB port. What is the best way to do this? I have an little app that will let me send data to my USB port of choosing, but I have to type this thing out by hand, 2 characters at a time, hit enter, rinse and repeat, and then after its all entered, click send data. That worked fine for sending a few bytes to test some hardware to verify data sent back form the device was correct and that it was receiving the data correctly, but that won't work here, for obvious reasons. Is there some sort of free software I can download to shove .HEX files through a USB port? I am sure there are, but I can't find any, Google is not being kind to me today.
Question by Electric Spectre1 | last reply
I just realized why computer or plumbing parts are called male and female. The female one is the one you stick something into right? The male one is the one you stick into something. I'm just saying who ever named them must have a weird mind. I realized this when one of my friends made a joke, so please don't say I am perverted.
Topic by starwing123 | last reply
Can I connect a circuit streight to the USB port? There are USB driver circuits available in the market. Previously I used to connect my circuits to LPT port or RS232 port. Can I connect those circuits to USB port without any other driver circuits?
Question by artworker | last reply
My laptop only has two external USB ports. I keep a mouse plugged into one constantly, but I now need to use an external USB drive that needs more amps than one port can supply. I use a Y cable that pulls power from two ports, but I can't use my mouse at the same time. (Which is really a non-starter with the work I'm doing.) There are about 5 internal USB buses available, all of which have one port available, all drawing minimal power (fingerprint sensor, web cam, sd card reader, etc.) My wacky idea is to tie the voltage pins from one of these 'spare' ports to one of the external ports to provide the amps needed, similar to what the Y-cable is doing but keeping it internal and keeping one more USB port available. I've had this laptop apart and know that I can do the wiring, but I'm curious about how high the potential is to cause massive damage. Any pointers?
Question by Grathio | last reply
What I'm wanting to build is for my father. The idea is i give him a box with a line outm a small lcd display and four USB ports, each with a button to 'select them'. This is so i can give him 4 USB sticks with 'Classical, Jazz, Opera and World' written on them and he can choose what he wants by pushing the select button by the port, which would then channle the main porcessor to search the disk, pull it up on the screena nd then offer the normal push play or stop, next last etc... buttons I am supposing that I can use a cheap USB Flash MP3 Player to be the heart of the system which I'd like to make Main's powered, Anyone got any ideas?
Like if i have 3 switches how could i detect weather they are on of off? Keep it simple,thanks. Edit:its the 9 pin serial port
Question by ReCreate | last reply
I'm making an informational website for my Web design class using Adobe Dreamweaver. He wants it to be informational, so I figured it would be easy just to move my instructable to the site and format it a bit rather than start from scratch. I tried copying the source code, no go since the pictures aren't stored "locally" Right now I'm in the process of copying and pasting the text, but there has to be an easier way (this is a 30 step instructable) Do you know how to port an instructable to another site, while keeping all of the images and text local to a flash drive? I'd like to preserve the notes option as well. I can't use the flash insert that the site has made, because it's too small and doesn't work right for my use. Any ideas?
Topic by lukethebook333 | last reply
Does the PS2 have internet or connection capabilities? there is a LAN port on the back, i haven't tried it.
Question by Coliflower | last reply
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
Hi Is it possible to send single character data from MS Excel2000, to the Arduino monitor, which will ,via the usb send on to the Arduino device. (say turning leds on and off.) Low volume of data, 10 characters minute. That is within VBA of the Excel to send the data from Excel to appear in Arduino monitor and thru USB to Arduino Nano where it will be dealt with by other arduino sketch. I will need to know what vba to use in Excel and what code required in sketch to accept vba. Thanks CharlesHarris
Question by charlie.harris.376 | last reply
Is it possible to make a XY plotter which would be controlled by a computer serial port instead of a dedicated processor as everybody someway or the other just do that no matter what version it is
Topic by Unumunu | last reply
The controller came out of a large industrial copier machine. It uses a SLA7026M stepper motor controller. The motor that it runs is rated for 24 volts. I am unsure of the amperage.
Question by divad135 | last reply