|
2 x RJ21 ?
Well, if you don't want to untwist the pairs that far, you could always crimp or solder them. Use insulated crimps and/or heat-shrink tubing, and you can then bunch them back together. If you need to undo the connection in the future, why not use 2 of the connectors mentioned above? Label them (1-25) and (26-50).
(The only "tutorial" I could find quickly)
Wire connections: http://www.directron.com/wireconnect.html[^]
Cheers,
Sebastian
--
"If it was two men, the non-driver would have challenged the driver to simply crash through the gates. The macho image thing, you know." - Marc Clifton
|
|
|
|
|
i am 3rd-year student of university.
i ready to do project which i can do~
so i am thinking what can i make~
and i want to make USB control system.
USB control system is allowing computer to use USB that is registered by administrator.
if you want to use USB in your computer, you should input your password.
but i just have idea , and i don't know what should i do first....
My friend don't know ...
so can you please give me tip and
recommand book which i can reference?
(i can do c, c++ not winapi or MFC)
firstly, i am sorry, i am from korea.
and i am not good in wriitting english so please understand~
Thank you everyone~
|
|
|
|
|
Jung Seng Won wrote: (i can do c, c++ not winapi or MFC)
Unless you're VERY familiar with how the Windows Device Manager works, Plug'n'Play, writing device drivers, debugging in kernel mode, ... I'd suggest picking a simpler project. That "no Win API" statement you made pretty much kills any chance you thought you had of completing this project.
|
|
|
|
|
Have a look in registry setting.
regards
cocoon
|
|
|
|
|
Hi. I'm posting this here as I think my problem may be HW related.
I'm running an XP machine and I'm getting an unusual error when I try to copy large (relative, I know, but like 100+ Mb). It's an error message that seems out of ordinary.
I switch hard drives on my machine and try again - same freaky error?
Has anyone encountered? Possible troubleshooting tips you can offer?
Thanks,
Johnny
|
|
|
|
|
Is the drive FAT, FAT32 or NTFS? FAT and FAT32 have file size limitations and you may be hitting that although 100 meg files are not going to hit that limit.
Couple other things.
1. You don't have tons of system memory and your page file is corrupt/fragmented or too small.
2. You don't have enough free disk space on the drive that has your page file.
3. Your page file isn't large enough and is not set to allow for it to grow as needed.
4. The file itself may have corruption. Can you try copying it somewhere else and see if it works?
What's in the event log after you get the error during copy? What are you using to copy? Have you tried the comand line (xcopy)? Have you tried SynbackSE the free edition?
Lots and lots of possibilities here for problems and solutions.
Check out the things I mention and then reply with as much information as possible. It would be nice to know what the error is. Telling me 'freaky error' doesn't produce a lot of hits for me on google. 
Rex
|
|
|
|
|
Thanks for the suggestions. As sometimes the case, I was unable to reproduce the error (that my collegues reported.)
I copied a 300Mb video file and then a 1.5Gb video file, using the GUI's drag/drop and also Copy/Paste.
I also tried the "DOS" xcopy which was cool. I tried copying a DVD's .VOB file (since it was huge) and the Windows Explorer just gave some cryptic error message and failure number.
So then I tried xcopy and it reported problem was related to "Copy Protection", which is understandable.
Thanks for the help.
Johnny
|
|
|
|
|
john john mackey wrote: I'm getting an unusual error
WHAT IS THE ACTUAL ERROR MESSAGE!!!!!!
Otherwise [Microsoft is] toast in the long term no matter how much money they've got. They would be already if the Linux community didn't have it's head so firmly up it's own command line buffer that it looks like taking 15 years to find the desktop.
-- Matthew Faithfull
|
|
|
|
|
Yeah, I know I was sort of vague on that error message.
I'll have to get back to my system and troubleshoot again w suggested advice.
Thanks.
|
|
|
|
|
Ok.. here's the situation....
I recently purchased a
Plantronics Calisto Pro.
One of the nice features of this headset is that it can be used with VOIP services like Skype. Basically, you run a small program called PerSonoCall and it looks for incomming Skype calls. If it detects one, it enables the phone (treated as a USB audio device) and you can hear audio over the headset and speak using the mic. I want to enable the headset anytime I want so I can use it for non VOIP apps. There's no way to do this via PerSonoCall. Just as a test, I played a music file in Winamp and then ran a Skype test call to activate the headset...
Sure enough, I could hear my audio in the headset which tells me... all I need to do is figure out how PerSonoCall enables the device.
The app itself is pretty small (640k) so there can be much magic to it.
When I plug in the unit (USB) I see 3 things pop-up in my system:
USB Audio Device
HID Compliant Device
USB Human Interface Device
The HID stuff is probably related to the keypad? (not interested in getting data from that)
How should I approach this? Try to reverse engineer the PerSonoCall.exe?
Snoop the USB port to see what's being sent to the unit?
Or perhaps there's a standard API way to enabling a USB audio device?
Thanks for any insight...
|
|
|
|
|
Hi, how can verify if in my computer is installed / available a printer?
Can help me with example in C#?
Thanks a lot.
Alex
|
|
|
|
|
|
|
Hello every body
can you recommend some best HardLock and exe protector?
|
|
|
|
|
The first thing that comes to mind is that you should probably avoid the big well known exe protectors, as these tend to be the first cracked.
Ive used TeLock a few times, good compression and obscurity, but no idea on how hard it is to crack. I also tried Yoda's protector once..
I am quite interested to see what protectors other people will suggest.
What do you mean with HardLock?
//Johannes
|
|
|
|
|
I want to used (dongle)hard lock(USB or Parallel) for my application to do not copy any one;like Tiny dongle or rainbow dongle; i want the best dongle to use.
|
|
|
|
|
//Johannes
|
|
|
|
|
Dongle is a hardware device connect to computer port ; your application check dongle if dongle exist with special password and id, your application run else the application close . a dongle has memory to save atleast id and password;
you can visit Tiny Dongle to download tiny exe protector and tiny dongle softwares.
|
|
|
|
|
Hi guys, need ur help i have a circuit(ADC to BINARY) which i wish to communicate via USB port to a VB
program to read data from( Example like a USB mouse which gives input and the cursor moves)
I did some research and found out about virtual com ports which fools the program into thinking that
the usb port is a com port but i'm not sure how to create one, do i need to do it this way or is there
another way in which i could directly send data(binary) to the VB program
|
|
|
|
|
duo!@# wrote: I did some research and found out about virtual com ports which fools the program into thinking that the usb port is a com port but i'm not sure how to create one, do i need to do it this way or is there another way in which i could directly send data(binary) to the VB program
You're combining two different views of the same thing. Accessing your USB as a COM port is a user-mode view and sending data to the program is a kernel-mode view.
From the hardware's perspective, USB comms are not as simple as communication via a serial port. You can't just twiddle the signal lines and have that data auto-magically appear as input data from a COM port. As the hardware provider, you need to create a driver that exposes your USB devices as "something" and you determine whether that something is a COM port or a removable disk or a NIC.
From the using-software's perspective, you access whatever device type your hardware provider has given you.
It's not clear from your post whether you are trying to use a third-party USB device or are providing the USB device. If the former, you need to get the driver and documentation from your hardware provider that tell you how to access the device. If the latter, ... I haven't researched it but there may be some kits out there for hardware creators that provide the driver to convert your USB into a virtual COM port and specifiy what you need to do to the USB signals to use their product. Otherwise, you need to write a driver.
Judy
|
|
|
|
|
Hello there!
If you know how to read the USB device from usermode then perhaps you can just read the USB device normally and write it to a virtual bridged COM port pair. I am doing this with a modified version of the the Null-modem emulator located at:
http://com0com.sourceforge.net/[^]
I use it to create 100 virtual COM ports. You may be asking 'Why would you need 100 virtual COM ports?' and the answer is because on my project I have radar, wind sensors, gyro, VRU, DGPS,Laser fanbeam and other types of navigation hardware and they all need to communicate with multiple programs running on a single machine which required COM ports greater than was physically available!
Here are some links to some other serial port emulation drivers! All of which can be used to accomplish your goal.
http://developer.berlios.de/projects/n8vbvcomdriver/[^]
http://www.mixw.net/files/ComEmulDrv3.zip[^]
Good Luck!
-David Delaune
|
|
|
|
|
thanks guys i feel that i'm getting close to solving this problem, i made this device on my own. It's
a simple circuit which i wish to test. Using an ACD converter chip i intent to see the binary
conversion in my VB program this information is transmitted via USB this way i dont have to use a
microcontroller(c programming is troublesome). The binary conversion output pins are 8. Hmm i was so
focused on using the USB port that i didnt look at how to send the 8 pins data through USB cable which
has 4 pins (V+ D+ D- gnd).I bet theres someone out there who knows how to to it.
IN future USB interfaced devices will be the standard thats y i'm doing it this way.
|
|
|
|
|
you're going to have to multiplex your data to send it serially. V+ and gnd are power, you cna't send data over them. D+ and D- are data but carry reversed sign copies of the same data. ie if D+ is +5v D- is -5v. The higher voltage differential reduces the affect of noise on the line.
Otherwise [Microsoft is] toast in the long term no matter how much money they've got. They would be already if the Linux community didn't have it's head so firmly up it's own command line buffer that it looks like taking 15 years to find the desktop.
-- Matthew Faithfull
|
|
|
|
|
which multiplexing IC chip would u recommend I'm using ADC0804LCN. Theres also one more hurdle the VB
program how to i program the code to receive data from the USB.
Wow i didn know about the D+ D- function. I only know data travels through it
|
|
|
|
|
not a clue on the IC.
For your VB app your choices are to either make your device look like an exising device to use it's driver or to write your own. Writing drivers is really hard. You need to use C++, use the DDK (very badly documented, little tutorial info available), and write kernal mode code (will crash your OS when it errors).
If this is just a forfun project I'd strongly recomend getting a USB-RS232 dongle and implementing that (much simpler) interface.
Otherwise [Microsoft is] toast in the long term no matter how much money they've got. They would be already if the Linux community didn't have it's head so firmly up it's own command line buffer that it looks like taking 15 years to find the desktop.
-- Matthew Faithfull
|
|
|
|
General 
News 
Suggestion 
Question 
Bug 
Answer 
Joke 
Praise 
Rant 
Admin 
Submit an article or tip
