Hardware & Devices

loyal ginger29-Oct-09 17:27

loyal ginger

29-Oct-09 17:27

What I don't understand is I reinstalled XP, then put SP2 and SP3 on it. Both SP2 and SP3 were downloaded from microsoft.com. After that when I plugged a flash drive to the USB port I got the message:

This USB device can perform faster if you connect it to a Hi-Speed USB 2.0 port. For a list of available ports, click here.

This message appeared in a ballon box popped up from the system tray area.

After I put the update from Microsoft on, the message no longer appears. Why the SP2 that I installed does not contain the USB 2.0 driver?

Luc Pattyn29-Oct-09 17:39

29-Oct-09 17:39

Just a hunch: maybe the updater told you you had to reboot the system and you didn't?

Smile | :)

Luc Pattyn

I only read code that is properly indented, and rendered in a non-proportional font; hint: use PRE tags in forum messages

Jörgen Andersson29-Oct-09 21:43

Jörgen Andersson

29-Oct-09 21:43

You don't need to install SP2 if you're going to install SP3. Microsoft servicepacks are incremental.
Other than that I really don't have an answer. Sorry.

dxlee30-Oct-09 5:04

dxlee

30-Oct-09 5:04

Regarding SP2 and SP3: I did install SP3 first, believing that it contains SP2. However, for some reason SP3 could not be successfully installed. The error message told me that SP2 had to be installed first (which is contrary to what I thought). That's why I installed SP2, then SP3.

I have USB2 working. I just wanted to save a copy of the driver so later if it happens again, I just need to pull out the archive to install the driver, instead of relying on a network connection and the availability of the driver somewhere in Microsoft's web site. Not a big deal. Thanks for your help.

Luc Pattyn30-Oct-09 5:36

30-Oct-09 5:36

Jörgen Andersson wrote:
You don't need to

I would call that cumulative.
incremental to me means you have to do them in sequence.

Smile | :)

Luc Pattyn

I only read code that is properly indented, and rendered in a non-proportional font; hint: use PRE tags in forum messages

Jörgen Andersson30-Oct-09 5:52

Jörgen Andersson

30-Oct-09 5:52

Of course, This is not my day, and coffee doesn't seem to help.

IS possible to activate after safe remove in USB Port

Eddy Vluggen30-Oct-09 23:15

Eddy Vluggen

30-Oct-09 23:15

loyal ginger wrote:
This USB device can perform faster if you connect it to a Hi-Speed USB 2.0 port.

That means that the driver is installed and working. USB may be optimized for quick removal (in which case Windows doesn't cache much) or optimized for performance (and then Windows will cache some, but corrupts your drive if you yank it out while reading).

Default setting is "quick removal". You're getting a hint from Windows that the current setting is not ideal. Your USB device can perform faster - just as it says in the balloon.

I are Troll Suspicious | :suss:

Moitor HDMI

cdpace29-Oct-09 2:33

cdpace

29-Oct-09 2:33

Hello guys,

I jsut recently baught a Asus 23" Monitor and its working great, but my problem is that it is currently only working with the VGA port. The wirte is connected to the VGA port on the monitor and to a DVI on the Graphics card via an adapter from VGA to DVI.

Now i wanted to connect the monitor to the graphics card via a DVI to HDMI cable and when I tried this the monitor isn't displaying any picture it just says no signal. I tried DVI-I to HDMI and DVI-D to HDMI cables and still no difference. The only difference is that when i use the DVI-I to HDMI cable the monitor said no signal found and when i used the other one the monitor didn't even display a message.

My Graphics card is BFG Nvidia 9800 GTX if that makes any difference.

Can anyone please help me with the problem your help is greatly appreciated. Thank you from adavance.

Regards,
Christian Pace

Re: Moitor HDMI

Dan Neely29-Oct-09 2:40

Dan Neely

29-Oct-09 2:40

Have you tried the button on the monitor to switch the input it's looking for a signal on? If it's looking on the VGA input you can send all the HDMI you want and it won't do a lick of good.

3x12=36
2x12=24
1x12=12
0x12=18

Re: Moitor HDMI

cdpace29-Oct-09 2:50

cdpace

29-Oct-09 2:50

Yes OFC im not that stupid. When i change it to HDMI it says no signal found.

anishkannan27-Oct-09 19:47

anishkannan

27-Oct-09 19:47

Hi...

we are used dongle in our application.. if once the dongle was safe remove .. that must be unplug and plug is manually .... i need first of all is possible to activate problematically not like unplug method... if is any command prompt, please share with me....

Thankyou

Does anyone have an app or source code (c# or c++) to control servo motors directly via the parallel port

ROVIO26-Oct-09 4:39

Re: Does anyone have an app or source code (c# or c++) to control servo motors directly via the parallel port

26-Oct-09 4:39

Please reply.
I have the source for This, but it is in Delphi 3, and too old for C# or C++
Can anyone convert/rewrite the source to C++ or C#?

modified on Thursday, October 29, 2009 2:00 AM

Indivara30-Oct-09 4:31

Indivara

30-Oct-09 4:31

Most people here could, but I doubt anyone will.

There are several articles here on parallel port control, that you may find useful:
http://www.codeproject.com/KB/cs/csppleds.aspx[^]
http://www.codeproject.com/KB/system/floppystepper.aspx[^]
http://www.codeproject.com/KB/vb/PortAccess.aspx[^] (this one's in VB)

Re: Does anyone have an app or source code (c# or c++) to control servo motors directly via the parallel port

ROVIO1-Nov-09 20:30

Re: Does anyone have an app or source code (c# or c++) to control servo motors directly via the parallel port

1-Nov-09 20:30

Thanks, but i did get the LED's working, It is just the servo app sending the pulses that has a problem, the sevos are a bit shakey and moves a little every few seconds by itself. I got the Delphy 3 source, but cannot find delphy 3 anymore, and would love to get my hands on C# or C++ code that would move the sevo's.
Please if there is anyone out there that can help i would really appreciate this. Blush | :O

Indivara2-Nov-09 22:58

Indivara

2-Nov-09 22:58

What I meant was, you could modify the code from the articles to suit your purposes. It shouldn't be hard if you know what kind of signal is required to drive the motor. I'm assuming you already have the interfacing hardware.

Re: Does anyone have an app or source code (c# or c++) to control servo motors directly via the parallel port

ROVIO2-Nov-09 23:16

Re: Does anyone have an app or source code (c# or c++) to control servo motors directly via the parallel port

2-Nov-09 23:16

Please help with this

The problem is that there are no pic or basic stamp controller, it connects directly on the parallel port with only a resistor on all 8 data pins, and i do not have any experience with PWM (Pulse Width Modulator-or someting like this) pulse code, or to be honnest not much experience with Visual Studio 2008 at all, or hardware programming.
If someone will be so kind to help me just with some code to control 2 servo motors by sending a pulse to the servo motors, and make them move, even beter if you can use a up and down left & right arrow to control them , up & down for (servo 1) & left & right for (servo 2). I will then have an idea how to add more servo's for future use.

Please guys help me with this.
I am sure there are guys out there that will be able to do this in a few minutes, without even breaking a sweat.

Thank you. Cry | :((

RTek233-Nov-09 6:52

RTek23

3-Nov-09 6:52

Unless you are using an old operating system (DOS, Win98), I believe it is next to impossible to get the kind of timing that is required for driving a servo.

A servo needs a pulse between 1 and 2 ms long, repeated every 20 ms or so. There are some servo's that are outside this timing, but that's pretty general. At 1 ms, the servo will be fully counter clockwise - left, and at 2 ms will be fully clockwise -right. The control is getting the time somewhere in the middle and being able to repeat it accurately every 20 ms or so, until you want it somewhere else.

So....the problem is the newer operating system control the hardware through an abstraction layer, such that you no longer have machine level interface (i.e. direct access to the parallel port) or the IRQ's and interrupts, and therefore cannot guarantee when things happen. LED's are one thing since if they are on 20 - 30 ms longer than desired, who cares, but with a servo, it will be jumping all over the place.

Now, if you are running an old system, that is different, and it is possible in C or assembler, if you hook the interrupts and do the pin toggling yourself, and some of that information will be available out there. Otherwise, you will need an interface chip like the PIC or ATMEL, etc. That code isn't exactly trivial but is easier than using a PC as a PIC.

Not exactly the answer you were looking for, but you should clarify your hardware platform (hint, VS-2008 indicates XP or Vista), and understand the complexities of the hardware abstraction layers put in place to protect us from ourselves.

Ken

Re: Does anyone have an app or source code (c# or c++) to control servo motors directly via the parallel port

Dan Neely3-Nov-09 7:37

Dan Neely

3-Nov-09 7:37

RTek23 wrote:
. Otherwise, you will need an interface chip like the PIC or ATMEL, etc. That code isn't exactly trivial but is easier than using a PC as a PIC.

I think you can get hard millisecond level control in some realtime linux versions, if you're really determined not to do it the smart way.

3x12=36
2x12=24
1x12=12
0x12=18

Re: Does anyone have an app or source code (c# or c++) to control servo motors directly via the parallel port

ROVIO3-Nov-09 19:04

Creating USB Harware Keys

3-Nov-09 19:04

Good day

Thank you very much for your posts.
I have managed to get my hands on a 4 servo app, i am sure it will work properly if it could be tweaked a bit, but i do not have the experience or Delphy 3. Please fillow this link to see the app that i am using.
It works fine & smooth, except for every few seconds there is a little shake. see: http://users.swing.be/philippe.jadin/servoen.htm[^] for how it was done, I am also using an app called porttalk to access the port directly in XP see here: http://www.beyondlogic.org/porttalk/porttalk.htm[^] . if anyone can help, let me know.

Thank you

dongle

J.K.Sharma26-Oct-09 2:01

J.K.Sharma

26-Oct-09 2:01

I want to develop a dongle for my software. but I dont know anything about writing code to any pendrive's boot sector or making pendrive as dongle.
I also want to get some help about how to read the data from the prepapred dongle from my software,that is i want to know how to link the dongle with my software.
The s/w I have developed is a windows application in .net with C#
please help if anyone can.
Thanks in advance.

Re: dongle

Jörgen Andersson29-Oct-09 22:05

Jörgen Andersson

29-Oct-09 22:05

I don't know how you intended to make a dongle out of a pendrive.
Very simplified, a dongle is a piece of hardware that your software sends a serialnumber to. this serialnumber is compared to a value stored in a PROM in the dongle. The result is then sent to the program which is compared with the expected result. This whole process is done with hashing and encryption/decryption in both directions so that you can't find out the stored value in any easy way.
On a pendrive you can easily copy all of the content and thereby duplicate as many "dongles" as you need.

Som Shekhar24-Oct-09 5:56

Som Shekhar

24-Oct-09 5:56

I want to learn how to create hardware keys. I have seen the software like AntiDuplicate have worked with Hasps.

I am fascinated with the idea of using Hardware keys. Earlier it used to be a serial port key and not USBs have replaced them.

Is there a way by which a normal USB key can be converted into a Hardware Key for Software Protection?

Re: Creating USB Harware Keys

Luc Pattyn25-Oct-09 12:51

Re: Creating USB Harware Keys

25-Oct-09 12:51

So far all USB memory sticks I have seen contain a manufacturer string and a unique ID within each manufacturer (each with a different syntax though). So yes you can use those as the base for some kind of hardware-based software protection. You would need a couple of WMI classes to get the information; they do work in user mode, even on Vista and presumably also Win7.

Smile | :)

Luc Pattyn

I only read code that is properly indented, and rendered in a non-proportional font; hint: use PRE tags in forum messages

Som Shekhar26-Oct-09 3:36

Som Shekhar

26-Oct-09 3:36

Thanks Luc,

That's great to know. any suggested readings for getting those unique IDs? So far, all I came across are basically for permanent disks and not for removable ones.

One more thing I want to know is whether there is a way to prevent writing to USB disk without a password may be?

Whatever solutions (making USB disk write protected) I have seen so far are based on registry and hence machine specific...

Re: Creating USB Harware Keys

Luc Pattyn26-Oct-09 3:50