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Rewiring PS/2 to USB plug

post #1 of 15
Thread Starter 
For mounting a touchpad and internaly wiring it, I'm wanting to chop off about 2' of wire.
I then thought it would be easier to have it as a USB! So I chopped the wire and wired it to a USB
USB was :
(Ground pin): Sheath
Pin 1:Red
Pin 2:White
Pin 3:Green
Pin 4:Black

and the PS/2:
Sheath
Blue
Orange
White
Green
Which I connected as:

Sheath -> Ground pin
Blue--> Pin 1
Orange--> Pin 2
White--> Pin 3
Green--> Pin 4

I got "unrecognized device"??

Any tips/ pinout conversions?
Cheers
Thanks for any Help
Royally MIIFed
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Royally MIIFed
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post #2 of 15


Pin 1 |KBDAT (data)
Pin 2 |not used
Pin 3 |GND
Pin 4 |VCC (+5V)
Pin 5 |KBDCLK (clock)
Pin 6 |not used



Pin 1 | +5V (Red)
Pin 2 | -Data (White)
Pin 3 | +Data (Green)
Pin 4 | GND (Black)


Just remember that wire color is not necessarily the same for each device. Go with the pinout's over wire color.
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post #3 of 15
Thread Starter 
Thanks Moots, that's the exact same-same info I dredged up!

My question is: for direct comparison
USB side
Pin2 is -Data
and
Pin3 is +Data

For PS/2 side
Pin 1 is KBDAT(Data)
and
Pin 5 is KBDCLK (Clock)

Here is where I'm guessing
The KBDAT and KBDCLK pins are equivalent to the other Data pins!: ([i]+/- Data[B])
can't I just swap the two? (one way should work and the other should not)
Is that safe- or will I fry something?
Thanks
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post #4 of 15
I doubt you'll fry anything. However I don't know how to convert PS/2 to USB. I believe PS/2 is serial (only got two data lines anyways) so there isn't a problem there, but you might have to do something funky.

I know that there are PS/2 to USB male adapters out there, so my suggestion would be to look up one of those and see how it's wired.
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post #5 of 15
I am not sure you can do PS/2 to USB without a convertor. Here are some internals of such an adapter.




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post #6 of 15
even the factory converters tend to be flaky in my experience
be careful
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post #7 of 15
Check this out:

http://pinouts.ru/InputCables/usb_ps...e_pinout.shtml

According to that, the USB Data- pin goes to the PS2 Data pin and the USB Data+ pin goes to the PS2 Clock pin.

However, the pic of the adapter that DuckieHo posted has an IC in it, so it may not be that simple.

Hope that helps.
    
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post #8 of 15
Quote:
Originally Posted by madcat66 View Post
Check this out:

http://pinouts.ru/InputCables/usb_ps...e_pinout.shtml

According to that, the USB Data- pin goes to the PS2 Data pin and the USB Data+ pin goes to the PS2 Clock pin.

However, the pic of the adapter that DuckieHo posted has an IC in it, so it may not be that simple.

Hope that helps.
From that, I think USB is backwards compatible to PS/2 but not the other way around.
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post #9 of 15
Quote:
Originally Posted by DuckieHo View Post
From that, I think USB is backwards compatible to PS/2 but not the other way around.

ups. Didn't notice that he was looking for PS/2 to USB, not other way around.

That would make sense.
    
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post #10 of 15
do you need one for a keyboard or mouse?
are you doing this as a project cause you want to?
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