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Author Topic: keyboard splitter  (Read 4417 times)

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Hydro

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keyboard splitter
« on: July 13, 2002, 01:00:39 pm »
I made Han's keyboard splitter and i was not sure which IC chip to use. i ordered this one
http://www.mouser.com/index.cfm?handler=displayproduct&&lstdispproductid=545814
i think it will work but i am not sure. i also am using the 6 pin (smaller) keyboard plug. i got the wiring off of his site. i just wasnt sure if i only needed to use 4 of the 6 pins. anybody built this splitter in the past? any suggestions?
thanks for your time,
« Last Edit: December 31, 1969, 07:00:00 pm by 1026619200 »

slug54

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Re: keyboard splitter
« Reply #1 on: July 14, 2002, 06:22:58 am »
The chip should work ok, I built this circuit a couple of years ago , I used Radio $hack parts he doesn't give a lot of detail for the IC but it is cmos and should work.

as for the connector you should be using only 4 of the 6 pins on the ps2 connecter.

The circuit I built was for the standard AT keyboard not the ps2. but you still only use 4 of the pins. Make use you know which pins are which the pinouts are different for the two types pf keyboard plugs.

for example pin 4 on the AT style 5 pin plug is Ground
pin 4 on the ps2 plug is +5v

the pins on these plugs are not numbered sequentialy
make sure you know which pin is which.

                     good luck
                       Slug54

« Last Edit: December 31, 1969, 07:00:00 pm by 1026619200 »

aquatik11

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Re:keyboard splitter
« Reply #2 on: July 18, 2002, 08:54:48 pm »
i built the splitter and i cant get it to work. i took the circuit to radio shack, and i built it right, the keyboards work individually, but not together, any ideas? i have xp.