jamieoliver22
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Re: PS/2 Keyboard?

Tue Apr 17, 2012 9:21 am

Just a quick question.

Would an adapter like this work ok on my Raspberry Pi? Has anyone else used such a thing?

http://www.amazon.co.uk/Replac.....038;sr=8-3

Or would something like this be better? (note I already have a USB mouse, so only the keyboard needs converting).

http://www.amazon.co.uk/Belkin.....B0006BA2SI

I just want to make sure in case it damages it at all.

Thanks,

Jamie

kage93
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Re: PS/2 Keyboard?

Tue Apr 17, 2012 9:46 am

I just tried one of these with a PS/2 keyboard. A cheaper trust one, and a more expensive one from my desktop. Neither work so i"m assuming the adapters just don"t work. Hope this helps.

I tried the adapter from the first link, not the second one. But I also assume that one won't work too.

Manjot

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RaTTuS
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Re: PS/2 Keyboard?

Tue Apr 17, 2012 9:53 am

the 1st one may work - though it may need to go though a powered hub.
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ghans
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Re: PS/2 Keyboard?

Tue Apr 17, 2012 9:55 am

The second one is a active one.
Always use active ones , the dirver should be im the kernel.

The first one relies on the Keyboard already having USB logic in it.

Thats how those USB Mouses with green adapters work , also.

ghans
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Montala
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Re: PS/2 Keyboard?

Tue Apr 17, 2012 10:12 am

If you want a cheaper version of the second one, then have a look at: http://www.amazon.co.uk/NEWLin.....rs_title_0 it is only £1.26 with free delivery as well, which can't be bad, and it might even work OK!

JollyRoger
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Re: PS/2 Keyboard?

Tue Apr 17, 2012 5:08 pm

I bought that cheap adaptor 2 years ago. I didn't work properly (there was internal connection), and I ended up buying a more expensive version, which has worked well ever since.

JollyRoger
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Re: PS/2 Keyboard?

Tue Apr 17, 2012 5:10 pm

JollyRoger said:


I bought that cheap adaptor 2 years ago. I didn't work properly (there was internal connection), and I ended up buying a more expensive version, which has worked well ever since.



Sorry - I meant "a faulty internal connection".

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mahjongg
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Re: PS/2 Keyboard?

Tue Apr 17, 2012 5:12 pm

Cheap adapters just route some of the PS/2 pins to USB pins, and the whole keyboard/mouse/serial I/O is done in the PS/2 device, so actually the device is both PS/2 & USB compatible, with automatic detection of whether the device is connected to an USB or an PS/2 port.

Expensive ones really contain a USB chip that does the USB to serial conversion.

dawilson123
Posts: 39
Joined: Sat Mar 03, 2012 2:00 am

Re: PS/2 Keyboard?

Tue Apr 17, 2012 10:34 pm

I hope it works. I managed to get the belkin PS/2 to USB adapter (in fact it was a job lot of three of them) which was linked in the first post for about £5 delivered on eBay.

A quick Google search has confirmed that others have had problems with USB to PS/2 adapters in the past:

Debian (in 2009): http://lists.debian.org/debian.....00868.html

Fedora (in 2008): https://bugzilla.redhat.com/show_bug.cgi?id=463391

dawilson123
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Re: PS/2 Keyboard?

Tue Apr 17, 2012 11:05 pm

Following on from my previous post, it would appear that the Belkin adapter has the chip inside to convert from the signal from USB to serial as mentioned in this review:

http://www.dabs.com/products/b.....-3BB3.html

The adapter should present itself as a standard HID like any other USB mouse and keyboard:

http://elinux.org/RaspberryPiB.....eripherals

Also Liz implied in her post in this thread that PS/2 to USB adapters should work:

http://www.raspberrypi.org/for.....er-support

Fingers crossed!

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