The Sinclair QL Forum

Hi,

I am sorry to say, I forgot about this Keyboard interface project.

My computer setup is based on PS/2 keyboard and mouse, input through a PS/2 to USB adapter, into a KVM Switch with USB input.

Connected to the KVM switch are to a Linux PC, Windows PC, which use USB, a Q68 and QL+QIMSI through a PS/2 switch box.

I was wondering how to integrate a second QL into the setup, maybe a second QIMSI is a solution or try and make an this keyboard interface.

Hi,

Was this keyboard project finalised?
Anyone tried to port it to RPi?

Regards
Chris

Hi,

I have done the schematic in KiCad, just need to settle on a PCB layout, but that is trivial.

I am wondering if a USB/PS/2 keyboard can be used in parallel with the existing QL keyboard.

Derek_Stewart wrote: ↑Wed Mar 06, 2024 7:06 am I am wondering if a USB/PS/2 keyboard can be used in parallel with the existing QL keyboard.

Yes, this adapter works in parallel with the original keyboard.

xelalex wrote: ↑Wed Mar 06, 2024 7:39 am Yes, this adapter works in parallel with the original keyboard.

I thought so, so the QL could be under the desk, with a switchable keyboard, integrating into a multi computer setup with a switch box.

Saves wear on the QL Keyboard Memrane

Derek_Stewart wrote: ↑Wed Mar 06, 2024 9:36 am

xelalex wrote: ↑Wed Mar 06, 2024 7:39 am Yes, this adapter works in parallel with the original keyboard.

I thought so, so the QL could be under the desk, with a switchable keyboard, integrating into a multi computer setup with a switch box.

Saves wear on the QL Keyboard Memrane

No problem to use this adapter in a setup as described by Derek.

Stephan

Chris_68 wrote: ↑Wed Mar 06, 2024 5:49 am Hi,

Was this keyboard project finalised?
Anyone tried to port it to RPi?

Regards
Chris

you want to port it to the RPi to do what exactly?

Stephan

Maskenlos wrote: ↑Wed Mar 06, 2024 5:50 pm

Chris_68 wrote: ↑Wed Mar 06, 2024 5:49 am Hi,

Was this keyboard project finalised?
Anyone tried to port it to RPi?

Regards
Chris

you want to port it to the RPi to do what exactly?

Stephan

Hello,

Thanks,
Have a couple of RPi and they are a cheaper option.

Maskenlos wrote: ↑Thu Dec 23, 2021 9:08 pmAlso its a mystery that the QL has a 9x11 Matrix, the 8049 IPC only supports 8x8 Matrix.

The CTRL, ALT and SHIFT keys are on their own line separate from any other keys, so pressing them and two other keys does not create a ghost click on the 4th corner. This adds one line on one axis of the table and three lines on the other, giving 9 and 11. The way this was done is very clever, I think.