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salax54 · 10 November 2011, 00:25

Seeing as keyboards are an interesting topic, here's one of my hacks..
This is the interface pcb of a Micronik Infinitiv keyboard

This is the rear of a CDTV keyboard (Mitsumi build)

And some closeups

This is the rear of an A1200 keyboard

I always wanted to make the CDTV keyboard usable as a PS/2 unit. So i thought of combining the A1200 keyboard, CDTV casing, and Micronik pcb.
The A1200 keyboard fits in the casing, meaning that the keys actually fall into place nicely. However, there's a few plastic tabs that prevent the keyboard from "sitting in" properly.

This is where the obstacles are

So, they need cutting, and presto!

Now, the interface is another obstacle itself. The pcb has to be put a bit remote from the ribbon cable, or else the casing's upper and lower halves won't snap. To do this, i decided to unsolder the ribbon socket from the pcb..

And extend the socket using some cables.

This is the whole thing connected

I can now place it just about any where under the keyboard chassis.
Here's the finished job.

A1200 in, CDTV out!

And after testing, it proves working!

This is not targeted towards a regular pc usage, but rather to hook up to my Walker replica. I could always use a Keyrah in there and make it USB, but i prefer the PS/2 that pretty much matches the Walker's keyboard socket.

10 November 2011, 00:25	#55
salax54 Registered User Join Date: Jun 2008 Location: Athens Greece Posts: 153	Seeing as keyboards are an interesting topic, here's one of my hacks.. This is the interface pcb of a Micronik Infinitiv keyboard This is the rear of a CDTV keyboard (Mitsumi build) And some closeups This is the rear of an A1200 keyboard I always wanted to make the CDTV keyboard usable as a PS/2 unit. So i thought of combining the A1200 keyboard, CDTV casing, and Micronik pcb. The A1200 keyboard fits in the casing, meaning that the keys actually fall into place nicely. However, there's a few plastic tabs that prevent the keyboard from "sitting in" properly. This is where the obstacles are So, they need cutting, and presto! Now, the interface is another obstacle itself. The pcb has to be put a bit remote from the ribbon cable, or else the casing's upper and lower halves won't snap. To do this, i decided to unsolder the ribbon socket from the pcb.. And extend the socket using some cables. This is the whole thing connected I can now place it just about any where under the keyboard chassis. Here's the finished job. A1200 in, CDTV out! And after testing, it proves working! This is not targeted towards a regular pc usage, but rather to hook up to my Walker replica. I could always use a Keyrah in there and make it USB, but i prefer the PS/2 that pretty much matches the Walker's keyboard socket.