It was time to void the warranty:
In a quest to improve my keyboard I have combined the 3Dconnexion SpaceMouse Wireless with the Microsoft Sculpt Keyboard. Why? Because I can. I will call it the #3DSpaceKeyboard.
Recently I have bought the SpaceMouse and I was taking it home, to the office, to the hackerspace. What bothered me was the massive weight of the SpaceMouse. Why not embed it into the keyboard so I do not have to carry along the weight.
Let me start with breaking down the #3Dconnexion #SpaceMouse Wireless.
On the bottom below the rubber padding there are 4 holes with screws beneath. After undoing them, you can easily lift the top part. The base also holds the micro-USB connector which is attached with a 6 pins header. There you will find a Li-Ion battery pack 1100 mAh which is attached by rubber strips. After removing them you get access to the main board. Remove it and you will see the bare bones top part. That wasn’t too hard. I am afraid the warranty will be void now ;-(
The PCB is held in place by 3 screws. Sorry I did not make a picture of these screws. After removing them it is easy to unclick the PCB from the rest. The 6 pin header for the USB charge plug I desoldered and I placed a longer ribbon cable between the PCB and the connector.
Now the real fun starts. On the bottom under the five rubber you will find screws. Undo them and you can start a partial remove. The padded palm wrest can now be unclick from the bottom part. Then you get access to the screws which hold the top part of the keyboard to the bottom part. You need to gently unclick the area where the keys are. Make sure to use a soft wedge to prevent damage to the keyboard. It is now also possible to remove the screws of the battery compartment. You need to unsolder the wires first before you can completely remove the blue batteryholder.
I put my phone in a RAM mount X-Grip to stabilize it above the keyboard. Then I held the base of the SpaceMouse in place and positioned some post-its on the screen marking the location of the hole to be cut. After removing the base I could directly see where to mark the hole to be cut.
Using a Dremel and a Stanley cutting knife I have gone through all layers of the keyboard to make space for the SpaceMouse 😀 Furthermore I have used spray glue to put back the soft padding of the keyboard. In the beginning you could see the stains of the spray glue, but that disappeared when I used the hot air gun to evaporate the glue residue. Any other sticky parts of the glue you can (in my case) rub off easy.
Power for the keyboard came from a battery compartment but I removed that. I soldered the leads of connector from the keyboard to the 3.3 volt from the SpaceMouse. The battery compartment has been stripped and I milled a hole for the USB charge plug to be accessible. The magnetic lid is now back in business.
Sometimes I use my right hand to press keys on the left side of the keyboard. Now I get a reminder not to do that anymore. For the rest I do not experience the 3D Mouse interfere in normal operation of the keyboard. Another job finished completely. Maybe I should make the battery compartment a bit more clean with a holder for the usb dongle . ..