Homemade keyboard?

Question

Iron

I noticed that in CS 1.6 you can control the camera with the Page up and Page down + arrow keys.
Interested in whether there are boards or any kits for creating your own plug and play keyboard. After all, I would only arrange these keys closer and leave only the necessary ones. About parsing the keyboard, please do not write.

Answer 1

You can simply rebind the keys so that, for example, the "f" key sends a PageUp event. Programs - a ton, an example - SharpKey. Well, this is if you cannot change the config in CS 1.6 itself.

Answer 2

Google for "USB HID"